ChatGPT

AGENTS.md is a plain Markdown file of instructions for AI coding agents, a "README for agents", that Codex reads before doing any work. Codex loads a global ~/.codex/AGENTS.md and then every AGENTS.md from the repository root down to the working folder, closest last, up to 32 KiB; /init writes a first one. The open format is now stewarded by the Agentic AI Foundation.

Codex is OpenAI's coding agent: it reads a codebase, edits files, runs commands and tests, reviews pull requests and works in the cloud. As of Nov 6, 2026 it lives inside the ChatGPT desktop app, in the Codex CLI, in IDE extensions, in Codex Cloud and on mobile, and every ChatGPT plan includes some of it, Free and Go too.

The Codex app is now the Codex view of the ChatGPT desktop app for macOS, Windows and Linux, where Codex runs parallel chats, worktrees, Computer Use, Appshots, Goal mode, Record and Replay and remote control from a phone. It replaced the standalone Codex app OpenAI launched on Feb 2, 2026.

Codex CLI is OpenAI's open-source coding agent for the terminal: install it with one command, run codex in a project folder, sign in with ChatGPT or an API key, and it reads, edits and runs your code inside a sandbox. This page covers its commands, models, approval modes, config.toml, codex exec, resume and MCP as of Nov 6, 2026.

Codex Cloud runs OpenAI's coding agent on OpenAI's servers: you connect GitHub repositories, publish a cloud environment, and start tasks from ChatGPT on the web, the desktop app or a phone, each in its own workspace that keeps working while your computer sleeps. It needs ChatGPT Plus or higher; Free and Go do not include it.

Codex code review posts a GitHub review on your pull requests when you comment @codex review or turn on automatic reviews at chatgpt.com/settings/code-review; it flags only P0 and P1 issues and follows Code Review Rules in your AGENTS.md. GitLab merge requests are in beta, and Codex also reviews local changes with /review and works from Slack, Linear and a GitHub Action.

The Codex IDE extension puts OpenAI's coding agent beside your code in VS Code, Cursor, Windsurf and VS Code Insiders (Marketplace id openai.chatgpt), while Xcode and JetBrains IDEs offer Codex through their own AI assistants. It uses the same ChatGPT plan, models and config.toml as the Codex CLI and the ChatGPT desktop app.

As of Nov 6, 2026 Codex recommends four models: GPT-6 Astra (most capable), GPT-6.1 Sol (the default, near Astra at lower cost), GPT-6.1 Terra (fast, for writing and computer use) and GPT-6 Luna (most efficient). They replaced a line of coding-tuned models that ran from codex-1 in 2025 through GPT-5-Codex, GPT-5.1-Codex-Max and GPT-5.3-Codex.

Codex comes with every ChatGPT plan as of Nov 6, 2026: Free ($0) and Go ($8) get GPT-6 Luna in the desktop app, Plus ($20) gets about 15 to 160 GPT-6.1 Sol messages per five hours plus Codex Cloud, and Pro ($100, $200 or $500) has no five-hour limit. Credits extend any plan, and an API key bills by the token instead.

The Codex SDK lets programs run OpenAI's Codex agent: npm install @openai/codex-sdk for TypeScript (Node.js 18 or later) or pip install openai-codex for Python (3.10 or later). For CI there is also codex exec, the non-interactive CLI mode, and the GitHub Action openai/codex-action@v1; the App Server is the protocol for building full Codex clients.

Codex Security is OpenAI's application security agent: it builds a threat model of a repository, looks for vulnerabilities, tries to confirm them in a sandbox and proposes patches. It began as Aardvark (announced Oct 30, 2025), became Codex Security in research preview on Mar 6, 2026, and now runs as a desktop plugin, a cloud plugin, a CLI and SDK, and pull request Security Review, alongside Daybreak for approved defenders.

ChatGPT Atlas, OpenAI's AI browser, stopped working on Aug 9, 2026; ChatGPT's browsing now lives in the desktop app's built-in browser and the ChatGPT browser extension, and the AI browsers still sold are Perplexity's Comet (free), Gemini in Chrome, Edge with Copilot, Dia and Claude in Chrome.

As of Nov 6, 2026 OpenAI's GPT Image models behind ChatGPT Images hold the top five places on Arena's text-to-image leaderboard, ahead of Google's Nano Banana 2.1 in seventh, while Nano Banana is cheaper per image in the API; Midjourney is not on that leaderboard and remains the choice for its own look, and FLUX is the cheapest high-volume option.

ChatGPT and Claude cost the same $20 a month at their main paid tier, but they win at different tasks. Claude leads the public leaderboards for writing and coding as of Nov 6, 2026, while ChatGPT makes images, has the more generous free plan and offers cheaper and pricier plans that Claude lacks.

Microsoft Copilot is the better buy if you want Word, Excel and PowerPoint themselves, since Microsoft 365 Premium bundles the Office apps, 2 TB of storage for up to six people and Copilot for $19.99 a month. ChatGPT Plus costs $20 a month and is the stronger AI on its own: Microsoft does not say which models consumer Copilot uses, while ChatGPT's models rank on public leaderboards.

DeepSeek publishes its current models as open weights under the MIT license and sells a cheap API, but it stores data in China; ChatGPT's top models score higher on independent tests as of Nov 6, 2026 and offer images, voice and a training opt-out setting. For the cheapest capable API model the two are close, and OpenAI's GPT-6 Luna even undercuts DeepSeek's peak-hour price.

Google's Gemini ranks above ChatGPT on the public chat leaderboards as of Nov 6, 2026, costs about the same at $19.99 a month for Google AI Pro, makes video and comes with storage and Google app features. ChatGPT is ahead on coding agents and gives more on its free plan, and the two are close on most everyday tasks.

ChatGPT scores well above Grok on independent reasoning and coding leaderboards as of Nov 6, 2026, and lets you opt out of training. Grok, sold in The X Subscription from $8 a month with Cursor and X Premium included, makes video, which ChatGPT no longer does, and won a Tom's Guide test of everyday questions.

Perplexity is a search-first answer engine with a free AI browser, Comet, while ChatGPT is a general assistant that also searches, makes images and writes code. ChatGPT's free plan is more generous as of Nov 6, 2026, and no independent test has measured which one answers search questions better.

OpenAI Codex and Google Antigravity are both agentic coding tools with an app, an IDE side and a command line; as of Nov 6, 2026 Antigravity is free for individuals and its Google AI Pro tier runs Gemini 4 Argon and Claude Opus 5.5, while Codex runs OpenAI's GPT-6 models and adds cloud tasks and GitHub reviews; Gemini CLI moved individual users to the Antigravity CLI on Jun 18, 2026.

OpenAI Codex and Anthropic's Claude Code are both coding agents that read a repository, run commands and make changes; Claude Code leads the independent coding leaderboards as of Nov 6, 2026, while Codex is cheaper to start (it is on ChatGPT Free and Go) and runs cloud tasks and GitHub reviews from the same ChatGPT plan.

OpenAI Codex is a coding agent included with ChatGPT plans, while Cursor is an AI code editor now owned by SpaceX and sold inside The X Subscription with Grok models; as of Nov 6, 2026 Codex's GPT-6 models score far higher on independent leaderboards, while Cursor offers a full editor and other makers' models at API prices.

OpenAI Codex is a coding agent included with ChatGPT plans, while GitHub Copilot is GitHub's assistant with completions, a coding agent and models from several makers, from $10 a month; as of Nov 6, 2026 Copilot is cheaper and lives where code is hosted, and its Pro+ plan can even run Codex as an agent, while Codex gives more agent use per dollar with OpenAI's own models.

The OpenAI API and Anthropic's Claude API charge the same for their top models ($10 input, $50 output per 1M tokens for GPT-6 Astra and Claude Fable 5.1) and their cheapest ($0.10 and $0.50 for GPT-6 Luna and Claude Haiku 5.5), as of Nov 6, 2026. Claude leads the dated coding and text leaderboards and charges no long-context premium; OpenAI is the only one of the two with image, speech and realtime voice models.

OpenAI's Sora app and website shut down on Apr 26, 2026 and its API on Sep 24, 2026, so the choice for AI video is now between Google's Veo and Gemini Omni, Runway, Kling, Seedance, Grok Imagine and others; on Arena's text-to-video leaderboard of Nov 5, 2026 Google's Gemini Omni leads, and Sora 2 Pro had ranked just above Veo 3.1.

ChatGPT is not the best choice for every task as of Nov 6, 2026. Claude leads for writing and coding, Gemini for blind-vote answer quality and video, Microsoft 365 Premium for Office, Perplexity for a free AI browser and DeepSeek for open weights, while ChatGPT stays the better pick for a free plan, images, voice and reasoning against most rivals.

The OpenAI Agents SDK is an open-source library for Python (openai-agents) and TypeScript (@openai/agents) that runs agents with tools, handoffs and tracing inside your own app. OpenAI also offers the hosted Agents API (beta since Sep 10, 2026) and ChatKit, while Agent Builder shuts down Nov 30, 2026.

OpenAI API rate limits depend on your usage tier (Free, Build, Launch or Grow), which rises automatically as total credit purchases reach $5, $100 and $500. On the Build tier GPT-6 Astra allows 5,000 requests and 1,000,000 tokens a minute, and going over returns HTTP 429.

The Apps SDK was OpenAI's 2025 toolkit for building apps inside ChatGPT on the Model Context Protocol (MCP). Since Jul 9, 2026 apps live inside plugins, and the Apps SDK documentation now opens OpenAI's Plugins docs, where you build an MCP server, optional UI and skills and submit them to the ChatGPT Directory.

The OpenAI Batch API runs up to 50,000 requests from one file within 24 hours at 50% off the normal price. Flex processing gives the same discount on ordinary calls that can be slow, Fast mode costs double for quicker answers, and prompt caching cuts the price of repeated prompt prefixes.

OpenAI is winding down fine-tuning: the platform is closed to new users, new job creation was restricted on Jul 2, 2026, and existing customers lose job creation on Jan 6, 2027. Fine-tuned models keep serving until their base models are retired, and no GPT-6 model can be fine-tuned.

The OpenAI API lets programs call OpenAI's models (GPT-6 Astra, GPT-6.1 Sol, GPT-6.1 Terra, GPT-6 Luna, image, voice and transcription models) with an API key, billed per token. New projects use the Responses API through the official SDKs, with documentation at developers.openai.com.

OpenAI API prices are per 1M tokens: GPT-6 Astra costs $10 input and $50 output, GPT-6.1 Sol $2 and $10, GPT-6.1 Terra $1 and $5, and GPT-6 Luna $0.10 and $0.50, as of Nov 6, 2026. Batch and Flex halve those prices, Fast doubles them.

The OpenAI Realtime API streams speech in and speech out with low latency over WebRTC or WebSocket, using models such as gpt-realtime-2.1 and the full-duplex GPT-Live 1 ($0.05 a minute), as of Nov 6, 2026. It also handles live transcription and speech-to-speech translation.

The Responses API is OpenAI's recommended endpoint for new projects, combining model calls, built-in tools, structured outputs and conversation state in one request. Chat Completions is still supported, and the Assistants API it replaced shut down on Aug 26, 2026.

OpenAI's speech models turn audio into text and text into speech. As of Nov 6, 2026 the newest transcription model is GPT-Transcribe at about $0.0045 a minute, Whisper (whisper-1) and the GPT-4o transcribe models shut down Feb 26, 2027, and the text to speech models shut down Jan 6, 2027.

Secure a ChatGPT account in Settings > Security: turn on multi-factor authentication or passkeys, review active sessions and security history, and for the strongest protection enroll in Advanced Account Security, which requires passkeys or security keys plus recovery keys.

Agent mode (ChatGPT agent) lets ChatGPT do tasks on the web in its own virtual browser, such as filling forms or booking, asking before important steps. It launched on Jul 17, 2025, replacing Operator; it is for paid plans, with 40 tasks a month on Plus and 400 on Pro, and longer agentic work now also runs in ChatGPT Work.

ChatGPT keeps every saved chat in the sidebar until you delete it; Search (Ctrl+K or Cmd+K on the web) finds chats, projects, images and documents, archived chats stay searchable, and deleted chats are erased within 30 days.

The ChatGPT browser extension for Chrome, Edge, Brave, Opera and Vivaldi lets the ChatGPT desktop app read and act in your own browser, mention open tabs in a chat, and, in every browser but Opera, open a side chat next to a page; it needs the desktop app and replaced the retired Atlas browser.

The ChatGPT desktop app for macOS and Windows, with Linux in public preview, holds Chat, Work and Codex in one window. It is a free download from chatgpt.com/download for every plan, Free included.

ChatGPT works inside Excel, Google Sheets, PowerPoint and Word as a sidebar add-in that builds and edits files in place; it is on every plan including Free, with limited use on Free and Go, while Plus and Pro draw on the same agentic allowance as Codex.

ChatGPT also answers outside its own app: on WhatsApp and by phone at 1-800-CHATGPT (+1-800-242-8478), on Kakao in South Korea and Viber, in Apple CarPlay, Slack, Apple Messages on the Mac and the Office add-ins.

The ChatGPT app is free on the App Store for iPhone (iOS 18.0 or later) and on Google Play for Android, made by OpenAI. It adds voice, the camera, document scanning, Lock Screen voice and Codex Remote to what ChatGPT does on the web.

ChatGPT search looks up the web and answers with linked sources, on every plan and even without signing in. It launched on Oct 31, 2024 after the SearchGPT prototype; ChatGPT searches on its own when a question needs it, or you choose Search from the tools menu.

ChatGPT Sites builds and hosts a working website from a chat in ChatGPT Work or Codex, with its own address, a database of up to 10 GB and custom domains; it is on Plus, Pro, Business and Enterprise but not Free or Go, and building counts toward Codex usage.

ChatGPT Space, launched Sep 29, 2026, holds Pages (shared documents ChatGPT writes and edits with you), Slides (presentations, since Oct 16, 2026) and your files, replacing Library for the Pro, Business and Enterprise accounts that have it.

ChatGPT Work is the agent mode of ChatGPT for longer tasks: it researches, works across connected apps and files, and delivers finished documents, spreadsheets, presentations, reports and Sites. It launched on Jul 9, 2026 and shares its usage allowance with Codex.

Custom GPTs, launched Nov 6, 2023 with the GPT Store following on Jan 10, 2024, retire across ChatGPT on Dec 11, 2026 (Feb 11, 2027 for FedRAMP and approved Enterprise deferrals). Owners can move each GPT into a plugin with Migrate to plugin; old conversations stay readable.

Custom instructions tell ChatGPT about you and how to answer, up to 1,500 characters on Free and Go and 5,000 on paid plans since Jul 15, 2026. Personality presets such as Friendly, Efficient and Candid set ChatGPT's tone; both live in Settings > Personalization.

ChatGPT analyzes uploaded spreadsheets, CSV files and PDFs by writing and running Python, then answers with tables and charts; it began as Code Interpreter in July 2023, is limited on Free and fuller on paid plans, and draws interactive bar, line, pie and scatter charts.

Deep research is ChatGPT's tool for long, multi-step research: it proposes an editable plan, searches the web and your connected apps, and returns a cited report you can download as Markdown, Word or PDF. Every plan has it, with Free and Go limited; type /Deepresearch or pick it from the + menu.

A dot is ChatGPT's always-on agent, launched Sep 29, 2026 on GPT-6 Astra, with its own cloud computer that keeps working between chats; it is for Pro users 18 and over outside the EEA, Switzerland and the UK, Business Premium, and Enterprise, Edu and Healthcare workspaces, and US Pro users can text it.

ChatGPT accepts up to 20 files per message on the web, documents up to 512 MB each, and up to 80 files every 3 hours, while Free accounts get 3 uploads a day; everything uploaded is kept in Library, which holds 500 MB on Free up to 100 GB on Pro.

Finances in ChatGPT links US bank and investment accounts through Plaid, and a credit report through Experian, so ChatGPT can explain spending, bills, net worth and your credit score; it is on every personal plan in the US since Oct 2, 2026, and it cannot move money, pay bills or trade.

Health in ChatGPT connects your medical records, Apple Health and apps such as One Medical and Function Health so ChatGPT can explain results and track changes; it is free for logged-in adults in the US on the Free, Go, Plus and Pro plans, on the web and iOS, and its health data is never used to train models or target ads.

Intelligent UI, launched with GPT-6 in ChatGPT on Oct 7, 2026, lets answers in the Chat tab include charts, maps, forms, buttons, calculators and small games you can use in place; it is on every plan, from Instant to Extra High reasoning, but not in the Pro reasoning option.

Locked chats, new in ChatGPT on Oct 20, 2026, hide chosen conversations from your history and search behind a 4-digit account PIN or Face ID, on every plan from Free to Enterprise; resetting the PIN deletes them.

ChatGPT memory lets ChatGPT remember your preferences and details from past chats, saved memories and other sources. You can view, edit or delete what it remembers, or turn it off, in Settings > Personalization > Memory.

ChatGPT is for ages 13 and up, with a parent's permission under 18; parents link a teen's account in Settings > Parental controls to set quiet hours, turn off voice, images or memory, and get safety alerts, without seeing the teen's chats.

Plugins are ChatGPT's 2026 name for apps and connectors: packages that connect ChatGPT to services such as Gmail, Google Drive, Slack or iCloud and bundle skills for a task. You find them under Plugins in the sidebar or at chatgpt.com/plugins, on every plan.

ChatGPT trains on Free, Go, Plus and Pro chats by default unless you turn off Improve the model for everyone in Settings > Data controls; Business, Enterprise and Edu content is not used for training by default, and you can export or delete your data.

Projects in ChatGPT keep related chats, files and instructions together in one folder-like workspace. Every plan, including Free, can create unlimited projects; files per project range from 5 on Free to 40 on Pro, Business, Enterprise and Edu.

Record mode turns meetings, lectures and voice notes into a transcript and summary in the ChatGPT macOS app, for Plus, Pro, Business, Enterprise and Edu, up to 4 hours a session; since Sep 29, 2026 OpenAI points users to the newer Meetings plugin, a Mac beta for Pro and Business.

Scheduled tasks make ChatGPT run a prompt later, on a repeating schedule, while watching for a change, or when a Gmail, Slack or GitHub event happens; Free and Go can keep 3 active tasks, Plus 5, Business and Edu 10, and Pro and Enterprise 15.

To share a ChatGPT conversation, open it, select Share and copy the link; anyone with a personal-account link can read it, links never expire, and you delete them in Settings > Data controls > Shared links.

Ask ChatGPT what to buy and it shows product results with prices and links, which OpenAI says are chosen independently and are not ads; it also offers shopping research buyer's guides, virtual try-on, Favorites and restaurant bookings, while Instant Checkout, launched in 2025, is no longer described on OpenAI's help pages.

Skills in ChatGPT are reusable, shareable workflows (instructions, examples, files and code) that ChatGPT uses automatically when they help. They became generally available on Jul 9, 2026; you make one under Plugins > Skills > Create, with chat or with the editor.

Study mode makes ChatGPT teach instead of just answering, with questions, step-by-step hints, quizzes and flashcards; it is free on every ChatGPT plan on the web, iOS and Android, and is turned on by typing @study or choosing Study from the + menu.

Temporary Chat is ChatGPT's incognito mode: the chat stays out of your history, does not create memories and is not used to train OpenAI's models, though OpenAI may keep a copy for up to 30 days for safety.

ChatGPT Voice lets you talk with ChatGPT out loud. Live, powered by GPT-Live-1.1 since Oct 15, 2026, is the newest; Advanced keeps video and screen sharing on mobile; Standard is turn by turn. Plus gets 3 hours a day, Pro $100 15 hours and Pro $200 unlimited, as of Nov 6, 2026.

In the ChatGPT desktop app, Ctrl+/ (Cmd+/ on a Mac) shows every keyboard shortcut; Ctrl+N starts a new chat, Ctrl+Shift+N a temporary chat, and Ctrl+K opens the command menu. On chatgpt.com, Ctrl+K or Cmd+K opens Search. This page lists only the shortcuts OpenAI documents, as of Nov 6, 2026.

If ChatGPT is not working, first check status.openai.com to see whether OpenAI reports an outage; if it shows "fully operational", reload, start a new chat, turn off your VPN and browser extensions, or try a private window. This page lists ChatGPT's common error messages and OpenAI's fixes, as of Nov 6, 2026.

OpenAI's advice for writing ChatGPT prompts is to be clear and specific, give context, name the format and length you want, show examples, and refine over a few turns. This guide collects OpenAI's own prompting guidance for ChatGPT and for GPT-6 in the API, as of Nov 6, 2026.

ChatGPT tips and lesser-known features as of Nov 6, 2026, each in a sentence or two with a link to its full page: long-press send to pick a model once, the Think button, locked chats, temporary chats, @ mentions, Search across chats, the Library, scheduled tasks and more.

To cancel ChatGPT Plus bought on chatgpt.com, go to Settings > Billing and select Cancel under Cancel plan; if you subscribed in the iPhone app cancel through Apple, and on Android through Google Play. You keep Plus until the end of the period you paid for, and refunds are limited.

To delete one ChatGPT chat, open its ••• menu and select Delete; to delete them all, go to Settings > Data controls > Delete all chats. Memories, files and your whole account are deleted separately, and OpenAI removes deleted chats from its systems within 30 days.

To download your ChatGPT conversations, go to Settings > Data controls > Export data > Export > Confirm export; OpenAI emails a ZIP file of your chat history within up to 7 days, and the download link expires 24 hours later. Self-service export works on Free, Go, Plus and Pro, not on Business or Enterprise.

To install OpenAI's Codex CLI, run curl -fsSL https://chatgpt.com/codex/install.sh | sh on macOS or Linux, or the PowerShell installer on Windows (npm install -g @openai/codex and brew install --cask codex also work), then run codex in a project folder and sign in with ChatGPT. Steps for every system, WSL, updating, removing and fixing common problems, as of Nov 6, 2026.

Custom GPTs in ChatGPT retire on Dec 11, 2026; to keep one, open My GPTs, select Migrate to plugin, and test the new plugin. Instructions become a skill and knowledge files become reference files, but custom actions and the chosen model do not carry over.

To use ChatGPT, open chatgpt.com or the ChatGPT app, type a question in the message box and press Enter; signing in for a free account adds saved chats, memory, files and more. This beginner guide covers modes, models, files, voice, images, projects and memory as of Nov 6, 2026.

To use ChatGPT's agent, choose Work for a longer task (or select agent mode from the tools menu or type /agent in a chat), describe the goal, then answer its questions, approve important actions and take over the browser for sign-ins. Agent tasks need a paid ChatGPT plan, as of Nov 6, 2026.

ChatGPT is safe to use with care: it can state false things confidently, it trains on personal-plan chats unless you opt out, and it is not a doctor or lawyer, but it offers privacy controls, account security and parental controls.

Canvas was a ChatGPT workspace for editing writing and code beside the chat, launched in beta on Oct 3, 2024. It was removed from current models on May 28, 2026; writing blocks and interactive code blocks in the chat replaced it.

ChatGPT Atlas was OpenAI's web browser with ChatGPT built in, launched on macOS on Oct 21, 2025. OpenAI deprecated it on Jul 9, 2026 and it stopped working on Aug 9, 2026; the ChatGPT desktop app's built-in browser and the ChatGPT browser extension replaced it.

ChatGPT Pulse gave Pro users a daily set of personalized updates that ChatGPT researched overnight, from Sep 25, 2025. OpenAI announced its sunset on Jun 17, 2026, gave Pro users 14 more days, and moved proactive updates into scheduled tasks.

DALL-E was OpenAI's text-to-image model line: DALL-E (Jan 2021), DALL-E 2 (2022) and DALL-E 3 (2023, built into ChatGPT). GPT-4o image generation replaced it in ChatGPT in March 2025, the API models shut down on May 12, 2026, and the DALL-E GPT retired on Aug 30, 2026.

OpenAI's GPT models run from GPT-1 (Jun 11, 2018) through GPT-2 (1.5 billion parameters, 2019), GPT-3 (175 billion, 2020), GPT-4 (2023), GPT-4o (2024), GPT-5 (Aug 7, 2025) and the GPT-5.x updates to GPT-6 Astra (Sep 3, 2026) and its siblings.

ChatGPT group chats let several people and ChatGPT share one conversation. OpenAI piloted them on Nov 13, 2025, opened them to all logged-in Free, Go, Plus and Pro users on Nov 20, 2025, and stopped new group chats from Jul 9, 2026.

ChatGPT came out on Nov 30, 2022, as a free research preview from OpenAI built on a GPT-3.5 model. By Oct 2026 it had more than 1.2 billion weekly users, paid plans from $8 to $500 a month and the GPT-6 models.

OpenAI was founded as a nonprofit AI research company on Dec 11, 2015, added a capped-profit arm in 2019, partnered with Microsoft, released ChatGPT in 2022 and became OpenAI Group PBC under the OpenAI Foundation on Oct 28, 2025.

OpenAI is the AI company behind ChatGPT, Codex and the GPT models. Since Oct 28, 2025 it has been OpenAI Group PBC, controlled by the nonprofit OpenAI Foundation, with Microsoft holding about 27%; CEO Sam Altman leads it, and it was last valued at $852 billion.

Operator was OpenAI's browser agent, a research preview for Pro users in the US launched on Jan 23, 2025 at operator.chatgpt.com. On Jul 17, 2025 it was folded into ChatGPT as agent mode, and the Operator website is no longer accessible.

ChatGPT is OpenAI's AI assistant, and as of Nov 6, 2026 it is one app with three modes: Chat for questions, Work for longer tasks and Codex for software. It is free to use, with paid plans from $8 to $500 a month.

The latest ChatGPT update, on Nov 4, 2026, brought ChatGPT Images 2.6 with GIF creation and saved reference images. This page lists every notable ChatGPT, Codex and OpenAI API change of 2026, newest first.

OpenAI's products as of Nov 6, 2026 are ChatGPT (with its Chat and Work modes), Codex, the OpenAI API with the GPT-6 models, ChatGPT Images, voice, and the open-weight gpt-oss models. Sora, Atlas and Operator have been retired.

ChatGPT Images makes and edits images from a prompt in any chat, on every plan; the current version, Images 2.6 since Nov 4, 2026, adds looping GIFs and saved reference images. Free gets limited images, Plus and Pro get images with thinking, and Pro is unlimited within abuse guardrails.

GPT Image is OpenAI's family of image generation and editing models in the API, from gpt-image-1 (Apr 2025) to GPT-Image-2.6 Sunburst and Flare (Nov 4, 2026). The current models cost $8 per 1M image input tokens and $30 per 1M image output tokens, and power ChatGPT Images.

Sora is shut down. OpenAI's text-to-video model, previewed in February 2024 and sold from Dec 9, 2024, ended as an app and website on Apr 26, 2026 and in the API on Sep 24, 2026; OpenAI has no video product as of Nov 6, 2026.

Sora 2 was OpenAI's video and audio model, released Sep 30, 2025 with an invite-only social Sora app for iOS (Android in November 2025) and cameos of real people. The app closed on Apr 26, 2026 and the Sora 2 API on Sep 24, 2026.

As of Nov 6, 2026, ChatGPT's Chat tab runs GPT-6 (GPT-6 Sol on paid plans, a Luna model on Free and Go) with Instant, Medium, High and Extra High levels plus Pro, powered by GPT-6 Astra; ChatGPT Work and Codex offer GPT-6 Astra, GPT-6.1 Sol, GPT-6.1 Terra, GPT-6 Sol and GPT-6 Luna.

GPT-4o was OpenAI's "omni" model, launched May 13, 2024, that brought native voice and image generation to ChatGPT. It was retired from ChatGPT on Feb 13, 2026 (Apr 3, 2026 in business custom GPTs) and shuts down in the API on Jan 14, 2027.

GPT-5 is OpenAI's model generation from Aug 7, 2025 to the GPT-5.6 Sol, Terra and Luna models of July 2026, with point releases 5.1 through 5.6 in between. In ChatGPT only GPT-5.6 Sol, GPT-5.6 Sol Pro and a few smaller GPT-5 models remain as of Nov 6, 2026.

GPT-6 is OpenAI's model family of fall 2026: GPT-6 Astra (Sep 3, 2026), GPT-6 Sol and GPT-6 Luna (Sep 22), GPT-6.1 Sol (Sep 29) and GPT-6.1 Terra (Oct 26), with GPT-6 Pro on Astra. It became ChatGPT's default for everyone from Oct 7, 2026.

GPT-6 Astra is OpenAI's most capable model, released Sep 3, 2026, priced at $10 per million input tokens and $50 per million output tokens in the API, with a 1.05 million token context. In ChatGPT it powers GPT-6 Pro and is in ChatGPT Work and Codex.

GPT-6 Luna is OpenAI's cheapest and fastest GPT-6 model, released Sep 22, 2026 at $0.10 per million input tokens and $0.50 output. OpenAI's pricing page and Oct 7 release note name it as ChatGPT's model for Free and Go, though its help articles say GPT-5.6 Luna.

GPT-6.1 Sol is OpenAI's mid-priced GPT-6 model, released Sep 29, 2026 at $2 per million input tokens and $10 output, which OpenAI says nearly matches GPT-6 Astra on agentic work. In ChatGPT it is only in Work and Codex; the Chat tab uses the earlier GPT-6 Sol.

GPT-6.1 Terra is OpenAI's fast, low-cost GPT-6 model for visual reasoning, computer use and writing, released Oct 26, 2026 at $1 per million input tokens and $5 output. In ChatGPT it is in Work and Codex on Plus and higher plans, not in the Chat tab.

gpt-oss is OpenAI's family of open-weight models: gpt-oss-120b and gpt-oss-20b, released Aug 5, 2025 under the Apache 2.0 license, which run on one 80 GB GPU or a 16 GB machine. As of Nov 6, 2026 OpenAI has released no newer general open-weight model.

OpenAI's specialized models are only for approved organizations: GPT-Rosalind for life sciences (GPT-6 Rosalind since Oct 30, 2026) and the Daybreak cyber models GPT-5.6 Cyber and GPT-6-Cyber (Nov 5, 2026), both GPT-6 versions built on GPT-6 Astra. They are in ChatGPT Work, Codex and the API, not the Chat tab.

As of Nov 6, 2026, no OpenAI model leads the main independent leaderboards: GPT-6 Astra scores 57 on Artificial Analysis's index behind Gemini 4 Carbon (60) and Claude Opus 5.5 (59), ranks 2nd on LMArena WebDev and 37th on LMArena Text, while OpenAI's own tables show it ahead on many agent, math and cyber tests.

OpenAI's reasoning models, the "o" series from o1-preview (Sep 12, 2024) through o3 and o4-mini (Apr 16, 2025), think before answering. GPT-5 merged them into its main models in August 2025, and today reasoning is a level you pick in ChatGPT (Medium to Extra High) or an effort setting in the API.

Every model OpenAI removed from ChatGPT, with dates: GPT-4o, GPT-4.1, o4-mini and GPT-5 on Feb 13, 2026, GPT-5.1 on Mar 11, GPT-5.2 on Jun 12, GPT-4.5 on Jun 26, o3 on Aug 26 and GPT-5.5 on Oct 14, 2026. Models generally stay 90 days after a successor arrives.

ChatGPT shows ads to logged-in adults on the Free and Go plans in 89 countries as of Nov 6, 2026, below answers and labeled as sponsored; Plus, Pro, Business, Enterprise and Edu have no ads, and Free users can turn ads off in exchange for lower limits.

ChatGPT Business, called ChatGPT Team until Aug 29, 2025, costs $25 per user a month or $20 billed annually for a Standard seat as of Nov 6, 2026, with a $125 or $100 Premium seat, a two-seat minimum and no training on workspace data.

ChatGPT credits buy more Codex, ChatGPT Work and Office extension use after a plan's included usage runs out; as of Nov 6, 2026 they are charged per million tokens by model, last 12 months, and are separate from the API credits that come with Pro and Business.

ChatGPT Enterprise is OpenAI's plan for large organizations, sold through its sales team with no public price as of Nov 6, 2026, adding SCIM, enterprise key management, data residency, the Compliance API and flexible credit pricing to everything in Business.

ChatGPT's education offers as of Nov 6, 2026 are ChatGPT Edu for universities (priced by OpenAI's sales team), ChatGPT for Teachers free for verified US K-12 educators through June 2028, Codex for Students credits, and free plans for academic researchers; there is no ongoing student discount on Plus.

ChatGPT Go is OpenAI's low-cost plan, $8 a month in the US as of Nov 6, 2026 (₹399 in India), with more uploads, images, voice and memory than Free but the same Luna models and ads.

ChatGPT Go costs $8 a month and Plus $20 in the US as of Nov 6, 2026; Go raises Free's limits but keeps the Luna models and ads, while Plus adds GPT-6 Sol reasoning, full ChatGPT Work and Codex, and no ads.

ChatGPT costs nothing on Free, $8 a month on Go, $20 on Plus and $100, $200 or $500 on Pro in the US as of Nov 6, 2026, with Business at $20 to $25 per user a month and Enterprise and Edu priced by OpenAI's sales team.

ChatGPT Plus costs $20 a month in the US as of Nov 6, 2026 and adds GPT-6 Sol reasoning in Chat, limited GPT-6 Astra in Work and Codex, larger limits, ChatGPT Work on every device and no ads.

ChatGPT Plus is $20 a month and Pro starts at $100 as of Nov 6, 2026; Pro adds GPT-6 Pro reasoning, Dots, Space, no five-hour limit in Work and Codex and API credits, which matter mainly to heavy Codex and Work users.

ChatGPT Pro comes in three tiers as of Nov 6, 2026, Pro 100, Pro 200 and Pro 500 at $100, $200 and $500 a month, each with GPT-6 Pro reasoning, Dots, Space, no five-hour limit in Work and Codex, and API credits equal to the price.

Every ChatGPT plan has unlimited everyday text chats as of Nov 6, 2026, but tools have limits: Work and Codex messages per five hours, voice hours per day, agent messages per month, file uploads, storage and context windows, which OpenAI publishes only in part.

Yes. ChatGPT's Free plan costs nothing and gives unlimited everyday text chats as of Nov 6, 2026, with limits on uploads, images, voice, deep research and Codex, and ads in many countries.