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OpenAI · Coding
Best for: Delegating many parallel coding tasks from ChatGPT.
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Checked 1 Nov 2026. A dash means not published on the sources we checked. Price source developers.openai.com (opens in a new tab)
| Maker | OpenAI |
|---|---|
| Category | Coding |
| Skill needed | Developer |
| Underlying models | OpenAI models developers.openai.com (opens in a new tab) |
| Free tier | Yes developers.openai.com (opens in a new tab)Limited Codex use on the ChatGPT Free and Go plans |
| Plans and tiers | Free US$0 · Go US$8 a month · Plus US$20 a month · Pro US$100 a month · Business US$25 a user developers.openai.com (opens in a new tab) |
| Paid plans | From US$8 a month developers.openai.com (opens in a new tab)Go US$8, Plus US$20, Pro from US$100 (US$100, US$200 or US$500). Business US$25 a user (US$20 annual) |
| Runs on | Your computer, Cloud developers.openai.com (opens in a new tab) |
| Autonomy | Can run unattended developers.openai.com (opens in a new tab)Cloud tasks run in a sandbox in the background |
| MCP support | Yes developers.openai.com (opens in a new tab)MCP connections listed in Codex docs |
| A2A support | – |
| Open source | Yes github.com (opens in a new tab)Codex CLI is Apache 2.0 |
| Integrations | CLI, IDE extension, GitHub, Slack, ChatGPT apps |
| Status | – |
| Launched | – |
| Best for | Delegating many parallel coding tasks from ChatGPT |
| Limitations |
|
Lowest listed monthly plan in US$, or 0 where a free tier is the entry point. Usage-based and enterprise pricing is not shown here, see each profile.
| Agent | From US$ a month |
|---|---|
| OpenAI Codex | 8 |
| Cursor | 8 |
| GitHub Copilot (agent mode and coding agent) | 10 |
| Google Antigravity | 0 |
| Claude Code | 20 |
OpenAI Codex states MCP support developers.openai.com (opens in a new tab). It runs on your computer or servers, so remote and local servers both fit. This is not a test of each server. MCP connections listed in Codex docs
Most shared jobs and the same category first, then the closest entry price. A similarity, not a ranking.
Compare OpenAI Codex with Cursor and GitHub Copilot (agent mode and coding agent)
All 42 AI agents · AI models · How we check sources
OpenAI 
CNBC confirmed OpenAI is now seeking up to US$20bn, down from about US$30bn, and the FT put the post-money valuation at US$1.25tn. The round is still open. Less fresh equity means more scrutiny of every gigawatt OpenAI has signed for.
Source: CNBC (opens in a new tab)
OpenAI
OpenAI says Terra matches GPT-6 Astra on Agents' Last Exam at a tenth of the price per token and finishes tasks over 3x faster.
Source: OpenAI (opens in a new tab)
