Independent review. IonBin has no partnership with OpenAI Codex and was not paid for this page. Our evaluation is our own, based on public documentation and our research. Product names are trademarks of their owners and are used for identification only. How disclosure works.
OpenAI's coding agent: CLI, IDE extension, ChatGPT app and Codex cloud. Writes, reviews and debugs code; local surfaces share MCP configuration, and Codex Cloud tasks run in isolated workspaces.
OpenAI says Codex is included in ChatGPT Free, Go, Plus, Pro, Business, Edu and Enterprise, with usage limits that vary by plan and can be extended with ChatGPT credits. Codex with an API key is billed at API rates and has no cloud-based features. Checked 2026-10-17. source ↗
The ChatGPT desktop app, Codex CLI and IDE extension share one MCP configuration. source ↗
How OpenAI Codex connects to each AI platform: native connector or MCP, API through code the agent writes, browser control, or file upload.
| Platform | MCP / connector | API (agent-written code) | Browser | Upload / export |
|---|---|---|---|---|
| Claude (incl. Claude Code) | No documented route | Confirmed Claude (incl. Claude Code) can run code; OpenAI Codex publishes an API. Claude (incl. Claude Code) docs ↗ | Confirmed Claude Code with the Claude in Chrome extension (Chrome, Edge and other Chromium browsers) Claude (incl. Claude Code) browser docs ↗ | Confirmed Export from OpenAI Codex, then works on the files in your project; chat accepts attachments Claude (incl. Claude Code) docs ↗ |
| OpenAI Codex | No documented route | Confirmed OpenAI Codex can run code; OpenAI Codex publishes an API. OpenAI Codex docs ↗ | Confirmed Only in the ChatGPT desktop app; not in the Codex CLI or IDE extension OpenAI Codex browser docs ↗ | Confirmed Export from OpenAI Codex, then works on local repositories OpenAI Codex docs ↗ |
| Google Antigravity | No documented route | Confirmed Google Antigravity can run code; OpenAI Codex publishes an API. Google Antigravity docs ↗ | Confirmed Browser subagent via /browser, documented as an Antigravity App feature; the IDE has separate browser docs Google Antigravity browser docs ↗ | Confirmed Export from OpenAI Codex, then works on local projects and worktrees Google Antigravity docs ↗ |
Confirmed means both the tool's and the platform's official docs describe that route (links in the cell); IonBin has not tested every pairing. Not documented means it may work, but no official docs describe that route end to end. Checked Oct 17, 2026.
| Level | Status | Detail / source |
|---|---|---|
| Native connector / MCP | No | — |
| API / CLI | Yes | Codex CLI, SDK and IDE extension with an API key (no cloud features on API-key use) |
| Browser-only | No | Web app; also reachable programmatically |
| Bulk upload / import | No | — |
Recorded Oct 17, 2026. Setup and plan limits vary; check the vendor's docs. How levels are assigned.
Dev, web & IT Swap-in
Can use MCP servers. 86 tools in IonBin publish an official one:
No long-form review yet. Verdict is based on research, not hands-on testing.
AI code editor and coding agent with a desktop app, a CLI for terminal and CI use, and MCP support. Paid plans share one AI usage pool with Grok; the Plus plan uses Grok models only.
Anthropic's AI assistant on web, desktop and mobile. Paid plans add more usage, Claude Code and Projects; every plan, Free included, can add custom connectors via remote MCP (Free is limited to one).
Google's agent-first development platform: a desktop app for running agents in parallel, a CLI, IDE extensions and a Python SDK. Works with MCP servers; the desktop app adds a browser subagent that drives Chrome.
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