OpenAI · queued
OpenAI Codex CLI
| Install | npm install -g openai-codex (or pip install openai-codex); binary: codex |
|---|---|
| Pricing | Included in ChatGPT Pro $200/mo; or raw API at GPT-5.5 rates |
| Default model | GPT-5.5 (GPT-5.5-mini available for cost-sensitive runs) |
| CLI surface | Yes — autonomous evaluation possible |
| Momentum (May 2026) | growing |
| Homepage | https://developers.openai.com/codex |
The Codex name has a long history — the original 2021 Codex API (code-davinci-002) was deprecated in March 2023. The current Codex CLI is a complete re-architecture: GPT-5.5 backed, with Goal Mode for multi-hour autonomous runs, native subagents, MCP server support, plugin marketplace, browser verification, and codex doctor diagnostics. The April 2026 update was the major release shifting Codex from “coding agent” to “long-running agent workspace.” Treat as a new entrant, not legacy Codex.
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