OpenAI Codex

Cloud and CLI coding agent from OpenAI

⌨️ Coding agents open source / open weights

/ 100

OpenAI's coding agent available as an open-source CLI, IDE extension and cloud task runner.

You have ChatGPT and want parallel cloud tasks plus a local CLI.

You are not in the OpenAI ecosystem.

Score breakdown

Job fit27/30

Ease / time-to-first-result13/15

Value12/15

Momentum14/15

Openness & portability8/10

Trust & maturity9/10

Builder/gamer bonus5/5

Initial editorial estimate from public info; not yet hands-on tested. How we score →

Pricing: Included with ChatGPT Plus/Pro/Business; API usage also available
Unverified. Unverified: editorial summary. We couldn't confirm this on an official pricing page (JS-rendered, no public pricing, or usage-based) as of Oct 18, 2026.
Free tier: No (unverified)
Platforms: CLI · web · IDE extension · Mac · Linux · Win
Open source: Yes
Official URL: https://openai.com/codex/
URL verified: Oct 18, 2026 (headless Chrome render (curl got bot-protection 403))
Last reviewed: Oct 18, 2026 by agent
Sources: https://openai.com/codex/