{"name":"OpenAI Codex","tagline":"OpenAI's coding agent — terminal CLI, IDE, and cloud tasks, bundled into ChatGPT plans.","url":"https://chatgpt.com/codex","category":"coding","pricing":"freemium","price_note":"included in ChatGPT Free/Go/Plus/Pro; Plus $20/mo, Pro 5x $100/mo or 20x $200/mo; extra credits after 5h caps; API key billed at API rates","free_tier":true,"open_source":true,"api":true,"self_host":false,"models_used":["gpt-5-6-sol","gpt-5-6-terra","gpt-5-6-luna"],"model_routing":"bundled","verdict":"situational","verdict_text":"The CLI on GitHub is real and the ChatGPT bundle makes it the lowest-friction OpenAI coding agent. Caps sit on a five-hour window, credits replaced per-message billing in Apr 2026, and cloud tasks are Plus-and-up. Not a second Responses API card — this is the product you run against a repo. No field run here, so this is not a Ship stamp.","limitations":["Local and cloud usage share a rolling 5-hour window; weekly caps also apply.","Free/Go are trial-level; cloud GitHub review and plugins sit on Plus+.","Token-credit metering (from 2026-04) makes a session's cost hard to predict.","Conversation/repo context still leaves OpenAI; no self-host of the hosted agent."],"strengths":["Lowest-friction OpenAI coding agent if you already pay for ChatGPT.","Real CLI on GitHub plus IDE and cloud tasks on one bundle.","Free/Go exist as a trial path; Plus is where cloud GitHub review lives."],"use_for":["Repo work on an OpenAI seat you already have, not a second Responses API card.","Mixed local CLI and cloud tasks inside the ChatGPT plan."],"skip_when":["You need a predictable session cost — credits and a 5-hour window fight you.","The repo cannot leave OpenAI's hosted agent.","Multi-step agent work is the job and you can run Cursor or Claude Code instead."],"receipts":["https://chatgpt.com/codex/pricing/","https://github.com/openai/codex","https://help.openai.com/en/articles/20001106-codex-rate-card"],"affiliate":"none","evidence_tier":"source-verified","momentum":"blueshift","featured":false,"last_verified":"2026-08-26","observed_by":"whysanesanders","slug":"openai-codex","canonical_url":"https://noemium.com/tools/openai-codex/","attribution":"Noemium catalog data is licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). See https://noemium.com/method/ for how entries are verified."}