OpenAI Codex vs Jules
Compare OpenAI Codex and Jules on pricing, free tier, open source, API, self-host, verdict and momentum.
Both are coding tools. OpenAI Codex is freemium (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) with open source, an API and a free tier; Jules is free (public beta is free with usage limits; paid pricing expected after beta) with a free tier. The catalog stamp is situational for OpenAI Codex and situational for Jules, last verified 2026-08-26 and 2026-08-19 respectively.
OpenAI Codex
OpenAI's coding agent — terminal CLI, IDE, and cloud tasks, bundled into ChatGPT plans.
Jules
Google's asynchronous coding agent that clones your repo and works in the background.
| field | OpenAI Codex | Jules |
|---|---|---|
| pricing | freemium · 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 · public beta is free with usage limits; paid pricing expected after beta |
| free tier | yes | yes |
| open source | yes | no |
| api | yes | no |
| self-host | no | no |
| verdict | situational | situational |
| momentum | blueshift | steady |
| last verified | 2026-08-26 | 2026-08-19 |
| key limitation | Local and cloud usage share a rolling 5-hour window; weekly caps also apply. | Only available in regions where Gemini is supported; geo-blocked in some countries. |
The call
Pick OpenAI Codex if open source matters.
Pick Jules for developers in Gemini-supported regions who want async codeb…
OpenAI Codex sources
Jules sources
Open live compare →OpenAI Codex pageJules pageOpenAI Codex.jsonJules.json