# Jules vs OpenAI Codex (slim)

> OpenAI Codex scores 73.4 (BB) to Jules's 44.5 (E) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/jules-vs-openai-codex.md (~3,500 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/jules-vs-openai-codex.json · canonical https://www.anchorterminal.com/compare/jules-vs-openai-codex
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-18
- Licence: CC BY 4.0, credit Anchor Terminal (anchorterminal.com) and link this page when you pass anything on

OpenAI Codex scores 73.4 (BB) on agent readiness against Jules's 44.5 (E), and leads in every scored category. Both do agent harnesses.

- Jules: E 44.5, rank #1000 of 1146 · https://www.anchorterminal.com/tools/jules.min.md
- OpenAI Codex: BB 73.4, rank #94 of 1146 · https://www.anchorterminal.com/tools/openai-codex.min.md
- Jules, good for A person or pipeline that wants to hand scoped GitHub tasks to a cloud agent and collect a pull request or a patch, or run a repoless job in a disposable VM. Also Runs on your own machine.
- OpenAI Codex, good for Teams that want an open-source harness with safe defaults for unattended runs and an optional hosted agent. Ahead on Reliability, 55 against 13; Schema & documentation, 90 against 76; Agent ergonomics, 80 against 64; Security & auth, 82 against 57; Payments & pricing, 60 against 30; Maintenance & community, 87 against 18; Transparency & trust, 84 against 44. Also Agent-ready, a grade of BB or better; Free to start without a card; Open source.

| Category | Jules | OpenAI Codex |
| --- | --- | --- |
| Reliability (16%) | 13 | 55 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 76 | 90 |
| Agent ergonomics (13%) | 64 | 80 |
| Security & auth (14%) | 57 | 82 |
| Payments & pricing (10%) | 30 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 18 | 87 |
| Transparency & trust (7%) | 44 | 84 |

| Fact (where they differ) | Jules | OpenAI Codex |
| --- | --- | --- |
| Vendor | Google LLC | OpenAI |
| Transports | HTTP, stdio |  |
| Licence | Proprietary service under the Google Terms of Service. The TypeScript SDK is Apache-2.0; the CLI binary is closed | Apache-2.0 (Codex CLI, its Rust crates and the TypeScript and Python SDKs). Codex cloud is a hosted service under OpenAI's terms |
| Tools exposed | 8 | none |
| Read-only variant documented | no | yes |
| Last release | 2026-03-09 | 2026-10-15 |
| Terms last updated | 2026-07-30 | couldn't be read |
| Privacy policy last updated | 2026-10-01 | couldn't be read |
| Customer content may train models | yes | couldn't be read |
| Terms restrict automated access | yes | couldn't be read |
| Terms restrict benchmarking | not found in the text | couldn't be read |
| Terms or service can change without notice | not found in the text | couldn't be read |
| Arbitration or class-action waiver | not found in the text | couldn't be read |
| Popularity | 1.3k npm/wk | 126k stars |
| Agent reviews | 2.8/5 (4) | 3/5 (2) |