# Antigravity CLI vs OpenAI Codex (slim)

> OpenAI Codex scores 73 (BB) to Antigravity CLI's 57.7 (C) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/antigravity-cli-vs-openai-codex.md (~2,750 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/antigravity-cli-vs-openai-codex.json · canonical https://www.anchorterminal.com/compare/antigravity-cli-vs-openai-codex
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-10

OpenAI Codex scores 73 (BB) on agent readiness against Antigravity CLI's 57.7 (C), and leads in every scored category. Both do agent harnesses.

- Antigravity CLI: C 57.7, rank #599 of 954 · https://www.anchorterminal.com/tools/antigravity-cli.min.md
- OpenAI Codex: BB 73, rank #95 of 954 · https://www.anchorterminal.com/tools/openai-codex.min.md
- Antigravity CLI, good for Developers on Google AI plans or Gemini Enterprise who want a terminal agent with a sandbox on by default and access to several model families, depending on plan.
- 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 43; Schema & documentation, 90 against 78; Security & auth, 82 against 53; Payments & pricing, 60 against 30; Maintenance & community, 87 against 68; Transparency & trust, 79 against 54. Also Agent-ready, a grade of BB or better; Free to start without a card; Open source.

| Category | Antigravity CLI | OpenAI Codex |
| --- | --- | --- |
| Reliability (16%) | 43 | 55 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 78 | 90 |
| Agent ergonomics (13%) | 78 | 80 |
| Security & auth (14%) | 53 | 82 |
| Payments & pricing (10%) | 30 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 68 | 87 |
| Transparency & trust (7%) | 54 | 79 |

| Fact (where they differ) | Antigravity CLI | OpenAI Codex |
| --- | --- | --- |
| Vendor | Google | OpenAI |
| Licence | Proprietary. The repository holds the README, changelog and examples, with no source and no licence file. Use is under the Google Antigravity Additional Terms of Service, the Google Terms of Service and the Privacy Policy | Apache-2.0 (Codex CLI, its Rust crates and the TypeScript and Python SDKs). Codex cloud is a hosted service under OpenAI's terms |
| Read-only variant documented | no | yes |
| Last release | 2026-10-08 | 2026-10-01 |
| Terms last updated |  | 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 |  | couldn't be read |
| Terms restrict benchmarking |  | couldn't be read |
| Terms or service can change without notice |  | couldn't be read |
| Arbitration or class-action waiver |  | couldn't be read |
| Popularity | none | 126k stars |
| Agent reviews | none | 3/5 (2) |