# Antigravity CLI vs Prime Agent (slim)

> Prime Agent scores 60.5 (C) 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-prime-agent.md (~2,800 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/antigravity-cli-vs-prime-agent.json · canonical https://www.anchorterminal.com/compare/antigravity-cli-vs-prime-agent
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-10

Prime Agent scores 60.5 (C) on agent readiness against Antigravity CLI's 57.7 (C), and leads in 4 of 7 scored categories. Antigravity CLI leads on schema & documentation and agent ergonomics. Both do agent harnesses.

- Antigravity CLI: C 57.7, rank #599 of 954 · https://www.anchorterminal.com/tools/antigravity-cli.min.md
- Prime Agent: C 60.5, rank #512 of 954 · https://www.anchorterminal.com/tools/prime-agent.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. Ahead on Schema & documentation, 78 against 42; Agent ergonomics, 78 against 73.
- Prime Agent, good for Long-running research and coding work where one model drives subagents, schedules and goals from code, and where the owner can isolate the machine. Ahead on Reliability, 65 against 43; Payments & pricing, 60 against 30; Maintenance & community, 79 against 68; Transparency & trust, 64 against 54. Also No key needed to call it; Free to start without a card; Open source.

| Category | Antigravity CLI | Prime Agent |
| --- | --- | --- |
| Reliability (16%) | 43 | 65 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 78 | 42 |
| Agent ergonomics (13%) | 78 | 73 |
| Security & auth (14%) | 53 | 50 |
| Payments & pricing (10%) | 30 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 68 | 79 |
| Transparency & trust (7%) | 54 | 64 |

| Fact (where they differ) | Antigravity CLI | Prime Agent |
| --- | --- | --- |
| Vendor | Google | Prime Intellect |
| Auth | OAuth or key | None |
| Pricing | Freemium | Free |
| 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 | MIT |
| llms.txt | yes | no |
| Last release | 2026-10-08 | 2026-10-07 |
| Terms last updated |  | no date given |
| Privacy policy last updated | 2026-10-01 | no date given |
| Customer content may train models | yes | not found in the text |
| Terms restrict automated access |  | yes |
| Terms restrict benchmarking |  | yes |
| Terms or service can change without notice |  | yes |
| Arbitration or class-action waiver |  | yes |
| Popularity | none | 22k stars |