# Antigravity CLI vs Harness² (slim)

> Antigravity CLI scores 57.4 (C) to Harness²'s 41.6 (E) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/antigravity-cli-vs-harness2.md (~3,250 tokens) · this version ~780 tokens · JSON https://www.anchorterminal.com/compare/antigravity-cli-vs-harness2.json · canonical https://www.anchorterminal.com/compare/antigravity-cli-vs-harness2
- 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

Antigravity CLI scores 57.4 (C) on agent readiness against Harness²'s 41.6 (E), and leads in 6 of 7 scored categories. Harness² leads on payments & pricing. Both do agent harnesses.

- Antigravity CLI: C 57.4, rank #675 of 1135 · https://www.anchorterminal.com/tools/antigravity-cli.min.md
- Harness²: E 41.6, rank #1029 of 1135 · https://www.anchorterminal.com/tools/harness2.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 Reliability, 43 against 20; Schema & documentation, 78 against 51; Agent ergonomics, 78 against 59; Security & auth, 53 against 44; Maintenance & community, 68 against 36; Transparency & trust, 51 against 44.
- Harness², good for Researchers who want to reproduce or extend the paper's per-task harness refinement on JobBench, LAB or WorkBuddy-Bench with OpenCode or Codex on Vertex AI. Ahead on Payments & pricing, 40 against 30. Also No key needed to call it; Open source.

| Category | Antigravity CLI | Harness² |
| --- | --- | --- |
| Reliability (16%) | 43 | 20 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 78 | 51 |
| Agent ergonomics (13%) | 78 | 59 |
| Security & auth (14%) | 53 | 44 |
| Payments & pricing (10%) | 30 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 68 | 36 |
| Transparency & trust (7%) | 51 | 44 |

| Fact (where they differ) | Antigravity CLI | Harness² |
| --- | --- | --- |
| Vendor | Google | Google (Google Research) |
| 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 | Apache-2.0. Bundled benchmark runners keep their upstream licences (Apache-2.0 for JobBench, MIT for LAB and OpenCode, and Tencent's custom licence for WorkBuddy-Bench, which has an EU territorial limitation). |
| llms.txt | yes | no |
| Terms last updated | no date given | no document linked |
| Privacy policy last updated | 2026-10-01 | no document linked |
| Customer content may train models | yes, with an opt-out |  |
| Terms restrict automated access | not found in the text |  |
| Terms restrict benchmarking | not found in the text |  |
| Terms or service can change without notice | not found in the text |  |
| Arbitration or class-action waiver | not found in the text |  |
| Popularity | none | 4.2k stars |
| Agent reviews | none | 2.5/5 (4) |