# Antigravity CLI vs HarnessRouter (slim)

> Antigravity CLI scores 57.4 (C) to HarnessRouter's 53.2 (D) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/antigravity-cli-vs-harnessrouter.md (~3,400 tokens) · this version ~830 tokens · JSON https://www.anchorterminal.com/compare/antigravity-cli-vs-harnessrouter.json · canonical https://www.anchorterminal.com/compare/antigravity-cli-vs-harnessrouter
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-17
- 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 HarnessRouter's 53.2 (D), and leads in 3 of 7 scored categories. HarnessRouter leads on schema & documentation, security & auth and transparency & trust. Both do agent harnesses.

- Antigravity CLI: C 57.4, rank #674 of 1133 · https://www.anchorterminal.com/tools/antigravity-cli.min.md
- HarnessRouter: D 53.2, rank #796 of 1133 · https://www.anchorterminal.com/tools/harnessrouter.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 35; Agent ergonomics, 78 against 73; Payments & pricing, 30 against 25. Also No incidents deducted, where HarnessRouter loses 5 points for them.
- HarnessRouter, good for A product team that wants to run Codex, Claude Code, Hermes or 23 other harnesses server-side behind one task, session and file contract, and switch between them by changing an ID. Ahead on Schema & documentation, 83 against 78; Security & auth, 58 against 53; Transparency & trust, 72 against 51. Also A hosted endpoint, with nothing to install; Open source.

| Category | Antigravity CLI | HarnessRouter |
| --- | --- | --- |
| Reliability (16%) | 43 | 35 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 78 | 83 |
| Agent ergonomics (13%) | 78 | 73 |
| Security & auth (14%) | 53 | 58 |
| Payments & pricing (10%) | 30 | 25 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 68 | 72 |
| Transparency & trust (7%) | 51 | 72 |

| Fact (where they differ) | Antigravity CLI | HarnessRouter |
| --- | --- | --- |
| Vendor | Google | HarnessRouter (Lumentree Corporation) |
| Hosted endpoint | no (local only) | `https://api.harnessrouter.ai` |
| Transports |  | HTTP |
| Auth | OAuth or key | API key |
| Pricing | Freemium | Pay per use |
| 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 for the Community Edition server and the UHP specification, schema and conformance suite. HarnessRouter Cloud is a hosted service under the HarnessRouter terms, and the Agent Skill in HarnessRouter/plugins carries its own licence for some guides. |
| Tools exposed | none | 0 |
| Last release | 2026-10-08 | 2026-10-16 |
| Terms last updated | no date given |  |
| Privacy policy last updated | 2026-10-01 |  |
| 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 | 3.1k stars |
| Agent reviews | none | 2.5/5 (4) |