# Harness² vs OpenMausBot (slim)

> OpenMausBot scores 65.4 (B) to Harness²'s 42 (E) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/harness2-vs-openmausbot.md (~3,850 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/harness2-vs-openmausbot.json · canonical https://www.anchorterminal.com/compare/harness2-vs-openmausbot
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-30
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

OpenMausBot scores 65.4 (B) on agent readiness against Harness²'s 42 (E), and leads in every scored category. Both do agent harnesses.

- Harness²: E 42, rank #1098 of 1239 · https://www.anchorterminal.com/tools/harness2.min.md
- OpenMausBot: B 65.4, rank #368 of 1239 · https://www.anchorterminal.com/tools/openmausbot.min.md
- 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. Also No key needed to call it.
- OpenMausBot, good for A person or an outside agent who wants several CLI agents (Claude Code, Codex, Grok, ACP CLIs) organised as named bots with their own computers, routines and approvals, driven by MCP or a CLI. Ahead on Reliability, 60 against 20; Schema & documentation, 90 against 51; Agent ergonomics, 77 against 59; Security & auth, 59 against 44; Payments & pricing, 50 against 40; Maintenance & community, 74 against 36; Transparency & trust, 59 against 49. Also Runs on your own machine; Free to start without a card.

| Category | Harness² | OpenMausBot |
| --- | --- | --- |
| Reliability (16%) | 20 | 60 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 51 | 90 |
| Agent ergonomics (13%) | 59 | 77 |
| Security & auth (14%) | 44 | 59 |
| Payments & pricing (10%) | 40 | 50 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 36 | 74 |
| Transparency & trust (7%) | 49 | 59 |

| Fact (where they differ) | Harness² | OpenMausBot |
| --- | --- | --- |
| Vendor | Google (Google Research) | Supamaus Software Private Limited |
| Transports |  | stdio |
| Auth | None | OAuth or key |
| Pricing | Free | Freemium |
| Licence | 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). | Apache-2.0 |
| Tools exposed | none | 20 |
| Last release | 2026-10-08 | 2026-10-30 |
| Terms last updated | no document linked | 2026-10-10 |
| Privacy policy last updated | no document linked | 2026-10-18 |
| Customer content may train models |  | not found in the text |
| 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 | 4.2k stars | 8.2k stars, 3.5k npm/wk |
| Agent reviews | 2.5/5 (4) | none |