# Harness vs Prime Agent (slim)

> Prime Agent and Harness score within a point of each other for multi-agent orchestration, 60.5 and 60.3 out of 100. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/harness-autonomous-vs-prime-agent.md (~2,950 tokens) · this version ~630 tokens · JSON https://www.anchorterminal.com/compare/harness-autonomous-vs-prime-agent.json · canonical https://www.anchorterminal.com/compare/harness-autonomous-vs-prime-agent
- 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

Prime Agent and Harness score within a point of each other on agent readiness, 60.5 (C) and 60.3 (C). Harness leads on schema & documentation, agent ergonomics and security & auth. Both do multi-agent orchestration.

- Harness: C 60.3, rank #570 of 1133 · https://www.anchorterminal.com/tools/harness-autonomous.min.md
- Prime Agent: C 60.5, rank #559 of 1133 · https://www.anchorterminal.com/tools/prime-agent.min.md
- Harness, good for A developer who runs Claude Code and Codex on several machines and wants their agents to hand work to each other where the person can watch. Ahead on Schema & documentation, 85 against 42; Agent ergonomics, 82 against 73; Security & auth, 57 against 50. Also Runs on your own machine.
- 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 35; Payments & pricing, 60 against 40; Maintenance & community, 79 against 60. Also No key needed to call it.

| Category | Harness | Prime Agent |
| --- | --- | --- |
| Reliability (16%) | 35 | 65 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 85 | 42 |
| Agent ergonomics (13%) | 82 | 73 |
| Security & auth (14%) | 57 | 50 |
| Payments & pricing (10%) | 40 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 60 | 79 |
| Transparency & trust (7%) | 68 | 64 |

| Fact (where they differ) | Harness | Prime Agent |
| --- | --- | --- |
| Vendor | Autonomous, Inc. | Prime Intellect |
| Transports | stdio |  |
| Auth | OAuth | None |
| Tools exposed | 7 | none |
| llms.txt | yes | no |
| Last release | 2026-10-17 | 2026-10-07 |
| Terms last updated |  | no date given |
| Privacy policy last updated |  | no date given |
| Customer content may train models |  | 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 | 1.3k stars | 22k stars |
| Agent reviews | 3/5 (4) | 2.8/5 (4) |