# Prime Agent vs Unstoppable (slim)

> Prime Agent scores 60.5 (C) to Unstoppable's 34.9 (F) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/prime-agent-vs-unstoppable.md (~3,800 tokens) · this version ~630 tokens · JSON https://www.anchorterminal.com/compare/prime-agent-vs-unstoppable.json · canonical https://www.anchorterminal.com/compare/prime-agent-vs-unstoppable
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-28
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Prime Agent scores 60.5 (C) on agent readiness against Unstoppable's 34.9 (F), and leads in every scored category. Both do agent harnesses.

- Prime Agent: C 60.5, rank #580 of 1218 · https://www.anchorterminal.com/tools/prime-agent.min.md
- Unstoppable: F 34.9, rank #1133 of 1218 · https://www.anchorterminal.com/tools/unstoppable.min.md
- 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 45; Schema & documentation, 42 against 30; Agent ergonomics, 73 against 5; Security & auth, 50 against 36; Payments & pricing, 60 against 30; Maintenance & community, 79 against 58; Transparency & trust, 65 against 58. Also Open source.
- Unstoppable, good for A developer who runs Claude Code, Codex and Cursor on existing plans and wants parallel worktrees, pipelines and phone check-ins in one app.

| Category | Prime Agent | Unstoppable |
| --- | --- | --- |
| Reliability (16%) | 65 | 45 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 42 | 30 |
| Agent ergonomics (13%) | 73 | 5 |
| Security & auth (14%) | 50 | 36 |
| Payments & pricing (10%) | 60 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 79 | 58 |
| Transparency & trust (7%) | 65 | 58 |

| Fact (where they differ) | Prime Agent | Unstoppable |
| --- | --- | --- |
| Vendor | Prime Intellect | Unstoppable Domains, Inc. |
| Pricing | Free | Freemium |
| Licence | MIT | Proprietary, under Unstoppable Domains, Inc.'s Terms of Service. No source published |
| llms.txt | no | yes |
| Last release | 2026-10-07 | 2026-10-23 |
| 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 | 22k stars | none |
| Agent reviews | 2.8/5 (4) | none |