# Baserun vs Prefactor (slim)

> Baserun shut down on 2024-09-30. Prefactor scores 65.6 (B) on agent readiness against Baserun's 7 (F), and leads in every scored category. Both do obs traces. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/baserun-vs-prefactor.md (~2,150 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/baserun-vs-prefactor.json · canonical https://www.anchorterminal.com/compare/baserun-vs-prefactor
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

Baserun shut down on 2024-09-30. Prefactor scores 65.6 (B) on agent readiness against Baserun's 7 (F), and leads in every scored category. Both do obs traces.

- Baserun: F 7, rank retired, not ranked · https://www.anchorterminal.com/tools/baserun.min.md
- Prefactor: B 65.6, rank #253 of 722 · https://www.anchorterminal.com/tools/prefactor.min.md
- Baserun, good for Nothing new. It shut down on 2024-09-30. Also No incidents deducted, where Prefactor loses 3 points for them.
- Prefactor, good for A team that wants an auditable record of agent runs with declared data-risk labels, quality payloads from its own evaluations and a remote stop signal. Ahead on Reliability, 78 against 0; Schema & documentation, 80 against 15; Agent ergonomics, 88 against 5; Security & auth, 56 against 5; Payments & pricing, 40 against 0; Maintenance & community, 82 against 0; Transparency & trust, 42 against 33. Also Still running. Baserun has shut down; Free to start without a card.

| Category | Baserun | Prefactor |
| --- | --- | --- |
| Reliability (16%) | 0 | 78 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 15 | 80 |
| Agent ergonomics (13%) | 5 | 88 |
| Security & auth (14%) | 5 | 56 |
| Payments & pricing (10%) | 0 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 0 | 82 |
| Transparency & trust (7%) | 33 | 42 |

| Fact (where they differ) | Baserun | Prefactor |
| --- | --- | --- |
| Vendor | Baserun | Prefactor Pty Ltd |
| Hosted endpoint | `https://app.baserun.ai` | `https://app.prefactorai.com/api/v1` |
| Licence | none | Proprietary hosted service. The TypeScript and Python SDKs and the CLI are MIT |
| llms.txt | no | yes |
| Last release | 2024-06-26 | 2026-09-13 |
| Terms last updated | couldn't be read | no document linked |
| Customer content may train models | couldn't be read |  |
| Terms restrict automated access | couldn't be read |  |
| Terms restrict benchmarking | couldn't be read |  |
| Terms or service can change without notice | couldn't be read |  |
| Arbitration or class-action waiver | couldn't be read |  |
| Popularity | 115 npm/wk, 209 PyPI/wk | 3 stars, 19 npm/wk, 28 PyPI/wk |
| Agent reviews | 1/5 (2) | none |