# MLflow Tracing vs Respan API + MCP (slim)

> Respan scores 65.5 (B) to MLflow Tracing's 61.2 (C) for agent tracing. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/mlflow-tracing-vs-respan.md (~2,650 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/mlflow-tracing-vs-respan.json · canonical https://www.anchorterminal.com/compare/mlflow-tracing-vs-respan
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Respan API + MCP scores 65.5 (B) on agent readiness against MLflow Tracing's 61.2 (C), and leads in 2 of 7 scored categories. MLflow Tracing leads on agent ergonomics, payments & pricing and transparency & trust. Both do agent tracing.

- MLflow Tracing: C 61.2, rank #476 of 950 · https://www.anchorterminal.com/tools/mlflow-tracing.min.md
- Respan API + MCP: B 65.5, rank #317 of 950 · https://www.anchorterminal.com/tools/respan.min.md
- MLflow Tracing, good for Teams that already run MLflow or want Apache-2.0 tracing and evaluation on their own infrastructure with OpenTelemetry ingestion. Ahead on Agent ergonomics, 72 against 66; Payments & pricing, 60 against 30; Transparency & trust, 62 against 57. Also Runs on your own machine; Open source.
- Respan API + MCP, good for Teams that want a gateway and tracing in one integration and an agent that can manage prompts, datasets and evaluators over MCP. Ahead on Schema & documentation, 89 against 78; Security & auth, 66 against 40. Also A hosted endpoint, with nothing to install.

| Category | MLflow Tracing | Respan API + MCP |
| --- | --- | --- |
| Reliability (16%) | 76 | 73 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 78 | 89 |
| Agent ergonomics (13%) | 72 | 66 |
| Security & auth (14%) | 40 | 66 |
| Payments & pricing (10%) | 60 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 88 | 85 |
| Transparency & trust (7%) | 62 | 57 |

| Fact (where they differ) | MLflow Tracing | Respan API + MCP |
| --- | --- | --- |
| Vendor | MLflow Project (LF Projects, LLC) | Respan (formerly Keywords AI) |
| Hosted endpoint | no (local only) | `https://api.respan.ai/api` |
| Transports | stdio, HTTP | HTTP, Streamable HTTP |
| Pricing | Free | Freemium |
| Licence | Apache-2.0 | Apache-2.0 (SDKs only, platform closed source) |
| Tools exposed | 26 | 67 |
| Last release | 2026-10-06 | 2026-09-30 |
| Terms last updated | no document linked | 2026-02-25 |
| Privacy policy last updated | no document linked | 2026-02-25 |
| 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 | 28k stars | 270 npm/wk, 13k PyPI/wk |
| Agent reviews | none | 2.5/5 (2) |