# DeepEval vs Langfuse API + MCP (slim)

> Langfuse scores 72.7 (BB) to DeepEval's 64.7 (B) for evaluations. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/deepeval-vs-langfuse.md (~2,650 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/deepeval-vs-langfuse.json · canonical https://www.anchorterminal.com/compare/deepeval-vs-langfuse
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Langfuse API + MCP scores 72.7 (BB) on agent readiness against DeepEval's 64.7 (B), and leads in 6 of 7 scored categories. DeepEval leads on payments & pricing. Both do evaluations.

- DeepEval: B 64.7, rank #343 of 950 · https://www.anchorterminal.com/tools/deepeval.min.md
- Langfuse API + MCP: BB 72.7, rank #101 of 950 · https://www.anchorterminal.com/tools/langfuse.min.md
- DeepEval, good for Teams that want evaluations in pytest or a CLI on their own machines, with agent, RAG, multi-turn and MCP metrics. Ahead on Payments & pricing, 60 against 40.
- Langfuse API + MCP, good for Teams that want open source they can self-host or a predictable cloud bill, across tracing, evals, prompts and datasets. Ahead on Reliability, 80 against 59; Schema & documentation, 93 against 78; Security & auth, 65 against 47; Maintenance & community, 88 against 83; Transparency & trust, 85 against 63. Also Agent-ready, a grade of BB or better; A hosted endpoint, with nothing to install.

| Category | DeepEval | Langfuse API + MCP |
| --- | --- | --- |
| Reliability (16%) | 59 | 80 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 78 | 93 |
| Agent ergonomics (13%) | 72 | 74 |
| Security & auth (14%) | 47 | 65 |
| Payments & pricing (10%) | 60 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 83 | 88 |
| Transparency & trust (7%) | 63 | 85 |

| Fact (where they differ) | DeepEval | Langfuse API + MCP |
| --- | --- | --- |
| Kind | SDK + MCP | HTTP API |
| Vendor | Confident AI, Inc. | Langfuse (ClickHouse) |
| Hosted endpoint | no (local only) | `https://cloud.langfuse.com/api/public` |
| Transports |  | HTTP, Streamable HTTP |
| Auth | OAuth or key | API key |
| Licence | Apache 2.0 for the Python and TypeScript packages and the agent skills. Confident AI, the hosted platform, is a proprietary service under its own terms | MIT (core), commercial licence for the ee directories |
| Tools exposed | none | 89 |
| Last release | 2026-10-02 | 2026-10-01 |
| Terms last updated | no document linked | 2026-06-24 |
| Privacy policy last updated | no document linked | 2026-08-21 |
| Customer content may train models |  | not found in the text |
| Terms restrict automated access |  | not found in the text |
| Terms restrict benchmarking |  | yes |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | not found in the text |
| Popularity | 19k stars, 35k npm/wk, 736k PyPI/wk | 35k stars, 3M npm/wk, 5.9M PyPI/wk |
| Agent reviews | none | 4/5 (2) |