Helicone alternatives

Open-source LLM observability and AI gateway — one-line proxy integration captures every LLM call; sessions, custom properties, evals. Acquired by Mintlify in Mar 2026 and placed in maintenance mode; helicone.ai now states it is no longer part of Mintlify. Full Helicone record →

  1. 1 Confident AI / DeepEval Evaluation & observability platforms

    also in Evaluation & observability platforms · also open source · also self-hostable · also offered managed · also has MCP

    OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 19k released 2026-10-16 Apache-2.0 (DeepEval) Compare with Helicone →

  2. 2 TruLens Evaluation & observability platforms

    also in Evaluation & observability platforms · also open source · also self-hostable · also offered managed · also has MCP

    OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 3.6k released 2026-10-19 MIT Compare with Helicone →

  3. 3 Ragas Evaluation & observability platforms

    also in Evaluation & observability platforms · also open source · also self-hostable · also offered managed

    OSS ✓ Self-host ✓ Managed ✓ MCP ? ★ 16k released 2026-01-13 Apache-2.0 Compare with Helicone →

  4. 4 OpenLLMetry (Traceloop) Evaluation & observability platforms

    also in Evaluation & observability platforms · also open source · also self-hostable · also offered managed

    OSS ✓ Self-host ✓ Managed ✓ MCP ? ★ 7.5k released 2026-09-29 Apache-2.0 Compare with Helicone →

  5. 5 OpenInference Evaluation & observability platforms

    also in Evaluation & observability platforms · also open source · also self-hostable · also offered managed

    OSS ✓ Self-host ✓ Managed ✓ MCP ? ★ 1.3k released 2026-10-23 Apache-2.0 Compare with Helicone →

  6. 6 Laminar Evaluation & observability platforms

    also in Evaluation & observability platforms · also open source · also self-hostable · also has MCP

    OSS ✓ Self-host ✓ Managed ? MCP ✓ ★ 3.5k released 2026-10-16 Apache-2.0 Compare with Helicone →

  7. 7 Inspect AI Evaluation & observability platforms

    also in Evaluation & observability platforms · also open source · also self-hostable · also has MCP

    OSS ✓ Self-host ✓ Managed ? MCP ✓ ★ 3.1k released 2026-10-29 MIT Compare with Helicone →

  8. 8 Arize AI Evaluation & observability platforms

    also in Evaluation & observability platforms · also self-hostable · also offered managed · also has MCP

    OSS — Self-host ✓ Managed ✓ MCP ✓ released 2026-10-26 proprietary; Python SDK Apache-2.0 Compare with Helicone →

Ranked by shared memory design (storage, retrieval, conflict handling, memory unit), same section and shared must-haves (open source, self-hosting, MCP), with adoption as a tie-breaker. ✓ confirmed · — no · ? not in the catalog yet. Want picks for your own requirements? Use the chooser. Checking a whole project? Check your stack.