A agentindex
Comparison

DeepEval (Confident AI) vs Comet Opik

A like-for-like, spec-level comparison. Both entries are verified against their docs and repo.

DeepEval (Confident AI)

Open-source unit tests for LLMs.

  • + Pytest-style DX, fits existing test suites
  • + Open source metric library
  • − Confident AI cloud is proprietary
  • − Setup for custom metrics takes work

Comet Opik

Open-source eval and tracing from Comet.

  • + Open source with self-host option
  • + Backed by Comet's MLOps experience
  • − Smaller community than Langfuse
  • − UI less polished than paid rivals
Spec DeepEval (Confident AI) Comet Opik
Category eval-observability eval-observability
License Apache-2.0 Apache-2.0
Open source Yes Yes
Self-hostable Yes Yes
MCP support No No
Pricing free freemium
Starting price Self-host free Self-host free
Models multi multi
Languages python python, typescript
GitHub stars 16.5k 19.8k
Last activity 2026-06-25 2026-06-25