A agentindex
Comparison

DeepEval (Confident AI) vs Helicone

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

Helicone

Proxy-based LLM observability with instant cost tracking.

  • + Fastest setup via a drop-in proxy
  • + Automatic cost and rate-limit tracking
  • − Eval features lighter than competitors
  • − Proxy model adds a hop
Spec DeepEval (Confident AI) Helicone
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 Free tier
Models multi multi
Languages python typescript
GitHub stars 16.5k 5.9k
Last activity 2026-06-25 2026-06-11