Skip to main content

DeepEval vs Helicone

DeepEvalHelicone

Bottom line: DeepEval for engineering teams treating evals like tests; Helicone for teams wanting simple, cheap LLM logging.

Open-source LLM evaluation framework with pytest-style testing.

Visit

Open-source LLM observability and AI gateway in one line of code.

Visit
Votes00
PricingFreemiumFreemium
CategoryLlm ObservabilityLlm Observability
Tags
llm-evaluationtestingopen-sourceragci-cd
llm-observabilityai-gatewayopen-sourcemonitoringcaching
Best for
  • Engineering teams treating evals like tests
  • Teams gating deployments on LLM quality
  • RAG and agent developers
  • Teams wanting simple, cheap LLM logging
  • Developers self-hosting an open-source gateway
  • Cost and usage monitoring across providers
Pros
  • pytest-style workflow fits developer habits
  • 50+ research-backed metrics out of the box
  • Apache-2.0 and free to use
  • Covers RAG, agents, conversations, and safety
  • Integrates into CI/CD for quality gates
  • Extremely easy integration via a one-line base-URL swap
  • Open source under Apache 2.0 and free to self-host
  • Tiny Docker image that runs almost anywhere
  • Gateway features like caching, failover, and rate limiting cut cost and improve reliability
  • Generous free tier of 10,000 requests per month
Cons
  • Eval reliability depends on judge model/config
  • Competitive, crowded evaluation category
  • Richer collaboration features require Confident AI cloud
  • LLM-as-a-judge adds model API costs
  • Requires writing and maintaining test suites
  • Product is in maintenance mode after the Mintlify acquisition, with no roadmap
  • Long-term hosted-service viability is uncertain and migration may be needed
  • Usage-based overages mean the Pro price is a floor, not a cap
  • Short retention on lower tiers (7 days free, 30 days Pro)
  • Large price jump from Pro to Team for compliance features

Comparison generated from each tool's listing. Add or remove tools above to change it.