Free Opik Alternatives in 2026

Looking for free alternatives to Opik? We've gathered 8 similar AI tools, including 1 with free or freemium plans, so you can compare no-cost options and find the right fit. Top free picks include Promptfoo.

Best Free Opik Alternatives

  1. Promptfoo (Free) (Free option) — Open-source CLI and library for testing and evaluating LLM prompts. More Opik alternatives
  2. Agent QA (Pricing varies) — Write web and mobile tests in natural language. More Opik alternatives
  3. Ragas (Pricing varies) — Evaluate AI application behavior with a testing framework. More Opik alternatives
  4. Testim (Pricing varies) — Create and maintain automated UI tests with AI assistance. More Opik alternatives
  5. Evidently AI (Pricing varies) — Evaluate and monitor language models and predictive AI systems. More Opik alternatives
  6. Keploy (Pricing varies) — Test code changes against captured API behavior and dependencies. More Opik alternatives
  7. LLM Comparator (Pricing varies) — Compare model responses with an interactive evaluation interface. More Opik alternatives
  8. TruLens (Pricing varies) — Trace AI applications and score their behavior with evaluation tools. More Opik alternatives

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