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Head-to-head · AI LLM Evaluation Tools

DeepEval vs Opik

  • Updated Oct 2026
  • Both researched from official sources
  • 2 checks side by side
Higher score DeepEval #1 in AI LLM Evaluation Tools 9.4/10 Free plan Free plan✓ 1 of 3 features Visit DeepEval
Opik #5 in AI LLM Evaluation Tools 9.0/10 Free plan Free plan✓ 0 of 3 features Visit Opik

DeepEval leads on 0 checks, Opik on 0, and 2 are even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreDeepEval · 9.4/10
  • Free planboth
  • Most featuresDeepEval · 1 of 3

DeepEval scores higher on our rubric for ai llm evaluation tools: 9.4 against 9.0 out of 10; our editors rank them #1 and #5.

DeepEval is the better fit for teams needing deep, code-first LLM testing. Opik is the better fit for teams wanting low-cost open-source evaluation monitoring.

  • DeepEval fits best

    Teams needing deep, code-first LLM testing

  • Opik fits best

    Teams wanting low-cost open-source evaluation monitoring

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Side by side

Feature DeepEval 9.4/10 Visit ↗ Opik 9.0/10 Visit ↗
At a glance
Editor score 9.4 9.0
Ranking #1 in AI LLM Evaluation Tools #5 in AI LLM Evaluation Tools
Best for Teams needing deep, code-first LLM testing Teams wanting low-cost open-source evaluation monitoring
Pricing model Free Free plan + paid
Starting price Free plan $19/mo
Free plan ✓ ✓
Free trial — —
Deployment Self-hosted Cloud, Self-hosted
Support Community, Docs Email, Community, Docs
Integrations 20 integrations 40+ integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features DeepEval 1/3 · Opik 0/3
Safety evaluations ✓ (best) Not checked yet
Prompt versioning Not checked yet Not checked yet
API access Not checked yet Not checked yet
Specs
Evaluation methods Not checked yet Not checked yet
Model support Not checked yet Not checked yet
Deployment Not checked yet Not checked yet
Our review
Pros
  • Pytest-style testing with multiple evaluation methods
  • Agent, tool-call, trace, span, and safety evaluations
  • Python and TypeScript SDKs with broad framework integrations
  • Open-source deployment with a full AI observability feature set
  • Traces model, tool, retrieval, and agent activity for debugging
  • Supports evaluations, prompt versioning, cost tracking, and human feedback
Cons
  • The core product is self-hosted rather than a managed workspace
  • Requires code-based workflows for evaluation and CI/CD testing
  • Shared reports and production monitoring are optional cloud capabilities
  • Self-hosting requires teams to run the open-source distribution
  • Enterprise capabilities are available through a separate custom-priced tier
  • Its broad feature set may exceed the needs of simple LLM projects
Our verdict

DeepEval is an open-source framework for evaluating AI applications, agents, RAG pipelines, chatbots, and MCP systems. It is designed for teams that want code-first testing in Python or TypeScript, with pytest-style unit tests and…

Read the review →

Opik is an open-source LLM observability and evaluation platform from Comet for teams building chatbots, RAG pipelines, and multi-step agents. It records model calls, tool invocations, retrieval steps, and agent actions, then supports…

Read the review →
  1. DeepEvalAI LLM Evaluation Tools 9.4Free plan
  2. OpikAI LLM Evaluation Tools 9.0Free plan

Strengths and trade-offs

  • DeepEval — where it wins

    • Pytest-style testing with multiple evaluation methods
    • Agent, tool-call, trace, span, and safety evaluations
    • Python and TypeScript SDKs with broad framework integrations

    Where it doesn't

    • The core product is self-hosted rather than a managed workspace
    • Requires code-based workflows for evaluation and CI/CD testing
    • Shared reports and production monitoring are optional cloud capabilities

  • Opik — where it wins

    • Open-source deployment with a full AI observability feature set
    • Traces model, tool, retrieval, and agent activity for debugging
    • Supports evaluations, prompt versioning, cost tracking, and human feedback

    Where it doesn't

    • Self-hosting requires teams to run the open-source distribution
    • Enterprise capabilities are available through a separate custom-priced tier
    • Its broad feature set may exceed the needs of simple LLM projects
  • DeepEval9.4/10 · Free plan

    A code-first toolkit for testing LLM apps, agents, tools, safety, and regressions.

    Visit DeepEvalFull verdict →
  • Opik9.0/10 · Free plan

    A low-cost evaluation platform combining tracing, testing, monitoring, and prompt workflows.

    Visit OpikFull verdict →

More comparisons

All AI LLM evaluation tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update