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Stay free if you only need full llm unit and regression testing suite and evals in development and ci/cd. Upgrade if you need everything in starter and no-code ai evaluation workflows. Most solo builders can start free.
Why it matters: Python-first — Node/TS teams need to shell out or wrap the library
Available from: Starter
Why it matters: G-Eval and other judge metrics require LLM API tokens you pay for separately
Available from: Starter
Why it matters: Team/Enterprise pricing not published — sales conversation required
Available from: Starter
Why it matters: Free tier has limited cloud dashboards; paid tier unlocks the collaboration surface
Available from: Starter
Why it matters: Metric quality still depends on the judge model you configure
Available from: Starter
Why it matters: Advanced feature not available in free plan.
Available from: Starter
DeepEval is broader — it covers RAG metrics (contextual precision, recall, faithfulness) plus agent tool use evaluation, conversational quality metrics, bias/toxicity detection, and red-teaming. RAGAS focuses specifically on RAG pipeline evaluation with deeper RAG-specific metrics. If you only need RAG evaluation, RAGAS may be sufficient. For comprehensive agent and LLM testing, DeepEval covers more ground.
Yes. DeepEval includes conversational metrics for coherence, topic adherence, and knowledge retention across multiple conversation turns. The chat simulation feature in Confident AI Premium can generate multi-turn test conversations automatically.
Yes. DeepEval evaluates inputs and outputs regardless of framework. It works with LangChain, CrewAI, LlamaIndex, OpenAI Agents SDK, custom agents, and any LLM application that produces text outputs.
DeepEval metrics are validated against human judgment benchmarks. Accuracy varies by metric and evaluator model — using stronger models (GPT-4, Claude) as evaluators produces more accurate scores. The framework's 50+ metrics are research-backed and regularly updated based on academic findings.
DeepEval is the free, open-source evaluation framework for running LLM tests locally or in CI. Confident AI is the commercial cloud platform built by the same team — it adds collaboration, dataset management, LLM tracing, real-time monitoring, alerting, and dashboards. DeepEval works standalone; Confident AI layers on top for team and production use.
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Last verified March 2026