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forever
None - fully open source
month
Free tier available, usage-based pricing for advanced features
Pricing sourced from DeepEval · Last verified March 2026
Yes, DeepEval is completely free and open-source under Apache 2.0 license. All evaluation metrics, pytest integration, tracing, and core features are included at no cost with no usage restrictions. Confident AI offers an optional cloud platform for team collaboration and advanced analytics.
DeepEval offers the most comprehensive metric library (50+) compared to competitors, with unique pytest integration familiar to developers. Unlike LangSmith's subscription model, DeepEval is completely free. It provides both end-to-end and component-level evaluation, while maintaining open-source transparency and avoiding vendor lock-in.
DeepEval requires Python programming knowledge and familiarity with pytest testing framework. It's designed for developers and technical teams who want to integrate LLM evaluation into their development workflow, not for non-technical users seeking no-code solutions.
Yes, DeepEval supports comprehensive evaluation of RAG systems, chatbots, AI agents, multi-turn conversations, multimodal applications, and virtually any LLM-powered application. It provides specialized metrics for each use case and supports both end-to-end and component-level evaluation.
DeepEval integrates with all major LLM providers (OpenAI, Anthropic, Google, Azure, Ollama) and frameworks (LangChain, LangGraph, CrewAI, Pydantic AI, LlamaIndex). You can use different models for evaluation than those being tested, and it supports custom LLM implementations.
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