langsmith vs. OPIK
Opik & LangSmith: LLM Evaluation Platform Comparison
Compare Opik & LangSmith’s features and functionalities side by side to find the platform that best supports your AI development requirements.
Opik vs. Langsmith Feature Comparison
Opik and LangSmith are platforms used for evaluation, observability, and monitoring of AI applications. Opik is designed as a framework-agnostic, open-source platform that emphasizes flexibility, advanced evaluation, and production-readiness. LangSmith shines in its native integration with the LangChain ecosystem, offering a smooth experience when paired with LangChain and OpenAI tools.
| Feature | Details | Opik | LangSmith |
|---|---|---|---|
| LLM Tracing | Log LLM calls, responses, metadata, & user feedback scores |  Yes | Yes |
| Trace & Span Analysis | Annotate & score logs for debugging | Yes | Yes |
| Multi-Turn Conversation Logging | Group & analyze conversation threads | Yes | Partial |
| Human Feedback for Conversation Threads | Tap subject matter experts to review & annotate multi-turn conversations | Yes |  No |
| Comprehensive LLM Evaluation Metrics Library | Variety of built-in metrics (heuristic & LLM-as-a-judge) to auto-score LLM output datasets | Yes | Partial |
| Thread-Level Evaluation | Auto-score entire conversations between humans and agents | Yes | No |
| Automated Prompt Optimization | Run algorithms to create & enhance elite prompts | Yes | No |
| Multi-Prompt Optimization | Automate enhancement of multiple LLM prompts & agents | Yes | No |
| Agent Framework Integrations | Native integrations with popular agent frameworks (LangGraph, LLamaIndex, & more) | Yes | Partial |
| Agent Execution Tracking | Track agent execution, tool calling, etc. | Yes | Partial |
| Comprehensive Model Provider & LLM Framework Integrations | Native integrations with the most model providers & LLM frameworks | Yes | Partial |
| Guardrails | Detect & block unwanted content like PII for user safety | Yes | No |
These Are Just the Highlights
Explore the full range of Opik’s features and capabilities in our developer documentation or check out the full repo on GitHub.
Opik’s Advantages
Opik differentiates itself through its agent optimizer, support for multi-turn conversations and agent frameworks, advanced multi-turn conversation capabilities, true open-source nature, and native guardrails for self-hosted deployments.
Advanced Prompt Optimization
Opik’s Agent Optimizer offers six unique optimization algorithms to generate and refine the best prompts for each step in your agentic system.
True Framework Freedom
Support for 12+ agent frameworks means you’re never locked into a specific ecosystem. Integrate Opik seamlessly with CrewAI, AutoGen, and more.
Production-Ready Multi-Turn
Opik provides comprehensive multi-turn conversation handling with logging, human feedback, and evaluation metrics that are effective in production.
Open-Source Advantage
No vendor lock-in, transparent development, and community contributions. Host it yourself or use our cloud offering.
Built-In Safety & Security
Opik offers native guardrails for self-hosted deployments, to ensure your AI systems stay compliant and safe from risks inherent in LLMs.
Truly Scalable Performance
Opik is built for speed, even at massive scale in production, with a fast UI, efficient ingestion, and responsive workflows that don’t slow you down.
LangSmith’s Advantages
LangSmith differentiates itself through a deep LangGraph Studio integration, strong annotation capabilities, advanced prompt testing through the prompt playground, and user-friendly workflows within its native ecosystem.
LangGraph Studio Integration
LangSmith delivers a deep integration with LangGraph Studio, providing users with a visual environment to build, test and iterate on agents directly.
Ease of Use Within Ecosystem
LangSmith works seamlessly with the LangChain & OpenAI ecosystem, providing user-friendly workflows and automation capabilities.
Advanced Annotation UI
LangSmith’s LLM trace annotation features offer flexibility, precision, and intuitive cross-functional collaboration for smooth application debugging.
Ready to Upgrade Your AI Development Workflows?
Join the growing number of developers who’ve turned to Opik for superior performance, flexibility, and advanced features when building AI applications.