Comet - The AI Developer Platform
The Fastest Path to Agents That Work
Opik connects observability to action, automatically turning trace data and eval results into code fixes. Your agent keeps evolving and doesn’t make the same mistake twice.
Trusted by over 150,000 developers and thousands of companies
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Log every step your agent takes
Traces give you total LLM observability to visualize and understand what’s happening across complex GenAI systems, from context retrieval and tool selection to user feedback scores and more.
Annotate & debug individual traces
Review your traces to label what’s working, what’s not, and pinpoint where to iterate and improve. Invite SMEs to collaborate on human review directly inside the platform.
Evaluate performance at scale
Auto-score large sets of traces with 30+ LLM-as-a-judge metrics for answer relevance, context precision, hallucination detection, and more — or try Opik’s new Test Suites for a simplified pass/fail workflow.
Iterate & improve with Ollie
Ollie, Opik’s powerful built-in coding agent, analyzes your traces and test outcomes, identifies fixes, and writes them directly to your own agent’s codebase, with version control and regression testing.
Monitor & manage agents in production
Opik extends observability and online evaluation across your agent’s production footprint to help meet governance requirements, track model costs, and ensure consistent performance in front of real users.
An End-to-End AI Evaluation Platform
Comet’s end-to-end model evaluation platform for developers focuses on shipping AI features, including open-source LLM observability, application testing and optimization, and coding agent cost tracking.
Opik: Track & Optimize Coding Agent Spend
Get full visibility into engineering teams’ Claude Code and Codex usage with Cost Intelligence in Opik. Eliminate wasted tokens and gain efficiency across MCP installs, skills, model selection, context retrieval, and configurations.
Opik: Log & Evaluate Your Application’s LLM Calls
Opik provides comprehensive LLM observability so you can confidently test, debug, and monitor your GenAI apps and agents, from application-level unit testing down to individual system prompts and user inputs.
Opik: Optimize Prompts & Agentic Systems
With your application’s LLM calls and responses logged, you can bring in expert reviewers for annotation, score using built-in eval metrics, and even automate prompt engineering for complex multi-step agents.
MLOps: Track & Compare Model Training Runs
Comet Experiment Management gives you the tools to ensure your models are explainable and reproducible, with custom visualizations, model versioning, dataset management, production monitoring, and more.
“LLMs are black boxes. We don’t know what is going on inside them. We needed a solution that allowed us to see how our models behaved, and Opik gives us the ability to understand what went wrong, and share that with the team to debug and iterate faster.”
DMITRII KRASNOV
ENGINEERING MANAGER, ZENCODER
The Opik Difference
Not all GenAI observability and evaluation platforms are built the same. Opik is both truly open source, and powered by Comet’s enterprise-grade infrastructure for reliable, trustworthy performance at scale.
Log Thousands of LLM Traces, Fast
Traces appear in the Opik platform ready for debugging almost instantly — even at high volumes.
Enterprise-Grade Reliability & Security
Opik is backed by the Comet platform and built to the standards of the world’s largest organizations.
Flexible Hosting & Deployment Options
Self-host the OSS version, try Opik in the cloud, or talk to us about custom deployment options.
Easy Integration
Add just a few lines of code to your project and automatically start tracking LLM app and agent activity with Opik, or code, hyperparameters, model predictions, and more with Comet’s MLOps platform.
Opik LLM Evaluation
Any LLMLlamaIndexLangChainOpenAI
ML Experiment Management
PytorchPytorch LightningHugging FaceKerasTensorFlowScikit-learnXGBoostAny Framework
Built for Enterprise, Driven by Community
Comet’s end-to-end evaluation platform is trusted by innovative data scientists, ML practitioners, and engineers in the most demanding enterprise environments.