Opik
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Open-source LLM evaluation and observability platform from Comet with built-in prompt versioning and optimization.
Opik tracks and versions sets of prompts and parameters and lets teams deploy successful versions, alongside tracing of LLM and agent activity, 30+ evaluation metrics, and LLM-as-a-judge workflows. It includes a prompt optimizer with six algorithms for automatically improving prompts and agents. The core platform is open source and self-hostable via Docker or Kubernetes, with a hosted free tier and paid enterprise versions from Comet.
Strengths
- Prompt versioning and playground integrated with tracing and evaluation in one platform
- Automated prompt optimizer with six optimization algorithms
- Open-source core that can be self-hosted locally with Docker or at scale on Kubernetes
- Hosted free tier with no credit card required
Tradeoffs
- Prompt management is one feature of a large observability platform, heavier than dedicated prompt tools
- Enterprise-scale deployment features sit behind paid Comet tiers