Braintrust vs Opik

Side-by-side comparison of Braintrust and Opik: pricing, features, API access, and community ratings.

AI comparison summary

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	Braintrust The AI observability platform for building quality AI products at scale Visit	Opik Open-source AI observability & evaluation platform for the agentic era Visit
Category	AI observability	AI observability
Pricing	Freemium	Freemium
Starting price
Free tier
Audience	All audiences	Technical
API available
Open source
Self-hostable
Model provider
Founded
Headquarters	US	United States
Key strengths	·Real-time trace inspection for prompts, responses, and tool calls ·Automated pattern discovery via Topics clustering ·Flexible eval scoring with LLMs, code, or human reviewers ·Custom-built Brainstore database optimized for AI trace data at scale	·End-to-end agent trace logging and visualization ·30+ LLM-as-a-Judge evaluation metrics ·Automated code fix suggestions via Ollie coding assistant ·True open-source with self-hosting support