Braintrust vs Opik: Observability, Prompts & Evals Comparison
Compare Braintrust and Opik side by side. Both are tools in the Observability, Prompts & Evals category.
Updated March 10, 2026
The short answer
Choose Braintrust if custom-built Brainstore database optimized for AI data with fast full-text search and low latency.
Choose Opik if production-ready.
Want to compare Braintrust and Opik on your own traffic?
Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 250+ models through one gateway. Free tier covers 10K traces per month. Setup in 5 minutes, no credit card.
Quick Comparison
| Category | Observability, Prompts & Evals | Observability, Prompts & Evals |
| Pricing | Freemium | — |
| Best For | AI teams who need a unified platform for logging, evaluating, and improving LLM applications | — |
| Website | braintrust.dev | comet.com |
| Key Features |
| — |
| Use Cases |
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Pros & Cons: Braintrust vs Opik
- +Custom-built Brainstore database optimized for AI data with fast full-text search and low latency
- +Framework agnostic with native SDKs for multiple languages and no vendor lock-in
- +Comprehensive security and compliance certifications including SOC 2 Type II, GDPR, and HIPAA
- +AI-assisted Loop Agent for automated optimization of prompts and evaluations
- +Strong backing with $80M Series B funding and customers including Vercel, Notion, Coursera, and Dropbox
- −Relatively new platform founded in 2022, less mature than some competitors
- −Pro plan at $249/month may be expensive for smaller teams or individual developers
- −Limited public information about advanced features and customization options
- +Production-ready
- +Good performance
- +Active development
- −Pricing varies
- −Setup required
Pricing: Braintrust vs Opik
- · Core features
- · Community support
- · Advanced features
- · Priority support
- · Custom solutions
- · SLA guarantees
When to Choose Braintrust vs Opik
- Iterating on prompts with real production data
- Running evaluations across model versions
- Building golden datasets from production traffic
About Braintrust
Braintrust is an AI observability and evaluation platform that helps teams build, monitor, and improve AI applications in production. The platform enables users to turn production traces into evaluations, compare prompts and models, and improve quality with every release. Built on a custom database called Brainstore designed specifically for AI data complexity, Braintrust provides real-time trace inspection, performance monitoring for latency, cost, and quality, along with automated alerts. The platform features Loop Agent for AI-assisted optimization of prompts, scorers, and datasets, and offers framework-agnostic native SDKs for Python, TypeScript, Go, Ruby, and C# with no vendor lock-in. Braintrust is SOC 2 Type II, GDPR, and HIPAA compliant with SSO/SAML integration and granular role-based access control.
About Opik
AI platform providing comprehensive solutions for enterprise applications. The platform provides essential capabilities for modern AI applications with focus on scalability and reliability.
What is Observability, Prompts & Evals?
Tools for monitoring LLM applications in production, managing and versioning prompts, and evaluating model outputs. Includes tracing, logging, cost tracking, prompt engineering platforms, automated evaluation frameworks, and human annotation workflows.
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One platform for routing, observability, tracing, and evals across every LLM provider.