Opik
coding
Open-source LLM evaluation, tracing, and observability by Comet.
Pricing
Free plan
Rating
—
Votes
0
Head-to-head comparison
Opik vs Braintrust
Compare Opik and Braintrust side by side across pricing, features, ratings, pros, cons, best-fit use cases, and alternatives.
Braintrust
coding
Eval-first evaluation and observability platform for AI applications.
Pricing
Free plan
Rating
—
Votes
0
Feature comparison
Feature
Opik
Braintrust
Category
coding
coding
Pricing
Free plan
Free plan
Free plan
API access
Mobile app
Browser extension
Team collaboration
Custom training
Self-hosted option
Offline mode
Multi-language support
Opik pros and cons
Full platform is Apache-2.0 and free to self-host
Combines tracing and evaluation in one tool
LLM-as-a-judge and many automated metrics
Fast-growing, widely adopted open-source project
Crowded, competitive category
Self-hosting requires running infrastructure
Managed cloud limits (spans, seats) on lower tiers
Braintrust pros and cons
Deep, eval-first feature set with scorers, experiments, and statistical rigor
Strong CI/CD integration to catch regressions before deploy
Usage-based pricing with unlimited users, so no per-seat penalty
Powerful playground for prompt iteration and comparison
Not open source; source-available and hosted model
Self-hosting locked to the Enterprise tier and a license key
Big price jump from free to $249 per month
Which one should you choose?
Best overall signal
Opik
Selected using Toolglade popularity signals such as views and votes.
Best value signal
Opik
Selected using free-plan availability and engagement signals.
Best for
Opik
- LLM evaluation
- agent tracing
- prompt management
- production LLM monitoring
- Teams wanting open-source eval plus tracing
Braintrust
- systematic LLM evaluation
- CI/CD quality gates
- prompt comparison and iteration
- production tracing to eval loops
- Teams making evaluation a first-class part of development
FAQ
Is Opik better than Braintrust?
It depends on your use case. Compare category fit, pricing, feature availability, and ratings before choosing.
Which tool has a free plan?
Opik and Braintrust offer a free plan based on current Toolglade data.