Best LangSmith Alternatives in 2026
We've reviewed and compared 5 alternatives to LangSmith in the AI Testing & DevOps category. Popular alternatives include Athina AI, Deepchecks, Fairlearn, and 2 more.
Athina AI
Collaborative platform to build, test, and monitor AI applications.
AI Project Management
Deepchecks
Continuous validation & monitoring for ML models and data.
AI Testing & DevOps
Fairlearn
A toolkit to assess and improve fairness in AI systems.
AI Testing & DevOps
Phoenix by Arize
Open-source platform for tracing, evaluating, and monitoring large language model applications.
AI Testing & DevOps
BugBot
Automated PR code reviewer by Cursor that catches bugs before merge
AI Testing & DevOpsFrequently Asked Questions
What are the best LangSmith alternatives?
The top alternatives to LangSmith include Athina AI, Deepchecks, Fairlearn, Phoenix by Arize, BugBot. Each tool has been reviewed for features, pricing, and ease of use.
Is there a free alternative to LangSmith?
Most LangSmith alternatives offer free trials or freemium plans. Check individual tool pages for current pricing.
How do I choose the right LangSmith alternative?
Consider your specific use case, budget, team size, and required integrations. Compare features and pricing on each tool's page, and look for free trials before committing.