Best LangSmith Alternatives in 2026
Looking for alternatives to LangSmith? We've compiled 20 similar AI tools with comparable features, so you can compare options and find the right fit. Top-rated picks include Nomic Atlas, Patronus AI, Unstructured.
Top LangSmith Alternatives
- Nomic Atlas (Freemium) Compare with LangSmith
- Patronus AI (Paid) Compare with LangSmith
- Unstructured (Freemium) Compare with LangSmith
- turbopuffer (Paid) Compare with LangSmith
- Beam Cloud (Freemium) Compare with LangSmith
- Poolside (Paid) Compare with LangSmith
- Letta (Freemium) Compare with LangSmith
- Sarvam AI (Freemium) Compare with LangSmith
- Liquid AI (Freemium) Compare with LangSmith
- Predibase (Paid) Compare with LangSmith
- Tensorlake (Freemium) Compare with LangSmith
- Reducto (Paid) Compare with LangSmith
- Trieve (Freemium) Compare with LangSmith
- Ragie (Freemium) Compare with LangSmith
- LlamaIndex (Free) — Data framework for building LLM applications with custom knowledge. Compare with LangSmith
- Semantic Kernel (Free) — Microsoft open-source SDK for integrating LLMs into applications. Compare with LangSmith
- Vellum AI (Freemium) — AI development platform for building, testing, and deploying LLM workflows. Compare with LangSmith
- Portkey AI (Freemium) — AI gateway for managing LLM reliability, routing, and observability. Compare with LangSmith
- Mistral Vibe (formerly Le Chat) (Freemium) — Mistral AI's conversational chat interface for fast, multilingual AI interactions. Compare with LangSmith
- Braintrust (Freemium) — AI evaluation and prompt management platform Compare with LangSmith
Pricing Overview
Of the 20 LangSmith alternatives listed here, 15 offer free or freemium plans and 5 are paid tools. See free LangSmith alternatives.
Frequently Asked Questions
What are the best LangSmith alternatives?
Top LangSmith alternatives include Nomic Atlas, Patronus AI, Unstructured. Browse all 20 options above to compare features and pricing.
Are there free alternatives to LangSmith?
Yes. Filter by "Free" or "Freemium" above — 15 free options are listed.
How do I choose between LangSmith alternatives?
Compare each tool's pricing, key features, and use-cases. Use the compare links above to see side-by-side breakdowns.