Best LangSmith alternatives in 2026
8 direct alternatives to LangSmith, compared on pricing, features, and best-for use cases. Pick the right replacement without the marketing fluff.
Why people leave LangSmith
LangSmith is an observability platform designed to help teams build and ship reliable AI agents and LLM applications. It provides robust tracing capabilities to quickly debug non-deterministic LLM app behavior, allowing developers to see step-by-step what their agent is doing and…
Common reasons teams switch: pricing as you scale, missing integrations, performance, or a feature gap your team has hit. The alternatives below cover the same core job (ai observability) with different trade-offs.
8 alternatives to LangSmith
Ranked by editorial score and direct relevance to LangSmith.
- 1
SigNoz
FreemiumOpen-source APM and observability
Direct alternativeCompare LangSmith vs SigNoz → - 2
Axiom
FreemiumServerless log management and observability platform
Direct alternativeCompare LangSmith vs Axiom → - 3
New Relic
FreemiumObservability made simple
Direct alternativeCompare LangSmith vs New Relic → - 4
Jaeger
FreeOpen-source distributed tracing system
Direct alternativeCompare LangSmith vs Jaeger → - 5
OpenTelemetry
FreeObservability framework for cloud-native software
Direct alternativeCompare LangSmith vs OpenTelemetry → - 6
Uptrace
PaidOpen-source APM with distributed tracing
Direct alternativeCompare LangSmith vs Uptrace → - 7
Lunatrace
FreemiumLunatrace
Direct alternativeCompare LangSmith vs Lunatrace → - 8
Keywords AI
FreemiumThe AI gateway with built-in observability for LLM applications.
Direct alternativeCompare LangSmith vs Keywords AI →
Side-by-side comparisons
In-depth comparison pages for LangSmith versus each alternative.
Still considering LangSmith?
See the full review, pricing breakdown, and community feedback before you decide.