Top alternatives to LangSmith

LangSmith is a product in AI Infra & Developer Tools. Here are the strongest alternatives, ranked by an explainable 4-dimension score.

● Data-backed · 525 nodes · updated 2026-09-13
#AlternativeOverallPop.Mom.Cred.Eco.
1Patronus AI · Eval
An evaluation and testing platform that automatically scores, monitors and stress-tests AI systems and agents.
7874907470
2Lakera · Eval
An AI security company protecting LLM applications from prompt injection and other GenAI threats.
6847847570
3Braintrust · Eval
An end-to-end platform for evaluating, testing and iterating on LLM applications in development and production.
7149907470
4Galileo · Eval
An evaluation and observability platform for measuring and improving the reliability of generative AI apps.
6845847570
5Guardrails AI · Eval
An open-source framework for adding validation, safety checks and structured-output guardrails to LLMs.
6664726860
6Humanloop · Eval
An LLM development platform for managing prompts, evaluations and monitoring of AI applications.
5741636960
7claude-mem · MLOps
Persistent Context Across Sessions for Every Agent – Captures everything your agent does during sessions, compresses it with AI, and injects relevant context back into future sessions. Works with Claude Code, OpenClaw, Codex, Gemini, Hermes, Copilot, OpenCode + More
8674998685
8LlamaFactory · MLOps
Unified Efficient Fine-Tuning of 100+ LLMs & VLMs (ACL 2024)
8674998584
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