Alternatives to Lemma

Open-source LLM agent observability with tracing, evals, and experiments

OpenTelemetry-native observability with autonomous AI SRE Agent0 and AI Coding Insights.

Open-source AI agent observability and evaluation with full trace visibility.

Mechanistic interpretability platform to understand, debug, and design AI models

LangSmith: AI agent observability and evaluation platform for LLM apps

Open-source LLM observability for tracing, evaluating, and optimizing AI agents end-to-end.

Simulation-first LLM observability, evals, and agent testing with Langy AI engineer.

AI observability and eval engineering platform that turns offline evals into production guardrails.

Community-driven leaderboard for comparing AI models, agents, and code through real human votes.

AI observability and evals that auto-fix agent code via git

Open-source OpenTelemetry LLM observability for Python devs

Enterprise AI evaluation, observability, red teaming, and governance platform.

OpenTelemetry-native open-source AI agent evaluation and tracing

Open source AI engineering platform for building, debugging, evaluating, and monitoring agents, LLMs, and ML models.

Track, forecast, and optimize AI spend across providers.

Observe, evaluate, and deploy reliable AI agents in production with LangSmith

Simulation-based AI agent testing that catches hallucinations before production

WhyLabs open-source AI observability for privacy-preserving logging and LLM security

Collaborative LLM development platform for building, testing, and monitoring AI features.

Enterprise AI control plane for observability, guardrails, and governance of agentic AI

Open-source workspace to build, evaluate, and deploy AI agents through chat

Open-source TypeScript framework for building durable, observable AI agents and workflows.

Enterprise agent control plane: govern, simulate, and deploy AI agents from PoC to production.

Simulate, evaluate, and observe AI agents—ship reliable agents 5x faster with Maxim.

Turn plain English into production-ready Honeycomb queries for faster debugging.

ML experiment tracking and LLM development platform for teams

Open-source product OS combining analytics, session replay, feature flags, and warehouse.

Route, trace, and evaluate every LLM call from one platform

Organize, share, and collaborate on ChatGPT, Claude, and Gemini prompts in one workspace.

Open-source framework for systematic LLM evaluation, replacing vibe checks with reproducible metrics.