MixEval alternatives
12 evaluation tools in the same lane as MixEval, ranked by editorial score.
Braintrust
FeaturedEval, monitor, and improve AI products end-to-end.
LangSmith
LangChain's eval + observability platform.
Weights & Biases
The ML experiment tracker, now with LLM eval features.
Helicone
Open-source LLM observability — one-line proxy install.
Humanloop
Prompt management + evals for collaborative AI teams.
PromptLayer
Lightweight prompt logging + management for OpenAI/Claude apps.
Patronus
Automated LLM evaluation for hallucinations, safety, and quality.
Agenta
Open-source LLMOps platform for prompt engineering, evaluation, and observability in one workspace.
AlpacaEval
Automatic LLM evaluator and leaderboard that benchmarks instruction-following with length-controlled win rates.
Arena AI
Head-to-head LLM battle arena with a public leaderboard for ranking AI models.
Arize AI
Enterprise observability and evaluation platform for LLM agents and generative AI applications.
Arthur
Open-source toolkit for testing, tracing, and monitoring production AI agents.