Evaluation
Observability, prompt testing, and quality scoring.
48 tools
Evaluation is the discipline most underinvested in by AI product teams. Choosing an eval tool early is much cheaper than retrofitting one when an LLM regression hits production.
Spans full eval + observability platforms (Braintrust, LangSmith), prompt management (Humanloop, PromptLayer), ML-broad tracking with LLM features (Weights & Biases), and proxy-based observability (Helicone).
Pick Braintrust or LangSmith for full eval + observability. Pick Humanloop if PMs need to edit prompts. Pick Helicone for a one-line install on existing OpenAI/Claude code. Pick Patronus for automated hallucination/safety evals at scale.
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.
Artificial Analysis
Independent benchmarking platform comparing AI models and inference providers across intelligence, speed, and cost.
Athina AI
Collaborative LLM evaluation and observability platform for teams shipping AI features to production.
Berkeley Function-Calling Leaderboard
Open benchmark from UC Berkeley that ranks LLMs on real-world tool-use and function-calling accuracy.
Cleanlab TLM
Trustworthiness scoring layer that flags LLM hallucinations in real time.
CompassRank
Public leaderboard from the OpenCompass project ranking open and closed LLMs across 100+ benchmarks.
Fiddler AI
Enterprise AI observability and guardrails platform for monitoring agents, LLMs, and ML models in production.
Giskard
Continuous AI red teaming platform that stress-tests LLM agents for vulnerabilities before they hit production.
Great Expectations
Open-source data quality framework for validating the datasets that feed your ML and analytics pipelines.
HoneyHive
OpenTelemetry-native observability and evaluation platform for LLM agents in production.
InfiBench
Stack Overflow-derived benchmark for evaluating code LLMs on real-world programming questions.
Inspect AI
Open-source LLM evaluation framework from the UK AI Security Institute with 200+ built-in benchmarks.
Kiln AI
Open-source workbench for building, evaluating, and fine-tuning AI agents across 190+ models.