Building AI apps
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AI tools for lLM testing
7 tools that do lLM testing · best fit first, then monthly traffic · part of 3,707 live tools
Langfuse is an open-source platform for observability and evaluation of AI agents and LLM applications.
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OpenRouter Chat is a browser playground for comparing language models on a single prompt.
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Arize Phoenix is an open-source platform for AI observability and evaluation, built by Arize.
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Weights & Biases is an AI developer platform for tracking, evaluating and debugging machine learning models and LLM applications.
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Artificial Analysis is an independent AI benchmarking service that compares models and API hosting providers on quality, price, output speed and latency.
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LMArena, now branded Arena, is a place to chat with, compare and vote on AI models.
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