Arize Phoenix
Arize Phoenix is an open-source AI observability and evaluation platform developed by Arize AI for tracing, evaluating, and debugging large language model (LLM) and agent applications.
Model Evaluation
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Helicone
Helicone is an open-source LLM observability platform and AI gateway founded in 2023 by Justin Torre, Cole Gottdank, Barak Oshri, and Scott Nguyen.
LM Evaluation Harness
LM Evaluation Harness (the Language Model Evaluation Harness, often abbreviated lm-eval or written lm-evaluation-harness) is an open-source software framework for measuring the performance of large language…
Langfuse
Langfuse is an open-source LLM engineering platform that provides observability, tracing, prompt management, evaluation, and dataset tooling for applications built on large language models.