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.
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BentoML
BentoML is an open-source Python framework for packaging, serving, and deploying machine learning and AI models as production inference services.
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.
KAI Scheduler
KAI Scheduler is an open-source Kubernetes scheduler that optimizes the allocation of GPU resources for artificial intelligence and machine learning workloads.
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.
MLflow
MLflow is an open-source platform for managing the end-to-end machine learning lifecycle, covering experiment tracking, model packaging, a model registry, deployment, and (since 2025) generative-AI…
Ray Serve
Ray Serve is a scalable, framework-agnostic model serving library built on top of the Ray (framework) distributed computing system.