Cross-functional AI product teams that need engineers and non-engineers reviewing the same traces.

Freeplay is a hosted platform for prompt management, batch evaluation, experimentation, and production observability of LLM applications.

Accessed via Freeplay's dashboard and SDK integrated into an application's LLM call path.

Founded in 2022, with end-to-end agent evaluation and observability features added through 2025 and 2026.

It exists to close the loop between prompt experimentation, human review, and live production monitoring.

Supports OpenAI, Anthropic, Google Vertex, AWS Bedrock, and Groq as model backends.

SaaS, proprietary, requires an API key; commercial pricing; LLM call data logged to Freeplay's cloud.