Observability & Tracing

TensorZero

Open-source LLMOps stack unifying gateway, observability, evaluations, optimization and experimentation.

Website ↗ GitHub ↗
CategoryObservability & Tracing
Open sourceYes
Self-hostableYes
Pricing modelfree
Pricing notesFully open source (Rust gateway + ClickHouse storage)
Framework integrationsOpenAI SDK, Anthropic, vLLM
Funding / ownership$7.3M seed (2025)

Pricing/feature source: https://github.com/tensorzero/tensorzero