TensorZero is an open-source stack for industrial-grade LLM applications.

• Gateway: access every LLM provider through a unified API (<1ms p99 latency)
• Observability: monitor your LLM systems, programmatically or with a UI
• Optimization: optimize your prompts, models, and inference strategies
• Evaluations: benchmark individual inferences or end-to-end workflows
• Experimentation: deploy with built-in A/B testing, fallbacks, etc.

Take what you need, adopt incrementally, and complement with other tools.