tensorzero

TensorZero is an open-source LLMOps platform that unifies an LLM gateway, observability, evaluation, optimization, and experimentation.

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Overview

TensorZero是一个开源的LLMOps平台,通过统一的架构集成了LLM网关、可观测性、评估、优化和实验功能。作为高性能的LLM网关,它提供小于1ms的p99延迟,支持通过统一API访问所有主要LLM提供商。该平台将推理数据和反馈存储在用户数据库中,支持程序化访问和UI界面操作。TensorZero内置评估框架,可使用启发式规则、LLM判断器等方法对单个推理或端到端工作流进行基准测试。通过收集指标和人工反馈,平台能够优化提示词、模型选择和推理策略。实验功能包括A/B测试、路由、故障转移和重试机制,确保可靠部署。该平台设计为渐进式采用,与OpenAI SDK、OpenTelemetry和主要LLM提供商兼容。TensorZero Autopilot是其旗舰功能,作为自动化AI工程师,能分析LLM可观测数据、设置评估、优化提示和模型,并运行A/B测试,显著提升LLM代理在多样化任务中的性能。目前被从前沿AI初创公司到财富10强企业广泛使用,处理全球约1%的LLM API调用量,证明了其在生产环境中的可靠性和规模化能力。

Deep Analysis

Key Differentiator

Only LLM gateway that combines inference, observability, evaluation, and optimization in one Rust-based system with data flywheel — vs LiteLLM (routing only) or Langfuse (observability only)

Capabilities

  • Unified LLM gateway with <1ms p99 latency (Rust)
  • Full observability with inference/feedback storage
  • LLM evaluation with heuristic and LLM judges
  • Prompt optimization (GEPA algorithm)
  • Model fine-tuning (SFT, RLHF)
  • A/B testing, routing, fallbacks, retries
  • TensorZero Autopilot (automated AI engineer)
  • OpenAI SDK compatible API

🔗 Integrations

OpenAIAnthropicAWS BedrockAzureGoogleDeepSeekFireworksGroqMistralTogether AIvLLMSGLangOpenTelemetryPrometheus

Best For

  • Teams wanting a unified LLM gateway with built-in optimization feedback loop
  • Production systems needing <1ms latency overhead at scale
  • Organizations wanting to continuously improve LLM performance from production data

Not Ideal For

  • Simple prototypes not needing optimization or observability
  • Teams wanting a fully managed cloud service

Languages

Rust (gateway)Python (optimization)

Deployment

Docker containerSelf-hosted

Pricing Detail

Free: Open source, full gateway + optimization free
Paid: Enterprise features and Autopilot (pricing not public)

Known Limitations

  • Requires self-hosting (no managed cloud yet)
  • Configuration-driven setup has learning curve
  • Relatively new, smaller ecosystem than LiteLLM
  • Autopilot is a premium feature

Pros

  • + 高性能统一网关,支持所有主要LLM提供商,延迟低于1ms p99
  • + 完整的LLMOps工具链,集成可观测性、评估、优化和A/B测试功能
  • + TensorZero Autopilot自动化AI工程师能显著提升LLM代理性能表现

Cons

  • - 作为综合性平台,初期学习曲线较陡峭,需要理解多个组件
  • - 开源项目依赖社区支持,企业级技术支持可能有限
  • - 需要额外的基础设施部署和维护成本

Use Cases

  • 构建生产级LLM应用,需要统一管理多个模型提供商和A/B测试功能
  • 优化现有LLM工作流性能,通过自动化评估和提示词优化提升效果
  • 企业级LLM部署,需要完整的可观测性、监控和实验管理能力

Getting Started

1. 按照官方部署指南安装TensorZero Gateway并连接数据库;2. 配置LLM提供商和模型设置,创建基础的推理配置;3. 集成OpenAI SDK或直接调用API开始第一次推理请求

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