什么是 Agent Harness？以及如何选择最好的一个？
A raw model is a stateless text predictor. It takes in text, produces text, and then forgets everything. Picking the right model has consumed enormous engineering attention. GPT-4 vs. Claude, benchmarks, API costs, latency…
原始模型是一个无状态的文本预测器。它接收文本，生成文本，然后忘记一切。选择正确的模型消耗了大量的工程精力。GPT-4 vs. Claude, benchmarks, API costs, latency…
But model choice was always the easier problem. The harder problem is what wraps the model: that's the harness.
但是模型选择一直都是更容易的问题。更难的问题是包裹模型的东西：那就是 harness。
Anthropic, LangChain, OpenAI, and Salesforce are all converging on this term right now. That convergence is worth paying attention to. The frameworks era (LangChain, CrewAI, AutoGPT) established how to build agents. The harness era is about running them reliably, at scale, with a real team.
Anthropic、LangChain、OpenAI 和 Salesforce 目前都在趋向于这个术语。这种趋同值得关注。框架时代（LangChain、CrewAI、AutoGPT）确立了如何构建代理。harness 时代是关于可靠地、大规模地与真实团队运行它们。
This article defines what an agent harness is, how it differs from frameworks and runtimes, what it does, and how to think about harness design when you're building for production rather than a demo.
本文定义了什么是智能体 harness，它与框架和运行时的区别，它的作用，以及当你为生产环境而非演示构建时如何思考 harness 设计。
Builder.io is the visual agent harness built for teams. Same models as Claude Code and Codex — 20+ running in parallel, with a visual interface the whole team can use, not just the engineer who wrote the orchestration code. Try Builder.io free if you want to skip straight to implementation.
Builder.io 是为团队构建的视觉代理 harness。与 Claude Code 和 Codex 相同的模型 — 20 多个并行运行，具有整个团队都可以使用的视觉界面，而不仅仅是编写编排代码的工程师。试用 Builder.io 免费，如果您想直接跳到实施。
What is an agent harness?
agent harness 是什么？
An agent harness is every piece of code, configuration, and execution logic that wraps an AI model to turn it into a working agent. The model supplies the intelligence. The harness supplies state management, tool execution, memory, orchestration, and enforceable constraints. A raw model is a stateless text predictor. The harness is what makes it an agent.
agent harness 是将 AI 模型转变为工作 agent 的所有代码、配置和执...