--- title: "switching model providers is easy\n\nswitching harnesses is less so\n\nmodel providers want to lock you ..." source_name: "Harrison Chase(@hwchase17)" original_url: "https://x.com/hwchase17/status/2050470473310572849" canonical_url: "https://www.traeai.com/articles/a7399dd0-9f8b-48a9-a963-6dde3b62bbd3" content_type: "tweet" language: "中文" score: 7.8 tags: ["LLM","AI infrastructure","LangChain","vendor lock-in","open standards"] published_at: "2026-05-02T07:00:31+00:00" created_at: "2026-05-02T11:08:32.948281+00:00" --- # switching model providers is easy switching harnesses is less so model providers want to lock you ... Canonical URL: https://www.traeai.com/articles/a7399dd0-9f8b-48a9-a963-6dde3b62bbd3 Original source: https://x.com/hwchase17/status/2050470473310572849 ## Summary Harrison Chase指出切换大模型供应商容易，但切换AI应用层的‘harness’（如LangChain）更难；厂商正通过私有harness锁定用户，亟需开放标准。 ## Key Takeaways - 模型提供商易替换，但harness层迁移成本高、生态碎片化 - 厂商将harness作为锁定用户的手段，而非单纯资源管控工具 - 推动开放、可互换的harness标准是避免厂商锁定的关键路径 ## Content Title: Harrison Chase on X: "switching model providers is easy switching harnesses is less so model providers want to lock you in via harness we need open harnesses!" / X URL Source: http://x.com/hwchase17/status/2050470473310572849 Markdown Content: # Harrison Chase on X: "switching model providers is easy switching harnesses is less so model providers want to lock you in via harness we need open harnesses!" / X Don’t miss what’s happening People on X are the first to know. [Log in](http://x.com/login) [Sign up](http://x.com/i/flow/signup) # [](http://x.com/) ## Post See new posts # Conversation [![Image 2](https://pbs.twimg.com/profile_images/1569345624935485442/R67C4wCQ_normal.jpg)](http://x.com/hwchase17) [Harrison Chase ![Image 3](https://pbs.twimg.com/profile_images/2028336270431453184/jRRpLAdG_bigger.jpg)](http://x.com/hwchase17) [@hwchase17](http://x.com/hwchase17) switching model providers is easy switching harnesses is less so model providers want to lock you in via harness we need open harnesses! Quote ![Image 4](https://pbs.twimg.com/profile_images/1165386800191303680/MIYOrXsN_mini.jpg) Kenton Varda ![Image 5](https://pbs.twimg.com/profile_images/2016613099034345472/zHWjcVEQ_bigger.jpg) @KentonVarda · 19h Replying to @c_pick TBH I don't agree with your take. I don't think Athropic's desire to control the harness is about keeping resource usage under control. They could accomplish that by just enforcing limits on the actual resource usage (which they already do) -- if some third-party harness is [7:00 AM · May 2, 2026](http://x.com/hwchase17/status/2050470473310572849) · [1,852 Views](http://x.com/hwchase17/status/2050470473310572849/analytics) 6 4 24 5 Read 6 replies ## New to X? Sign up now to get your own personalized timeline! Sign up with Apple [Create account](http://x.com/i/flow/signup) By signing up, you agree to the [Terms of Service](https://x.com/tos) and [Privacy Policy](https://x.com/privacy), including [Cookie Use.](https://help.x.com/rules-and-policies/twitter-cookies) ## Relevant people * [![Image 6](https://pbs.twimg.com/profile_images/1569345624935485442/R67C4wCQ_normal.jpg)](http://x.com/hwchase17) [Harrison Chase ![Image 7](https://pbs.twimg.com/profile_images/2028336270431453184/jRRpLAdG_bigger.jpg)](http://x.com/hwchase17) [@hwchase17](http://x.com/hwchase17) Follow Click to Follow hwchase17 [@LangChain](http://x.com/LangChain) Always hiring: [https://langchain.com/careers](https://t.co/D5Ut3loFO7) * [![Image 8](https://pbs.twimg.com/profile_images/1165386800191303680/MIYOrXsN_normal.jpg)](http://x.com/KentonVarda) [Kenton Varda ![Image 9](https://pbs.twimg.com/profile_images/2016613099034345472/zHWjcVEQ_bigger.jpg)](http://x.com/KentonVarda) [@KentonVarda](http://x.com/KentonVarda) Follow Click to Follow KentonVarda Tech lead for [@Cloudflare](http://x.com/Cloudflare) Workers, [http://sandstorm.io](https://t.co/bFUDCZ7BUc), [http://capnproto.org](https://t.co/Hjf1slmJqs), [http://lanparty.house](https://t.co/oIKxYZA4LW). ![Image 10: 🦋](https://abs.twimg.com/emoji/v2/svg/1f98b.svg)[http://kentonvarda.com](https://t.co/8QKY5gf1BK) # Trending now ## What’s happening Business and finance · Trending JP Morgan Trending in United States The Devil Wears Prada 2 Sports · Trending Jamal Murray Politics · Trending Dr. Phil [Show more](http://x.com/explore/tabs/for-you) [Terms of Service](https://x.com/tos) | [Privacy Policy](https://x.com/privacy) | [Cookie Policy](https://support.x.com/articles/20170514) | [Accessibility](https://help.x.com/resources/accessibility) | [Ads info](https://business.x.com/en/help/troubleshooting/how-twitter-ads-work.html?ref=web-twc-ao-gbl-adsinfo&utm_source=twc&utm_medium=web&utm_campaign=ao&utm_content=adsinfo) | More © 2026 X Corp.