Source details
- Original source
- Harrison Chase
- Published
- 2026-05-29
- Primary topic
- Foundation Models
Why it matters
Model launches, benchmark jumps, API upgrades, context window changes, and frontier LLM competition. This item originated as a short-form social post, so the context blocks below help expand it into tools, models, and evaluation guides.
What happened
Different models need different prompts, sometimes tools “Harness profiles” are how we do that in deepagents LangChain (@LangChain) Deep Agents v0.6 makes harness profiles a first-class abstraction. Now, you can get production-grade performance from models like @Kimi_Moonshot , @Alibaba_Qwen , and @DeepSeek_ai at 20x+ lower cost than closed frontier APIs. More on tuning: langchain.com/blog/tuning-de… — https://nitter.net/LangChain/status/2060349231722852680#m
What to do next
Compare the hosted model pages first, then check the related tools and buyer guides before changing workflow standards.
Different models need different prompts, sometimes tools “Harness profiles” are how we do that in deepagents LangChain (@LangChain) Deep Agents v0.6 makes harness profiles a first-class abstraction. Now, you can get production-grade performance from models like @Kimi_Moonshot , @Alibaba_Qwen , and @DeepSeek_ai at 20x+ lower cost than closed frontier APIs. More on tuning: langchain.com/blog/tuning-de… — https://nitter.net/LangChain/status/2060349231722852680#m
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