As I’ve been saying, LangChain is going to be the leader in composable AI because their tech is perfect for stitching together all of these …

As I’ve been saying, LangChain is going to be the leader in composable AI because their tech is perfect for stitching together all of these smaller specialized models. And now we have another category of models to work with: CDMs. Perfect for things like compaction and extracting useful data from context. we're excited to partner with @scaledown_team to offer support for their new constrained decision models (CDMs) in @LangChain! these cheap+fast models are tailored to specific critical tasks in the agent loop, like summarization, extraction, and classification.

TypeSafe is pushing hard on this idea of “composable AI” but LangChain has embodied composable AI since day one. With new models like Jev, w…
Another banger article from the @LangChain team! Harness evolution combined with specialist local models will be the way forward undoubtedly…
I think you should build your own harness too. Build on primitives. Models come and go.
The year of the harness 🤝 Harnesses are our most direct layer to turn a model into a great product experience for users by shaping model be…
New in Deep Agents: Harness Profiles. https://www.langchain.com/blog/tuning-deep-agents-different-models ✅ Model-specific profiles to adjust…

Source: Harrison Chase (X) | 2026-10-14

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