Harrison Chase
Every Jev Daily story that cites Harrison Chase (@hwchase17), newest first. 5 stories since October 2026.
On X: @LangChain Always hiring: https://t.co/D5Ut3loFO7
- Harrison Chase says Open SWE routing cut cost per task 64%
Model selection moved out of the agent and into the harness, with the quality bar as the gate.
- Chase splits trajectory labeling into typed answers in LangSmith
A shape for agent evals, posted without a cost or accuracy number attached.
- Harrison Chase says LangChain already ships Breunig's Jev router
The 15 minute sketch has a packaged equivalent, and Chase thinks the interesting version runs the router more than once.
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- GPT Researcher now runs on Jev by default
Assaf Elovic says the retrieval path no longer needs embeddings at all, on an eval his own team ran.
- Sydney Runkle says a model router cut agent cost 64%
The number comes from one team's own agent, and the eval behind the no quality drop claim is never described.
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