AI Engineer · AI

Agentic Search vs Vector Search for Coding Agents: We Ran the Eval — Braintrust

Same accuracy. Four times the cost. What happened when Braintrust pitted vector search against agentic search for a coding agent. Jess Wang, developer advocate at Braintrust, starts with the basics of evals: why shipping on vibes fails, the four parts of an eval (dataset, task, scorer, experiments), and how observability and evals form a flywheel. Then she runs a real one. Using fix PRs from Microsoft's TypeScript Go repo, she has Claude Code fin

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