DSPy 3.5 released: framework is now 85% smaller and production-ready
dbreunig · x · 2026-11-11
The DSPy team released DSPy 3.5, making the framework 85% smaller, faster, and more reliable out of the box. The accompanying post notes the Signature interface has stayed stable since 2023 — programs from 2022 still run on today's models — while optimization has grown from few-shot selection to fine-tuning, prompt optimization, code rewrites, and decision-model threshold tuning. The release cleans up accumulated cruft with a few breaking changes; an early enterprise tester said "3.5 solves all my problems getting DSPy into production."
Related event: DSPy 3.5 Released with 85% Smaller Footprint(2 posts)→
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