3.4.0 v6.4.1

Name: streamdown
Author: vercel

vercel/streamdownSep 25, 2026 → Sep 19, 20260 days between releases

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Analyzing what changed between 3.4.0 and v6.4.1. This page updates automatically — usually within a minute.

The Two Releases

3.4.0

Sep 25, 2026· 27 days ago

DSPy 3.4.0 introduces Jev integration via TypeSafe with new decision types (Noul, Choice, Score), native LM engines replacing experimental types, and async ReActV2 support. It marks the LM transition release with deprecation warnings for legacy integrations.

Full release notes

v6.4.1

Sep 19, 2026· 1 month ago

v6.4.1 introduces the 'diagnosing-superpowers' skill, rebuilds 'executing-plans' as Native execution for better performance, and adds support for three new harnesses: OpenCode 2.0, Muse, and Qwen Code.

Full release notes