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Sweep 27 Oct 2026 · 19:04Z Build v2.1.312 531 read Stable v2.1.308 Latest v2.1.312 Next v2.1.312 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.311 ·

Headless mode can send plain text pieces directly while streaming

Headless runs gain a faster path that sends plain pieces of text output straight away, and a way to mark a turn as refused

Under the hood Internal Changes
JSON All of v2.1.311
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SDKArea: what it touches
Internal ChangesKind: in v2.1.311,
Internal ChangesSection of the release
What

In headless mode, where Claude Code runs without the interactive screen, a turn can now send plain pieces of streamed text straight out instead of through the usual path. The end-of-run report counts how many pieces went each way.

A turn can also now be marked as refused when it takes the place of the first request.

Why

This is a quicker way to stream output for programs that use Claude Code through the SDK or remotely.

See this entry in the whole of v2.1.311 →

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