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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.299 ·

Remote byte-stream idle timeout default now applies only to the Anthropic API

The remotely supplied default for the byte-stream idle timeout is now used only for the Anthropic API, not Bedrock, Vertex or other providers

You'll notice Improvements
JSON All of v2.1.299
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
API RequestsArea: what it touches
ImprovementsKind: in v2.1.299,
ImprovementsSection of the release

Unclear It is not settled what timeout applies on providers other than the Anthropic API now.

What

The byte-stream idle timeout is how long Claude Code waits when a reply arrives with no new data before treating the stream as stalled. You can also set it yourself with CLAUDE_BYTE_STREAM_IDLE_TIMEOUT_MS. Claude Code can receive a default for this timeout from Anthropic's servers. It now uses that default only when it talks to the Anthropic API directly. When you use another provider, such as Bedrock or Vertex, it no longer falls back to that default.

Before, the fallback applied to every provider, with a different default for providers other than the Anthropic API.

Why

This changes how stalled replies are handled on Bedrock, Vertex and other providers.

Read from
Feature flag
tengu_byte_stream_idle_timeout_ms Not enough to say

Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.

This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.299: not a boolean we can read

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.299. It isn't a statement about your account. What a flag value here can and cannot tell you

What the documentation says
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtIt is not settled what timeout applies on providers other than the Anthropic API now.

See this entry in the whole of v2.1.299 →

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