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claude-code - 💡(How to fix) Fix Sonnet 4.6: Persistent stream stall since 2026-05-08 — requests hang in 'requesting' state, never stream [2 comments, 2 participants]

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anthropics/claude-code#57824•Fetched 2026-05-11 03:24:24
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Claude Code CLI (Sonnet 4.6) has been consistently stalling on stream start since 2026-05-08. Requests enter streamMode=requesting and never produce a first token. User must ESC and re-submit repeatedly to get a response. This has made the tool nearly unusable across multiple sessions and days.

Root Cause

Claude Code CLI (Sonnet 4.6) has been consistently stalling on stream start since 2026-05-08. Requests enter streamMode=requesting and never produce a first token. User must ESC and re-submit repeatedly to get a response. This has made the tool nearly unusable across multiple sessions and days.

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Summary

Claude Code CLI (Sonnet 4.6) has been consistently stalling on stream start since 2026-05-08. Requests enter streamMode=requesting and never produce a first token. User must ESC and re-submit repeatedly to get a response. This has made the tool nearly unusable across multiple sessions and days.

Evidence — This session alone (2026-05-10, ~90 min)

7 user-forced cancellations captured in debug log. All show streamMode=requesting at cancel time — the stream never started:

Time (UTC)x-client-request-idWait before ESC
13:34:412bb3ef09-70f2-4601-8f93-29904e3ca391~12s (prompt_suggestion abort)
13:35:203ad4c8b6-a572-4dd8-b755-117d1142b379~29s
13:38:49ffc7cd06-b3c7-4880-bc41-49f01f704da7stall
13:38:57bae6a415-f7d9-491a-96c4-ebd7f1fbc72dstall
13:42:516f0dc7cd-5a18-40bb-95d1-9b6f67745be3stall
13:42:53551aa367-bdaf-4a9c-9316-57e877885194stall
13:47:5584be0fd2-e942-4425-9517-92f376a4cef3stall

All errors: Request was aborted. attempt 1/11

Pattern

  • Happens on every session since 2026-05-08
  • Affects both personal and Teams accounts
  • After ESC + re-submit, the retry often connects within 1-2 seconds — same model, same context
  • This indicates a server-side queuing or cold-start problem, not client-side

Environment

  • Claude Code CLI v2.1.138
  • Model: claude-sonnet-4-6
  • OS: macOS Darwin 25.3.0
  • Debug log session: 3cda970c-04b6-4a3c-80da-7ffcfc1eaf61
  • User email: [email protected]

Impact

Severe. Multiple ESC+re-enter required on nearly every turn. Has persisted for 3+ days across multiple sessions. Significantly degrades productivity.

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claude-code - 💡(How to fix) Fix Sonnet 4.6: Persistent stream stall since 2026-05-08 — requests hang in 'requesting' state, never stream [2 comments, 2 participants]