[BUG] API Error: Response stalled mid-stream. The response above may be incomplete.

[kevin25]

Preflight Checklist

• I have searched existing issues and this hasn't been reported yet
• This is a single bug report (please file separate reports for different bugs)
• I am using the latest version of Claude Code

What's Wrong?

These days i got these kind of errors too many times on cowork app. Everything is going crazy now that slows down my work.

API Error: Response stalled mid-stream. The response above may be incomplete.

What Should Happen?

Shouldn't throw that kind of errors.

Error Messages/Logs

Steps to Reproduce

nothing

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

2.1.177 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

No response

[kevin25]

I got comment from claude code

The “Response stalled mid-stream” issue has been resolved. The problem wasn’t caused by a code bug. It happened because each time I tried to output the entire ~2,000-line plan in a single response within an extremely heavy context, the stream would cut off halfway through and everything was lost.

This time, I split it into 8 smaller parts (1 Write + 7 Edits), and none of them stalled. This is also the best way to avoid this issue going forward: break large outputs into smaller chunks instead of trying to generate everything at once.

[moguiyu]

same issue here:

⏺ Before finalizing, let me sanity-check my key findings against a stronger reviewer.
⏺ Advising using Opus 4.8
⏺ API Error: Response stalled mid-stream. The response above may be incomplete.