[Bug] Anthropic API Error: Internal server error with Claude 4.5 Sonnet

Status Fixed / completed
Maintainer reply None cached
Activity 5 comments · opened Nov 18, 2025 · closed Nov 18, 2025

Bug Description
getting this error using Sonnet 4.5 (not getting error using Haiku)
PI Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server
error"},"request_id":"req_011CVF4ENYjJH78JBrtuZNs2"}

Environment Info

  • Platform: win32
  • Terminal: vscode
  • Version: 2.0.44
  • Feedback ID: fefcbbf4-613f-4548-9ecc-af1b62527c65

Errors

[{"error":"Error: 500 {\"type\":\"error\",\"error\":{\"type\":\"api_error\",\"message\":\"Internal server error\"},\"request_id\":\"req_011CVF3v6V5r9XLfMUGy6YmA\"}\n    at W9.generate (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:435:18198)\n    at i_.makeStatusError (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:715:2117)\n    at i_.makeRequest (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:715:5341)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async Zt2.CsA.model (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3596:14569)\n    at async CsA (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:1830:39781)\n    at async Zt2 (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3596:14723)\n    at async file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3596:7908\n    at async zv1 (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:1594:1971)\n    at async f6A (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3596:7878)","timestamp":"2025-11-18T08:37:22.672Z"},{"error":"Error: 500 {\"type\":\"error\",\"error\":{\"type\":\"api_error\",\"message\":\"Internal server error\"},\"request_id\":\"req_011CVF3vMppLnxxD4Av2eZcs\"}\n    at W9.generate (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:435:18198)\n    at i_.makeStatusError (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:715:2117)\n    at i_.makeRequest (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:715:5341)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async Zt2.CsA.model (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3596:14569)\n    at async CsA (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:1830:39781)\n    at async Zt2 (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3596:14723)\n    at async file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3596:7908\n    at async zv1 (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:1594:1971)\n    at async f6A (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3596:7878)","timestamp":"2025-11-18T08:37:26.135Z"},{"error":"Error: 500 {\"type\":\"error\",\"error\":{\"type\":\"api_error\",\"message\":\"Internal server error\"},\"request_id\":\"req_011CVF4ENYjJH78JBrtuZNs2\"}\n    at W9.generate (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:435:18198)\n    at i_.makeStatusError (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:715:2117)\n    at i_.makeRequest (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:715:5341)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async Zt2.CsA.model (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3596:14569)\n    at async CsA (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:1830:39781)\n    at async Zt2 (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3596:14723)\n    at async file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3596:7908\n    at async zv1 (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:1594:1971)\n    at async f6A (file:///C:/Users/Kyran%20Cook/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:3596:7878)","timestamp":"2025-11-18T08:41:30.498Z"}]

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5 Comments

kibaek-kimm · 11 months ago

Same

 ⎿  API Error: 500 {"type":"error","error":{"type":"api_error","message":"Internal server error"},"request_id":"req_011CVF4P6YJx52mWfyYrwWcy"}
github-actions[bot] · 11 months ago

Found 3 possible duplicate issues:

  1. https://github.com/anthropics/claude-code/issues/11838
  2. https://github.com/anthropics/claude-code/issues/11837
  3. https://github.com/anthropics/claude-code/issues/11835

This issue will be automatically closed as a duplicate in 3 days.

  • If your issue is a duplicate, please close it and 👍 the existing issue instead
  • To prevent auto-closure, add a comment or 👎 this comment

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anasmohana · 11 months ago

same here, the same error:

  • Steps (login → choose plan → authorize → 500 errors)
  • The request ID: req_011CVF35ubQPeHttNg3pSbwS
  • Your OS: macOS (26.1 (25B78))
shawnm-anthropic · 11 months ago

https://status.claude.com/incidents/4bvvh93qjl25 - We should be recovered now. Thank you for reporting.

github-actions[bot] · 10 months ago

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.