[Bug] Claude 4.6 Opus generating corrupted/garbled output with invalid tokens

Resolved 💬 4 comments Opened Apr 10, 2026 by nesquikm Closed Apr 14, 2026

Bug Description
Opus 4.6 produces trash today:
isaDog,␒�es, cs5S,c. n, c5DL, cs4, ND556, ND5, ND5, eations4, D2, Ics,
ARs,4722, Ac601244ter ((1_1(4,1, Ic82, Ac4,2(12, Ac22(1, Ic1, Ic1, 1, Ic0, 1,
3,3Zero0, (2)1, 2(1, Ic0, 1, 3,3Zero0, (3)1, 2(1, Ic0, 1, 3,3Zero, 1, (4)1, 1,
(5)1, 2(1, Ic0, 1, 3,3Zero, 1, 6(6)Apologies, some stray text appeared. I'll
ignore it and continue.

Environment Info

  • Platform: darwin
  • Terminal: ghostty
  • Version: 2.1.100
  • Feedback ID: e51e460e-03b2-4f59-b778-89bf50825671

Errors

[{"error":"MaxFileReadTokenExceededError: File content (11168 tokens) exceeds maximum allowed tokens (10000). Use offset and limit parameters to read specific portions of the file, or search for specific content instead of reading the whole file.\n    at xz7 (/$bunfs/root/src/entrypoints/cli.js:4358:12671)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-10T11:11:45.046Z"}]

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