[Bug] Model downgrade from Fable 5 to Opus 5 for no legitimate reason.

Related Claude Code issues

Matched on shared title terms, labels, topic and reported release — ranked so issues with real discussion come first.

• [Bug] Model Downgrade from Fable to Opus Without Clear Reason
  Open 💬 0 v2.1.202 #75211
• [Bug] Model unexpectedly downgraded from fable 5 til opus 4.8 for no legitimate reason
  Open 💬 0 v2.1.216 #79742
• [Bug] Claude Code causes model downgrade from Fable
  Open 💬 0 v2.1.218 #80381
• [Bug] Unintended model downgrade from FABLE 5 to Opus 4.8
  Open 💬 0 v2.1.216 #79739
• YURI production Flagged for some reason while using fable
  Resolved 💬 3 v2.1.170 #66645
• [Bug] Unexpected model downgrade from Claude Fable 5 to Claude Opus 4.8
  Resolved 💬 2 v2.1.197 #72999
• [Bug] Model auto-downgrade from Fable 5 to Opus 4 on complex security tasks
  Resolved 💬 1 v2.1.198 #73099
• [Bug] Anthropic API Error: Unexpected model downgrade from Fable 5.0 to Opus 4.8 during session
  Open 💬 0 v2.1.212 #78512

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Same class of failure, ranked by community engagement — this issue is one of many, so it may not appear in the visible list: IDE & terminal integration

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