What's wrong with this entry?
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What
Users configured with explicit old-format Opus model IDs (claude-opus-4-20250514, claude-opus-4-1-20250805, claude-opus-4-0, claude-opus-4-1) are automatically migrated to the canonical opus alias. A notification "Model updated to Opus 4.6" is shown briefly after the migration.
Details
- Applies to first-party users only
- A new allowlist (
fXz) defines the four legacy Opus model strings subject to migration - The previous Opus 4.5 → Pro migration notification ("Model updated to Opus 4.5") has been replaced by this updated path
Evidence
Legacy Opus migration (search for "tengu_legacy_opus_migration" and "legacyOpusMigrationTimestamp")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.