{"version":"2.0.0","anchor":"opusplan-fallback-mode","canonical_anchor":"opusplan-fallback-mode","heading":"Opusplan Fallback Mode","tier":null,"area":null,"scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.0.0\/e\/opusplan-fallback-mode","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.0.0","markdown":"### Opusplan Fallback Mode\n\n**What:** Removed \"Opus Plan Mode\" model fallback strategy\n\n**Details:**\n\n- Previously: \"Use Opus 4.1 in plan mode, Sonnet 4 otherwise\"\n- This specific fallback configuration is no longer available\n- Standard model selection and rate limit fallback still work\n- **Evidence**: Variable `D31` at line 368627, function `U31()` at line 368577 in v1.0.128 - removed in v2.0.0"}