AIFIRST
Models
r/ClaudeAI
PSA: Opus 4.8 redefines the effort scale
TLDR
System card data suggests 4.8 low effort matches 4.7 max on problem solving, while 4.8 medium burns more tokens than 4.7 high. Max mode scores slightly below x-high on SWE-bench, hinting overthinking degrades results.