Claude Code team at Anthropic

"we removed over 80% of Claude Code's system prompt for models like Claude Opus 5 and Claude Fable 5 with no measurable loss on our coding evaluations" in this 60-second breakdown he explains why over-constraining the model with strict rules and

RookArcAug 24

"Everyone doesn't need to be using Opus 5 or Fable 5.

It's like bringing a tank to a knife fight." -Affaf (Head of Eng, LaunchGood) on matching the model to the job as AI costs climb Full ep:

ClericAug 241

SITUATION EXPLAINED: Are companies rejecting frontier models, or are frontier models not good enough yet?

Fable 5 has plateaued at 11.4% of Anthropic dollar spend and just 6% of tokens, across 70,000 businesses tracked by Ramp • Opus 5 launched in late July at a lower price

MTSAug 2430

Gemini Flash 3.7 (high) vs. Opus 5 (max)

Seems like a truly surprising result... we did not expect this

maxfusion.aiAug 244