Claude Opus 5 Lands, and I Pointed It at This Repo
Anthropic shipped Claude Opus 5 on July 24, and the pitch is unusually easy to summarize: close to the frontier intelligence of their top model, Fable 5, at roughly half the price. Pricing sits at $5 per million input tokens and $25 per million output, identical to Opus 4.8, which makes it a straight upgrade rather than a new tier to budget for. It is now the default on Claude Max and the strongest model available on Pro.
Introducing Claude Opus 5
Anthropic's everyday model for developers and knowledge work, at half the price of Fable 5.
The thing it turned out to be good at was not writing code. It was reading a codebase and telling me what was a miss with it.
I pointed it at this portfolio, and the findings were not the ones I expected. It showed the intelligence similar to that of Fable 5, but less token hungry than it!