Claude Opus 5
Claude Opus 5 is available today at half the price of Claude Fable 5. It more than doubles Opus 4.8 on Frontier-Bench v0.1 and scores 10.2 percentage points higher on organic chemistry tasks.
The call on this one
What shipped is free. The call on it, what to do about it and the condition on that, opens with a signup: free, no card, every edition in full.
It becomes $50 a year, and signing up now keeps your first year free.