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.
Added to The Deploy Log , updated . Read Edition 44, the edition that carried it.
45 rows from Anthropic in The Deploy Log are dated on or before this one, this one included.