Opus 5.5 is the real deal: same accuracy as Fable 5.1 on my 25 graded tasks, faster, and way cheaper

Opus 5.5 achieved the same accuracy as Fable 5.1 on 25 graded tasks, outperforming it in speed and cost. It was faster and cheaper than other top models, with an estimated cost of $0.09 per passed task compared to Fable 5.1's ~$0.26, and an average time of 27s versus 41s. Opus 5.5 also showed similar accuracy to Opus 5 at about half the estimated cost. Low effort tasks on Opus 5.5 were approximately 20% cheaper and 30% faster without accuracy loss.