ComparisonClaude Opus 5.5 vs Sonnet 5.5: Which Should You Use?
Sonnet 5.5 claims near-Opus performance at half the price. Anthropic's own benchmark table shows where that's true, where Opus 5.5 still wins, and which model fits your workload.
ExplainerClaude Opus 5.5 Explained: Price, Release Date, Access
What Claude Opus 5.5 actually costs, when it launched, and how its pricing, context window, and benchmarks compare to Opus 5 and Fable 5.1.
ComparisonClaude Opus 5.5 vs Fable 5.1: Which Should You Use?
Same 1M context, same 128K output — but Opus 5.5 costs 60% less than Fable 5.1 and now beats it on Anthropic’s own benchmarks. Here’s which one actually fits your task.