Claude Opus 5.5 vs Sonnet 5.5: Twice the Price, but How Big Is the Gap?
Claude Opus 5.5 costs twice as much as Sonnet 5.5, but the benchmark gap is small. Sonnet wins on speed and cost; Opus pulls ahead on hard reasoning and system design.
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Meta Muse Wonder and Wonder Full: How Active Memory Compares With GPT and Claude
Meta’s Muse Wonder and Wonder Full add Active Memory and Active Focus. Both beat GPT-6 Astra and Claude Opus 5.5 on MemoryBench, and Muse Wonder costs $4/$20 per million tokens.
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Gemini 4 Argon vs. GPT-6 Astra and Claude Opus 5.5: Benchmarks and API Pricing Compared
Google’s Gemini 4 Argon costs $2/$10 per million tokens through Nov. 30 and leads several coding and professional-work benchmarks, but GPT-6 Astra and Claude Opus 5.5 still win on others.
