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September 21–27, 2026
Claude Opus 5.5 Lands, Games Flood In
Anthropic released Claude Opus 5.5 on September 22, and 98 of this week's builds credit it, up from zero last week.
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Themes
Opus 5.5 one-shots 3D worlds, The Minecraft clone benchmark, and Precision objects and motion reels.
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Reconstructed later from catalog records. Project details may reflect subsequent updates.
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Model drop
Claude Opus 5.5 is here
Agentic coding and knowledge work at Fable 5.1 performance with 40% lower run cost
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Also this period
Space Bunny Alpha1M-context multimodal reasoning with adjustable effort for long agentic coding and video-input tasksGemini 3.8 Flash TTSPrompt-directed voice design, cloning from 30s samples, and line-by-line acting cues for multi-speaker scenesGPT-6 SolRecurring complex coding and agentic workflows at half the price of GPT-5.6 Sol
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