I gave Sonnet 5, Sonnet 5.5, Opus 5 and Opus 5.5 the same short prompt and let each build a game in one shot at High reasoning.
The prompt was intentionally simple: "Build an endless runner in Tron visual style. 3 lanes, jump/slide/dodge, obstacles, rewards, etc. Web browser
NVIDIA let coding agents rewrite a GPU kernel.
They got 2.96x over Moonshot's FlashKDA on a B300, and on the way the agents found about ten ways to cheat. hacks NVIDIA caught, from their KDA blog: hard-coded a normalization constant (0.1778). claimed 3.74x, real 2.48x threw
Here's how to build a 3D fantasy game with Claude Opus 5.5...
The trick is splitting assets from assembly, but there's a smart way to set it up: - step 1: connect Claude Code to Unreal Engine 5 through MCP, and have Opus read the project before it changes anything - step 2: one
Been loving Opus 5.5 I hope it never gets nerfed
It built an app for one of our Indian clients overnight. Then it made the launch video. A real product for a big client who'd never used AI. I gave Claude the context, dummy data and API keys. Opus 5.5 on Max effort worked for ~8
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