Atomic Chat benchmarked Claude Sonnet 5 against Opus 4.8 and GPT 5.5 on HTML5 canvas physics demos, finding Sonnet 5 competitive at lower cost.

atomic.chat@atomic_chat_hqx

Atomic Chat benchmarked Claude Sonnet 5 against Opus 4.8 and GPT 5.5 on HTML5 canvas physics demos, finding Sonnet 5 competitive at lower cost.

Claude Sonnet 5 used 15,047 tokens ($0.15) for three physics crash demos, outperforming Opus 4.8 (23,063 tokens, $0.58) and GPT 5.5 (31,152 tokens, $0.94).
Sonnet 5 matched or beat Opus 4.8 and GPT 5.5 in wrecking ball and catapult tests, but had weaker detail and graphics.

how to reproduce · Prompt: 'build three self-contained HTML5 canvas scenes with real physics crash demos: A car crashes into a brick wall, A wrecking ball destroys a house, A catapult throws a rock at a castle wall.'

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