@rohanpaul_ai: atomic[.]chat, a desktop app that runs LLMs locally, ran a very revealing comparison for Claude Sonnet 5, Claude Opus 4…
Summary
atomic.chat ran a comparison showing Claude Sonnet 5 matches GPT 5.5 on three physics coding demos at 6x lower cost, using fewer tokens than other models.
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Cached at: 07/01/26, 01:56 AM
atomic[.]chat, a desktop app that runs LLMs locally, ran a very revealing comparison for Claude Sonnet 5, Claude Opus 4.8, Claude Sonnet 4.6, and GPT 5.5.
Claude Sonnet 5 just matched GPT 5.5 on 3 physics coding demos at 6x lower cost.
Also spent minimum number of tokens.
- Sonnet 5: 15,047 tokens, $0.15
- Opus 4.8: 23,063 tokens, $0.58
- Sonnet 4.6: 25,824 tokens, $0.39
- GPT 5.5: 31,152 tokens, $0.94
atomic.chat (@atomic_chat_hq): New Claude Sonnet 5 performs at GPT 5.5 level 6x cheaper!
We gave 4 models the same prompt: build three self-contained HTML5 canvas scenes with real physics crash demos
Prompts:
- A car crashes into a brick wall
- A wrecking ball destroys a house
- A catapult throws a rock at a
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