Grok 4.5's pricing and intelligence are unmatched. It's one of the biggest AI releases of this week.
atomic[.]chat compared 4 models on three HTML5 canvas physics scenes to evaluate realism, spatial reasoning, and token efficiency.
- Robot deathmatch: Tombstone vs. Minotaur
- A hydraulic press flattening objects on a conveyor
- A semi truck jumping a canyon
GPT 5.6 Sol: 12.9K tokens ($0.51, ~7 min)
Grok 4.5: 10.8K tokens ($0, ~5 min)
Muse Spark 1.1: 26.8K tokens ($0.12, ~7.5 min)
GLM 5.2: 10.9K tokens ($0.02, ~12 min)
Grok 4.5 came surprisingly close to GPT 5.6 Sol while running on the free tier. GPT 5.6 Sol delivered consistently strong results, GLM 5.2 was the roughest, and Muse Spark 1.1 used the most tokens.
The benchmark was run using atomic[.]chat, a desktop app that runs LLMs locally.