GPT-6 Sol | First impressions

https://arena.ai/agent GPT-6 Sol just launched — and the headline isn't raw quality, it's efficiency. In this video, Peter runs GPT-6 Sol head-to-head against GPT-5.6 Sol on the same prompts (both on max reasoning) and compare not just the generations, but total tokens used and wall-clock time. The results: comparable or better outputs in a fraction of the time, often at half the token cost. Peter suggests this points to a bigger trend of smarter, cheaper, faster models — and explains why you can stop cranking reasoning to max. Peter’s prompts: https://github.com/petergpt/3d-prompt-collection 0:00 Intro: GPT-6 Sol launch & making sense of the model names 0:36 First head-to-head: same prompt, tokens & generation time compared 2:29 3D balloon test: 53 min / 30M tokens vs 10 min / 4M tokens 3:26 Stonehenge comparison 4:01 Octopus test & my theory on why validation burns time, not tokens 5:18 Why cost matters: agent-mode rankings and subscription burn 8:02 Monet painting world: creativity test 9:32 Van Gogh generation & a curious token discrepancy 10:01 The trend: smarter models that don't validate in circles 11:59 Raindrop macro world: the quality uplift 12:54 How GPT-6 Sol feels vs the brittle 5.6 14:21 Advice: try lower reasoning settings (max is rarely worth it) 16:53 Humpback whale finale & closing thoughts #GPT6 #AI #LLM #arenaai