stevibe (@stevibe) “4 canvas animation prompts on GPT-5.6 (Sol Ultra, Terra Ultra, Luna Max) vs GPT-” — TopicDigg

4 canvas animation prompts on GPT-5.6 (Sol Ultra, Terra Ultra, Luna Max) vs GPT-5.5 xhigh. The tests: ✍️ Mac "hello": Sol Ultra and 5.5 tied for the most authentic cursive. Luna Max wrote... something else. 🔥 Fireball into water: GPT-5.6 Sol Ultra was strong, but honestly, GPT-5.5 did BETTER. The steam burst, the bubble plume. 📜 Burning wet paper: GPT-5.5 wins again. The flame stopped right at the water edge, smoke rose, and the wet half just charred black instead of burning. Realistic. 📱 ChatGPT app UI: this is where 5.6 pulled ahead. All three variants followed the multi-step sequence and streamed the reply word by word. 5.5 skipped the streaming. Takeaway: > 5.6 is clearly better at instruction-following and multi-step orchestration. > But raw physics intuition? The old model still holds its ground.