I tested Kimi K3 vs Claude Opus 4.8
Same prompt, an armory bay with lighting, props, and detail. Top is Kimi K3, bottom is Opus 4.8.
It's not even close.
Kimi K3 built a full scene with textures, proper lighting, ammo crates, weapon racks, working detail everywhere. Opus 4.8 gave me a near empty room with a couple of floating tables.
No doubt it beats Opus 4.8. Kimi K3 is Fable 5 level, and it's clearly better than GPT-5.6 Sol at 3D and games.
An open weight model just matched the best closed models on the market. Let that sink in.