Blind model battle and leaderboard platform where users vote on pairwise comparisons to score model capability.
MiniMax launched H3-Image, an image generation model that outputs 16-megapixel (4K) images in roughly 10 seconds, supports up to 16 reference images, and offers precise prompt following and editing. It ships with open weights and is available via the MiniMax API, MiniMax Code, and Hailuo AI, while also entering Arena's battle mode for blind user voting.
Anthropic released Claude Fable 5.2 (xHigh), which took first place on Arena's Code Arena WebDev leaderboard with 1832 points, ahead of Claude Opus 5.5, Gemini 4 Carbon and GPT-6 Astra. The update is up to 30% faster than Fable 5.1 and cheaper at $8/$40 per million tokens. Arena also showcased 17 generations spanning 3D worlds, playable games, website UI, data visualizations and interactive code-generated animations.