Kimi K3 tops modelgrep’s design leaderboard

Kimi K3 leads modelgrep’s August 2026 Design Arena leaderboard for design and frontend generation, with 1379 Website Elo. GPT-5.6 Sol follows at 1344 Website Elo, while Claude Opus 5 ranks third at 1343 Website Elo. Kimi K3 also lists 57.1 intel, $3.00/M and 105 t/s, positioning it as the highest-rated option on the website board.

The ranking focuses on the website category rather than each model’s strongest overall board. Scores come from head-to-head human preference tests in which blind voters compare AI-generated UI and web pages. The methodology separates interface and frontend work from adjacent categories such as data visualization, SVG and 3D generation, where different models may be stronger.