✨ Changelog
- Done GPT-5.2-chat (with tools)
Mid February 2026 — GPT-5.2-chat now supports web search and code interpreter tools. This yields URLs that actually exist and code that compiles/runs without errors.
- Done New models: Claude Opus 4.5, Claude Sonnet 4.5, GPT-5.2-chat & GPT-5-Pro
Early February 2026 — Four new state-of-the-art models are now available in the arena.
- Done Quality-of-life features
Late January 2026 — Light/dark mode, fullscreen mode, and copy buttons for text and code snippets.
- Done Champion Mode
January 2026 — Users can now choose a champion model which will be compared to a random opponent. Both champion and opponent are only revealed after voting.
- Done UI updates
Improved multiple UI related elements for better user experience. Changed the vote button design to make it more intuitive and visually appealing. The chat history sidebar is fixed now so that it remains visible while scrolling through the chat.
Last updated: February 2026