Historical data from the Arena leaderboard, aggregated and visualized here from lmarena-ai/leaderboard-dataset on Hugging Face, licensed CC BY 4.0 — data current through …. For live, up-to-the-minute rankings see the official Arena leaderboard ↗.
Which lab held the #1 spot in each category leaderboard, over time, across all arenas (text, vision, WebDev, image/video generation, agent, and more). The eight labs with the most #1 finishes get their own color; every other lab (brief leads, early open-source models, etc.) is grouped under "Other" — hover a segment to see exactly who and which model. Click a group name to collapse or expand its subcategories.
One segment per leadership run (rank #1 model's lab) within a category. The current leader in each row is drawn slightly wider than its true date range so it stays clickable. Data through .
Each line is one lab, tracking its best-performing model's rating over time (the max across all of that lab's models on the leaderboard that day). Pick a category, toggle up to 8 labs, and hover the chart — the tooltip names which model was in the lead.
Not directly comparable across categories. Data through .