MAG (Set-of-Mark): leaderboard
Metric: Task success rate (%; functional WebArena checkers, LLM judge for 29 answer tasks) with Set-of-Mark element selection grounding, 174 held-out test tasks on the six self-hosted WebArena sites; the agent sees screenshots, acts and writes a guide sentence at every step, 25-step budget, one run, the MAG harness; higher is better. Source: arxiv.org. Saturation forecast: Around April 2028. 4 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | GPT-5.5 (Low) | 35.6 |
| 2 | Gemini 3.5 Flash (Low) | 34.5 |
| 3 | Claude Sonnet 4.6 (Low) | 27.6 |
Interactive version: theaggregate.ai/benchmark?slug=mag-set-of-mark · How It Works · Data refreshed daily, snapshot 2026-09-29.