Online-Mind2Web
Web agents do 300 tasks on 136 live websites. An LLM judge reads the agent's trajectory and decides whether the task succeeded.
From the paper An Illusion of Progress? Assessing the Current State of Web Agents.
In the authors’ words
As digitalization and cloud technologies evolve, the web is becoming increasingly important in the modern society. Autonomous web agents based on large language models (LLMs) hold a great potential in work automation. It is therefore important to accurately measure and monitor the progression of their capabilities. In this work, we conduct a comprehensive and rigorous assessment of the current state of web agents. Our results depict a very different picture of the competency of current agents, suggesting over-optimism in previously reported results. This gap can be attributed to shortcomings in existing benchmarks. We introduce Online-Mind2Web, an online evaluation benchmark consisting of 300 diverse and realistic tasks spanning 136 websites. It enables us to evaluate web agents under a setting that approximates how real users use these agents. To facilitate more scalable evaluation and development, we also develop a novel LLM-as-a-Judge automatic evaluation method and show that it can achieve around 85% agreement with human judgment, substantially higher than existing methods. Finally, we present the first comprehensive comparative analysis of current web agents, highlighting both their strengths and limitations to inspire future research.
- Level
- Everyday Most adults, without training
- Scored
- Graded by a model A language model scores each response, usually against a rubric.
- Answers
- Agent task Many steps in a terminal, browser, desktop, app, game or robot.
UI-TARS-2 leads with 88.2% among models released by May 2026
Best score per model as labs report them in their own cards. Labs pick their own settings, so these compare less cleanly than independent runs.
The newest model with a score here came out in May 2026, and nobody has reported a newer one. Among the 20 highest-ranked models on the capability index, these have no score yet:
- GPT-6 Astra
- Claude Opus 5.5
- GPT-6.1 Terra
- GPT-6.1 Sol
- and 16 more
- 1
UI-TARS-2 88.2%
- 2
Seed1.8 85.9%
- 3
Seed1.5-VL 76.4%
- 4
UI-TARS-1.5 75.8%
- 5
Fara1.5-27B 72.3%
- 6
Gemini 2.5 Computer Use 69%
- 7
MolmoWeb 8B 35.3%
- 8
Fara-7B 34.1%
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | | 88.2% | Sep 2025 | Model card | |
| 2 | | 85.9% | Dec 2025 | Model card | |
| 3 | | 76.4% | May 2025 | Model card | |
| 4 | | 75.8% | Apr 2025 | Model card | |
| 5 | | 72.3% | May 2026 | Model card | |
| 6 | | 69% | Oct 2025 | Model card | |
| 7 | | 35.3% | Mar 2026 | Model card | |
| 8 | | 34.1% | Nov 2025 | Model card |
3 models have held number one since its release in Apr 2025
Lab claims count from the day the card came out, independent runs from the model’s release.
The best score passed 85% in Sep 2025
All the scores we have, one dot each, so a model tested at several settings appears more than once.
Labs headline it less often now, last in May 2026
Launch posts from every lab that has listed it, one tick per post. Tall colored ticks include it, and short gray ones leave it out.
| Date | Launch post | Score | As the post writes it |
|---|---|---|---|
| 21 May 2026 | 72.3 | Online-Mind2Web | |
| 24 Mar 2026 | 35.3 | Online-Mind2Web (pass@1) | |
| 18 Dec 2025 | 85.9 | Online-Mind2web | |
| 24 Nov 2025 | 34.1 | Online-M2W | |
| 7 Oct 2025 | 69 | Online-Mind2Web, official leaderboard (Browserbase 65.7) | |
| 2 Sep 2025 | 88.2 | Online-Mind2web | |
| 12 May 2025 | 76.4 | Online-Mind2Web | |
| 16 Apr 2025 | 75.8 | Online-Mind2web |
6 system cards report it, from 4 labs
Besides launch posts, we read the system cards, model cards and technical reports labs publish with a release. They report far more, including safety and frontier-risk tests.
| Date | Document | Score | As the document writes it | Section |
|---|---|---|---|---|
| 18 Jun 2026 | | 72.3 | Online-Mind2Web task success, WebJudge with o4-mini, mean of 3 runs, 95% CI 3.8 (Tables 3 and 7) | Capabilities |
| 9 Apr 2026 | | 35.3 | Online-Mind2Web, o4-mini judge, 100 steps (Table 4). Pass@4 60.5 (Figure 6) | Capabilities |
| 21 Mar 2026 | | 85.9 | Online-Mind2web (Table 5) | Capabilities |
| 24 Nov 2025 | | 34.1 | Online-M2W success rate, mean of 3 runs, 34.1 ± 3.7 (Table 9, Table 19) | Capabilities |
| 7 Oct 2025 | | 69 | Online-Mind2Web, Official Leaderboard, 65.7 measured by Browserbase (results table, p.3) | Capabilities |
| 11 May 2025 | | 76.4 | Online-Mind2Web, thinking (Table 8) | Capabilities |
More in Computer and browser use
- BrowseComp In use Hard-to-find facts that need persistent web browsing. Short verifiable answers graded for exact correctness. Claude Fable 5 93.3%
- ScreenSpot-Pro In use GUI grounding on high-resolution professional-software screenshots. The model must locate the target UI element. GPT-6 Astra 92.7%
- AndroidWorld In use Agents complete 116 tasks across 20 real Android apps in an emulator. Each task checks the device's system state to judge success. GPT-6 Astra 100%
- OSWorld 2.1 In use Agents complete 108 long-horizon workflows across 31 self-hosted websites and desktop apps, averaging 318 tool calls. Scored by binary completion and checkpoint partial credit. Claude Opus 5.5 81.8%
- WebArena-Verified In use Agents complete 812 audited WebArena tasks on self-hosted websites. Deterministic evaluators check the agent's answer and captured network traces.
Muse Spark 1.1 69%
- MobileWorld In use Agents complete 201 tasks across 20 mobile apps, including tasks that need user clarification or MCP tools. Backend checks verify success. Kimi K3 74.4%