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.
- Released
- April 2025
- Kind
- Web browsing
- Level
- Everyday
- Scored
- Graded by a model
- Answers
- Agent task
- Tasks
- All public
- Strongest model tested
- Claude Opus 4.8 #21 on the capability index
- Last in a launch post
- May 2026, dropped after it saturated
- Last model added
- June 2026
- Scores refreshed
- November 12th, 2026
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.
Hark Handoff tops the leaderboard with 97.7%
Best score per entry from the benchmark's own leaderboard, read on November 12th, 2026. Where a model ran with several settings or harnesses, we keep its best. Names in gray aren't in our model list: fine-tunes, agent systems, products and older models. They don't count toward leaders. The best model we track is GPT-5.4, at 92.7%.
GPT-5.4 leads with 92.8%, claims included
Best score per model from every source, including labs’ own numbers and claims Epoch AI collected from reports and papers. Labs pick their own settings, so a claim can beat an independent run of the same model.
The newest model with a score here came out in March 2026, and nobody has tested a newer one. Among the 20 highest-ranked models on the capability index, these have no score yet:
- Claude Fable 5.2
-
Gemini 4 Carbon
- GPT-6 Astra
- Claude Opus 5.5
- and 16 more
- 1 Hark Handoff 97.7%
- 2 n1.5-latest 97.3%
- 3 GPT-5.4 92.7%
- 4 n1-preview-11-2025 78.7%
- 5
Gemini 2.5 Computer Use 69%
- 6 OpenAI Computer-Using Agent 61.3%
- 7 o3-2025-04-16 and Claude-sonnet-4-20250514 57.3%
- 8 Claude 3.7 Sonnet 56.3%
- 9 GPT-4o Aug 2024 30.7%
- 10 Claude 3.5 Sonnet 29%
Source: Official Online-Mind2Web leaderboard
- 1 GPT-5.4 92.8%
- 2
UI-TARS-2 88.2%
- 3
Seed1.8 85.9%
- 4 Claude Opus 4.8 84%
- 5
Seed1.5-VL 76.4%
- 6
UI-TARS-1.5 75.8%
- 7
Fara1.5-27B 72.3%
- 8
Gemini 2.5 Computer Use 69%
- 9 Claude 3.7 Sonnet 56.3%
- 10
MolmoWeb 8B 35.3%
- 11
Fara-7B 34.1%
- 12 GPT-4o Aug 2024 30.7%
- 13 Claude 3.5 Sonnet 29%
Sources: Labs’ model cards and official Online-Mind2Web leaderboard
| # | Entry | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | Hark Handoff | 97.7% | Hark | Aug 2026 | Official leaderboard |
| 2 | n1.5-latest | 97.3% | Navigator | Jun 2026 | Official leaderboard |
| 3 | GPT-5.4 | 92.7% | ACT-2 | Mar 2026 | Official leaderboard |
| 4 | n1-preview-11-2025 | 78.7% | Navigator | Nov 2025 | Official leaderboard |
| 5 | | 69% | Google Computer Use (09-2025) | Oct 2025 | Official leaderboard |
| 6 | OpenAI Computer-Using Agent | 61.3% | Operator | Mar 2025 | Official leaderboard |
| 7 | o3-2025-04-16 and Claude-sonnet-4-20250514 | 57.3% | ACT-1-20250814 | Aug 2025 | Official leaderboard |
| 8 | Claude 3.7 Sonnet | 56.3% | Claude Computer Use 3.7 (w/o thinking) | Feb 2025 | Official leaderboard |
| 9 | GPT-4o Aug 2024 | 30.7% | SeeAct | Aug 2024 | Official leaderboard |
| 10 | Claude 3.5 Sonnet | 29% | Claude Computer Use 3.5 | Jun 2024 | Official leaderboard |
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | GPT-5.4 | 92.8% | Mar 2026 | Lab model card | |
| 2 | | 88.2% | Sep 2025 | Lab model card | |
| 3 | | 85.9% | Dec 2025 | Lab model card | |
| 4 | Claude Opus 4.8 | 84% | May 2026 | Lab model card | |
| 5 | | 76.4% | May 2025 | Lab model card | |
| 6 | | 75.8% | Apr 2025 | Lab model card | |
| 7 | | 72.3% | May 2026 | Lab model card | |
| 8 | | 69% | Google Computer Use (09-2025) | Oct 2025 | Official leaderboard |
| 9 | Claude 3.7 Sonnet | 56.3% | Claude Computer Use 3.7 (w/o thinking) | Feb 2025 | Official leaderboard |
| 10 | | 35.3% | Mar 2026 | Lab model card | |
| 11 | | 34.1% | Nov 2025 | Lab model card | |
| 12 | GPT-4o Aug 2024 | 30.7% | SeeAct | Aug 2024 | Official leaderboard |
| 13 | Claude 3.5 Sonnet | 29% | Claude Computer Use 3.5 | Jun 2024 | Official leaderboard |
Labs report scores for 10 models in their cards. Switch the scores above to rank them together.
3 models have held number one on the official leaderboard since its release in April 2025 5 models have held number one with claims included since its release in April 2025
Lab claims count from the day the card came out, independent runs from the model’s release. We draw one row each for the benchmark’s own leaderboard and what labs claim in their cards.
ByteDance Seed’s own number for UI-TARS-2 passed 85% in September 2025
All the scores we have, one dot each, so a model tested at several settings appears more than once.
Sources: Official Online-Mind2Web leaderboard and labs’ model cards
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 |
|---|---|---|---|
| May 28, 2026 | Claude Opus 4.8 | 84 | Online-Mind2Web, 84% |
| May 21, 2026 | 72.3 | Online-Mind2Web | |
| Mar 24, 2026 | 35.3 | Online-Mind2Web (pass@1) | |
| Mar 5, 2026 | GPT-5.4 | 92.8 | Online-Mind2Web, screenshot-based observations only |
| Dec 18, 2025 | 85.9 | Online-Mind2web | |
| Nov 24, 2025 | 34.1 | Online-M2W | |
| Oct 7, 2025 | 69 | Online-Mind2Web, official leaderboard (Browserbase 65.7) | |
| Sep 2, 2025 | 88.2 | Online-Mind2web | |
| May 12, 2025 | 76.4 | Online-Mind2Web | |
| Apr 16, 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 |
|---|---|---|---|---|
| Jun 18, 2026 | | 72.3 | Online-Mind2Web task success, WebJudge with o4-mini, mean of 3 runs, 95% CI 3.8 (Tables 3 and 7) | Capabilities |
| Apr 9, 2026 | | 35.3 | Online-Mind2Web, o4-mini judge, 100 steps (Table 4). Pass@4 60.5 (Figure 6) | Capabilities |
| Mar 21, 2026 | | 85.9 | Online-Mind2web (Table 5) | Capabilities |
| Nov 24, 2025 | | 34.1 | Online-M2W success rate, mean of 3 runs, 34.1 ± 3.7 (Table 9, Table 19) | Capabilities |
| Oct 7, 2025 | | 69 | Online-Mind2Web, Official Leaderboard, 65.7 measured by Browserbase (results table, p.3) | Capabilities |
| May 11, 2025 | | 76.4 | Online-Mind2Web, thinking (Table 8) | Capabilities |
2 lab claims next to the leaderboard
Each score a lab reported for its own model, beside the same model's best score on the leaderboard. Gaps mostly come from different harnesses, effort levels and task subsets. 2 of them match, which usually means one side copied the other. Every benchmark.
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. GPT-5 55.3%