OSWorld
Agents complete 369 real computer tasks in Ubuntu desktop apps through screenshots and mouse and keyboard actions. Execution-based scripts check the final state.
OSWorld-Verified fixed task errors in July 2025, and OSWorld 2.0 replaced it as the latest version in June 2026.
- Released
- April 2024
- Kind
- Desktop apps
- Level
- Everyday
- Scored
- Checked automatically
- Answers
- Agent task
- Tasks
- All public
- Strongest model tested
- Claude Sonnet 4.6 #56 on the capability index
- Last in a launch post
- June 2026, dropped for a newer version
- Last model added
- June 2026
- Scores refreshed
- November 12th, 2026
In the authors’ words
Autonomous agents that accomplish complex computer tasks with minimal human interventions have the potential to transform human-computer interaction, significantly enhancing accessibility and productivity. However, existing benchmarks either lack an interactive environment or are limited to environments specific to certain applications or domains, failing to reflect the diverse and complex nature of real-world computer use, thereby limiting the scope of tasks and agent scalability. To address this issue, we introduce OSWorld, the first-of-its-kind scalable, real computer environment for multimodal agents, supporting task setup, execution-based evaluation, and interactive learning across various operating systems such as Ubuntu, Windows, and macOS. OSWorld can serve as a unified, integrated computer environment for assessing open-ended computer tasks that involve arbitrary applications. Building upon OSWorld, we create a benchmark of 369 computer tasks involving real web and desktop apps in open domains, OS file I/O, and workflows spanning multiple applications. Each task example is derived from real-world computer use cases and includes a detailed initial state setup configuration and a custom execution-based evaluation script for reliable, reproducible evaluation. Extensive evaluation of state-of-the-art LLM/VLM-based agents on OSWorld reveals significant deficiencies in their ability to serve as computer assistants. While humans can accomplish over 72.36% of the tasks, the best model achieves only 12.24% success, primarily struggling with GUI grounding and operational knowledge. Comprehensive analysis using OSWorld provides valuable insights for developing multimodal generalist agents that were not possible with previous benchmarks. Our code, environment, baseline models, and data are publicly available at https://os-world.github.io.
Claude Sonnet 4.6 leads with 72.1% among models released by February 2026
Best score per model from OS World Website, as Epoch AI copied it. We don’t read that board ourselves yet. Where a model ran with several settings, we keep its best.
Seed2.1 Pro leads with 78.8%, 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 February 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 Claude Sonnet 4.6 no thinking 72.1%
- 2 Kimi K2.5 63.3%
- 3 Claude Sonnet 4.5 no thinking 62.9%
- 4 Claude Sonnet 4 43.9%
- 5 Claude 3.7 Sonnet 35.8%
- 6 computer-use-preview-2025-03-11 31.3%
- 7 o3 medium 23%
- 8
Qwen2.5-72B 5.00%
Source: OS World Website, via Epoch AI (CC BY 4.0)
- 78.8
Seed2.1 Pro
- 72.1 Claude Sonnet 4.6
- 66.3 Claude Opus 4.5
- 63.3 Kimi K2.5
- 62.9 Claude Sonnet 4.5
- 62.3 GLM-5V-Turbo
- 61.9
Seed1.8
- 47.5
UI-TARS-2
- 43.9 Claude Sonnet 4
- 42.5
UI-TARS-1.5
- 38.1 OpenAI Computer-Using Agent (CUA)
- 38.1
Qwen3-VL-235B-A22B
- 37.2 GLM-4.6V
- 36.7
Seed1.5-VL
- 35.8 Claude 3.7 Sonnet
- 35.8 GLM-4.5V
- 31.3 computer-use-preview-2025-03-11
- 23.0 o3
- 14.9 Claude 3.5 Sonnet (October 2024)
- 14.9 GLM-4.1V-9B-Thinking
- 8.83
Qwen2.5-VL-72B
- 5.00
Qwen2.5-72B
- 1
Seed2.1 Pro 78.8%
- 2 Claude Sonnet 4.6 no thinking 72.1%
- 3 Claude Opus 4.5 no thinking 66.3%
- 4 Kimi K2.5 63.3%
- 5 Claude Sonnet 4.5 no thinking 62.9%
- 6 GLM-5V-Turbo 62.3%
- 7
Seed1.8 61.9%
- 8
UI-TARS-2 47.5%
- 9 Claude Sonnet 4 43.9%
- 10
UI-TARS-1.5 42.5%
- 11 OpenAI Computer-Using Agent (CUA) 38.1%
- 12
Qwen3-VL-235B-A22B 38.1%
- 13 GLM-4.6V 37.2%
- 14
Seed1.5-VL 36.7%
- 15 Claude 3.7 Sonnet 35.8%
- 16 GLM-4.5V 35.8%
- 17 computer-use-preview-2025-03-11 31.3%
- 18 o3 medium 23%
- 19 Claude 3.5 Sonnet (October 2024) 14.9%
- 20 GLM-4.1V-9B-Thinking 14.9%
- 21
Qwen2.5-VL-72B 8.83%
- 22
Qwen2.5-72B 5.00%
Sources: Labs’ model cards and OS World Website, via Epoch AI (CC BY 4.0)
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | Claude Sonnet 4.6 | 72.1% | no thinking, claude-sonnet-4-6 (100 steps) | Feb 2026 | OS World Website, via Epoch AI |
| 2 | Kimi K2.5 | 63.3% | Kimi-K2.5 | Jan 2026 | OS World Website, via Epoch AI |
| 3 | Claude Sonnet 4.5 | 62.9% | no thinking, claude-sonnet-4-5-20250929 (100 steps) | Sep 2025 | OS World Website, via Epoch AI |
| 4 | Claude Sonnet 4 | 43.9% | claude-4-sonnet-20250514 (50 steps) | May 2025 | OS World Website, via Epoch AI |
| 5 | Claude 3.7 Sonnet | 35.8% | claude-3-7-sonnet-20250219 (50 steps) | Feb 2025 | OS World Website, via Epoch AI |
| 6 | computer-use-preview-2025-03-11 | 31.3% | computer-use-preview (50 steps) | Mar 2025 | OS World Website, via Epoch AI |
| 7 | o3 | 23% | medium, o3 (100 steps) | Apr 2025 | OS World Website, via Epoch AI |
| 8 | | 5.00% | qwen2.5-vl-72b-instruct (100 steps) | Sep 2024 | OS World Website, via Epoch AI |
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | | 78.8% | Jun 2026 | Lab model card | |
| 2 | Claude Sonnet 4.6 | 72.1% | no thinking, claude-sonnet-4-6 (100 steps) | Feb 2026 | OS World Website, via Epoch AI |
| 3 | Claude Opus 4.5 | 66.3% | no thinking, Claude Opus 4.5 | Nov 2025 | Claim in Anthropic annoucement, via Epoch AI |
| 4 | Kimi K2.5 | 63.3% | Kimi-K2.5 | Jan 2026 | OS World Website, via Epoch AI |
| 5 | Claude Sonnet 4.5 | 62.9% | no thinking, claude-sonnet-4-5-20250929 (100 steps) | Sep 2025 | OS World Website, via Epoch AI |
| 6 | GLM-5V-Turbo | 62.3% | Apr 2026 | Lab model card | |
| 7 | | 61.9% | Dec 2025 | Lab model card | |
| 8 | | 47.5% | Sep 2025 | Lab model card | |
| 9 | Claude Sonnet 4 | 43.9% | claude-4-sonnet-20250514 (50 steps) | May 2025 | OS World Website, via Epoch AI |
| 10 | | 42.5% | Apr 2025 | Lab model card | |
| 11 | OpenAI Computer-Using Agent (CUA) | 38.1% | Jan 2025 | Lab model card | |
| 12 | | 38.1% | Sep 2025 | Lab model card | |
| 13 | GLM-4.6V | 37.2% | Dec 2025 | Lab model card | |
| 14 | | 36.7% | May 2025 | Lab model card | |
| 15 | Claude 3.7 Sonnet | 35.8% | claude-3-7-sonnet-20250219 (50 steps) | Feb 2025 | OS World Website, via Epoch AI |
| 16 | GLM-4.5V | 35.8% | Aug 2025 | Lab model card | |
| 17 | computer-use-preview-2025-03-11 | 31.3% | computer-use-preview (50 steps) | Mar 2025 | OS World Website, via Epoch AI |
| 18 | o3 | 23% | medium, o3 (100 steps) | Apr 2025 | OS World Website, via Epoch AI |
| 19 | Claude 3.5 Sonnet (October 2024) | 14.9% | Oct 2024 | Lab model card | |
| 20 | GLM-4.1V-9B-Thinking | 14.9% | Jul 2025 | Lab model card | |
| 21 | | 8.83% | Jan 2025 | Lab model card | |
| 22 | | 5.00% | qwen2.5-vl-72b-instruct (100 steps) | Sep 2024 | OS World Website, via Epoch AI |
Labs report scores for 13 models in their cards. Epoch AI collected claims for 1 model from labs’ reports and papers. Switch the scores above to rank them together.
6 models have held number one on OS World Website since its release in April 2024 10 models have held number one with claims included since its release in April 2024
Lab claims count from the day the card came out, independent runs from the model’s release. We draw one row each for OS World Website, which Epoch AI copied and what labs claim in their cards.
Sources: OS World Website, via Epoch AI (CC BY 4.0) and labs’ model cards
Scores over time
All the scores we have, one dot each, so a model tested at several settings appears more than once.
Sources: Other boards, via Epoch AI (CC BY 4.0), labs’ model cards and claims collected by Epoch AI (CC BY 4.0)
Labs headline it less often now, last in June 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 |
|---|---|---|---|
| Jun 23, 2026 | 78.8 | OSWorld (Generalist CUA setting) | |
| Apr 1, 2026 | GLM-5V-Turbo | 62.3 | OSWorld 62.3 |
| Dec 18, 2025 | 61.9 | OSWorld | |
| Dec 8, 2025 | GLM-4.6V | 37.2 | OSWorld |
| Sep 23, 2025 | 38.1 | OSWorld | |
| Sep 2, 2025 | 47.5 | OSWorld | |
| Aug 11, 2025 | GLM-4.5V | 35.8 | OSWorld |
| Jul 1, 2025 | GLM-4.1V-9B-Thinking | 14.9 | OSWorld |
| May 12, 2025 | 36.7 | OSWorld | |
| Apr 16, 2025 | 42.5 | OSworld (100 steps) | |
| Jan 28, 2025 | 8.83 | OSWorld | |
| Jan 23, 2025 | OpenAI Computer-Using Agent (CUA) | 38.1 | OSWorld (computer use) |
10 system cards report it, from 5 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 23, 2026 | | 78.8 | OSWorld, Generalist CUA setting (Table 4). The 2.5.1 text says 78.2 | Capabilities |
| Mar 21, 2026 | | 61.9 | OSWorld (Table 5) | Capabilities |
| Jan 1, 2026 | GLM-4.6V technical report | 37.2 | OSWorld, 100-step budget, GLM-4.6V thinking (Table 2) | Capabilities |
| Nov 26, 2025 | | 38.1 | OSWorld (Table 2) | Capabilities |
| Aug 13, 2025 | GLM-4.5V technical report | 35.8 | OSWorld, 100-step budget, GLM-4.5V thinking (Table 2) | Capabilities |
| Jul 1, 2025 | GLM-4.1V-9B-Thinking technical report | 14.9 | OSWorld, 100-step budget, GLM-4.1V-9B-Thinking thinking (Table 2) | Capabilities |
| May 11, 2025 | | 36.7 | OSWorld, thinking (Table 8) | Capabilities |
| Feb 19, 2025 | | 8.83 | OSWorld (Table 9) | Capabilities |
| Jan 23, 2025 | OpenAI Computer-Using Agent (CUA) system card | 38.1 | OSWorld, CUA performance 38.1% (4.7, March 11, 2025 update) | Capabilities |
| Oct 22, 2024 | Claude 3.5 Sonnet (October 2024) model card | 14.9 | OSWorld, screenshot only, standard 15 steps, overall success rate 14.9%. With an optimized prompt and 50 steps 22% (Table 1, 2.1) | Capabilities |
Versions
We switch the top row to each new version when it comes out. Open it for one row per version. An old version stays in play while people still test it, so whoever first takes it past 85% gets credit for closing it out.
Sources: Official leaderboards, boards copied by Epoch AI (CC BY 4.0) and labs’ model cards
More in Computer and browser use
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