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.
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.
- Level
- Everyday Most adults, without training
- Scored
- Checked automatically A program checks the result against an answer key, unit tests or the expected final state.
- Answers
- Agent task Many steps in a terminal, browser, desktop, app, game or robot.
Claude Sonnet 4.6 leads with 72.1% among models released by Feb 2026
Best score per model in Epoch AI’s data. Where a model ran with several settings or harnesses, we keep its best.
The newest model with a score here came out in Feb 2026, and nobody has tested 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 Claude Sonnet 4.6 no thinking 72.1%
- 2 Claude Opus 4.5 no thinking 66.3%
- 3 Kimi K2.5 63.3%
- 4 Claude Sonnet 4.5 no thinking 62.9%
- 5 Claude Sonnet 4 43.9%
- 6 Claude 3.7 Sonnet 35.8%
- 7 computer-use-preview-2025-03-11 31.3%
- 8 o3 medium 23%
- 9
Qwen2.5-72B 5.00%
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | Claude Sonnet 4.6 | 72.1% | no thinking, claude-sonnet-4-6 (100 steps) | Feb 2026 | Epoch AI |
| 2 | Claude Opus 4.5 | 66.3% | no thinking, Claude Opus 4.5 | Nov 2025 | Epoch AI |
| 3 | Kimi K2.5 | 63.3% | Kimi-K2.5 | Jan 2026 | Epoch AI |
| 4 | Claude Sonnet 4.5 | 62.9% | no thinking, claude-sonnet-4-5-20250929 (100 steps) | Sep 2025 | Epoch AI |
| 5 | Claude Sonnet 4 | 43.9% | claude-4-sonnet-20250514 (50 steps) | May 2025 | Epoch AI |
| 6 | Claude 3.7 Sonnet | 35.8% | claude-3-7-sonnet-20250219 (50 steps) | Feb 2025 | Epoch AI |
| 7 | computer-use-preview-2025-03-11 | 31.3% | computer-use-preview (50 steps) | Mar 2025 | Epoch AI |
| 8 | o3 | 23% | medium, o3 (100 steps) | Apr 2025 | Epoch AI |
| 9 | | 5.00% | qwen2.5-vl-72b-instruct (100 steps) | Sep 2024 | Epoch AI |
Labs report scores for 12 models in their cards. We plot every source in the charts below.
6 models have held number one since its release in Apr 2024
Lab claims count from the day the card came out, independent runs from the model’s release. We draw one row each for Epoch AI’s runs and what labs claim in their cards.
Scores over time
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 Jun 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 |
|---|---|---|---|
| 23 Jun 2026 | 78.8 | OSWorld (Generalist CUA setting) | |
| 18 Dec 2025 | 61.9 | OSWorld | |
| 8 Dec 2025 | GLM-4.6V | 37.2 | OSWorld |
| 23 Sep 2025 | 38.1 | OSWorld | |
| 2 Sep 2025 | 47.5 | OSWorld | |
| 11 Aug 2025 | GLM-4.5V | 35.8 | OSWorld |
| 1 Jul 2025 | GLM-4.1V-9B-Thinking | 14.9 | OSWorld |
| 12 May 2025 | 36.7 | OSWorld | |
| 16 Apr 2025 | 42.5 | OSworld (100 steps) | |
| 28 Jan 2025 | 8.83 | OSWorld | |
| 23 Jan 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 |
|---|---|---|---|---|
| 23 Jun 2026 | | 78.8 | OSWorld, Generalist CUA setting (Table 4). The 2.5.1 text says 78.2 | Capabilities |
| 21 Mar 2026 | | 61.9 | OSWorld (Table 5) | Capabilities |
| 1 Jan 2026 | GLM-4.6V technical report | 37.2 | OSWorld, 100-step budget, GLM-4.6V thinking (Table 2) | Capabilities |
| 26 Nov 2025 | | 38.1 | OSWorld (Table 2) | Capabilities |
| 13 Aug 2025 | GLM-4.5V technical report | 35.8 | OSWorld, 100-step budget, GLM-4.5V thinking (Table 2) | Capabilities |
| 1 Jul 2025 | GLM-4.1V-9B-Thinking technical report | 14.9 | OSWorld, 100-step budget, GLM-4.1V-9B-Thinking thinking (Table 2) | Capabilities |
| 11 May 2025 | | 36.7 | OSWorld, thinking (Table 8) | Capabilities |
| 19 Feb 2025 | | 8.83 | OSWorld (Table 9) | Capabilities |
| 23 Jan 2025 | OpenAI Computer-Using Agent (CUA) system card | 38.1 | OSWorld, CUA performance 38.1% (4.7, March 11, 2025 update) | Capabilities |
| 22 Oct 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.
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%
- 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%
- RecreationBench In use Agents explore a running reference app and rebuild it, across 250 tasks on five platforms. Programmatic tests and a VLM judge score the result. GPT-6 Astra 58.1%