Who ranks #1 on the OSWorld 2.0 (Strict) leaderboard?
As of September 1, 2026, Claude Fable 5.1 by Anthropic ranks #1 on OSWorld 2.0 (Strict) at 41.7%. API pricing is $10.00/M input and $50.00/M output.
As of September 1, 2026, Claude Fable 5.1 is #1 for OSWorld 2.0 (Strict) at 41.7%. Ranked by the OSWorld 2.0 (Strict) score 2 models in this index have a published OSWorld 2.0 (Strict) score. Methodology: OSWorld (https://os-world.github.io/). OSWorld 2.0 (Strict) leaderboard with live API prices. OSWorld 2.0 Strict — desktop computer-use pass rate when every checkpoint must pass. Official methodology: OSWorld (https://os-world.github.io/).
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As of September 1, 2026, Claude Fable 5.1 by Anthropic is #1 for OSWorld 2.0 (Strict) at 41.7%. Ranked by the OSWorld 2.0 (Strict) score This board also tracks OSWorld 2.0 (Strict). Next on the same board: Claude Mythos 5.1. This osworld 2.0 (strict) leaderboard ranks models by OSWorld 2.0 (Strict). Scores come from public evals. Prices are the live API rates in the table above.
Sources: OSWorld (https://os-world.github.io/); OpenAI API pricing (https://developers.openai.com/api/docs/pricing); Anthropic Claude API pricing (https://platform.claude.com/docs/en/about-claude/pricing); Gemini API pricing (https://ai.google.dev/gemini-api/docs/pricing)
| Rank | Model | OSWorld 2.0 (Strict) | Input /M | Output /M |
|---|---|---|---|---|
| 1 | Claude Fable 5.1 | 41.7% | $10.00 | $50.00 |
| 2 | Claude Mythos 5.1 | 41.7% | $10.00 | $50.00 |
Rank one eval at a time. All LLM benchmarks.
As of September 1, 2026, Claude Fable 5.1 by Anthropic ranks #1 on OSWorld 2.0 (Strict) at 41.7%. API pricing is $10.00/M input and $50.00/M output.
The current OSWorld 2.0 (Strict) ranking as of September 1, 2026 is 1. Claude Fable 5.1 at 41.7%; 2. Claude Mythos 5.1 at 41.7%.
Claude Fable 5.1 currently leads OSWorld 2.0 (Strict) and is also the cheapest scored model on this page, at $10.00/M input and $50.00/M output ($60.00 blended).
Not automatically. Claude Fable 5.1 leads OSWorld 2.0 (Strict), but a cheaper scored model can be the better production choice if the quality gap is small. Use the table to weigh OSWorld 2.0 (Strict) against input/output price, context window, and related evals.
Scores and API prices on this page are refreshed from published evals and provider rates. The snapshot is labeled September 1, 2026. Treat it as a current index, not a one-off blog post.
OSWorld 2.0 Strict — desktop computer-use pass rate when every checkpoint must pass. This page ranks models that have published a OSWorld 2.0 (Strict) score, with live API token prices on the same row. Official methodology: OSWorld (https://os-world.github.io/).
This page is the OSWorld 2.0 (Strict) leaderboard. Models are sorted by OSWorld 2.0 (Strict), with input and output token prices on the same row so you can weigh score against cost. Official boards often omit price; that comparison is the point of this index.
The official OSWorld page owns the methodology. This page keeps the published OSWorld 2.0 (Strict) score next to live API $/M so you can pick a production SKU, not only a trophy number. Source: https://os-world.github.io/