Who ranks #1 on the GMMLU leaderboard?
As of September 1, 2026, Claude Fable 5.1 by Anthropic ranks #1 on GMMLU at 94%. API pricing is $10.00/M input and $50.00/M output.
As of September 1, 2026, Claude Fable 5.1 is #1 for GMMLU at 94%. Ranked by the GMMLU score 2 models in this index have a published GMMLU score. GMMLU leaderboard with live API prices. GMMLU โ Global MMLU accuracy across 42 languages.
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As of September 1, 2026, Claude Fable 5.1 by Anthropic is #1 for GMMLU at 94%. Ranked by the GMMLU score This board also tracks GMMLU. Next on the same board: Claude Mythos 5.1. This gmmlu leaderboard ranks models by GMMLU. Scores come from public evals. Prices are the live API rates in the table above.
Sources: 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 | GMMLU | Input /M | Output /M |
|---|---|---|---|---|
| 1 | Claude Fable 5.1 | 94% | $10.00 | $50.00 |
| 2 | Claude Mythos 5.1 | 94% | $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 GMMLU at 94%. API pricing is $10.00/M input and $50.00/M output.
The current GMMLU ranking as of September 1, 2026 is 1. Claude Fable 5.1 at 94%; 2. Claude Mythos 5.1 at 94%.
Claude Fable 5.1 currently leads GMMLU 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 GMMLU, but a cheaper scored model can be the better production choice if the quality gap is small. Use the table to weigh GMMLU 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.
GMMLU โ Global MMLU accuracy across 42 languages. This page ranks models that have published a GMMLU score, with live API token prices on the same row.
This page is the GMMLU leaderboard. Models are sorted by GMMLU, 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.
Official eval pages own the methodology. This page keeps the published GMMLU score next to live API $/M so you can pick a production SKU, not only a trophy number.