Who ranks #1 on the Humanity's Last Exam (With Tools) leaderboard?
As of September 3, 2026, Claude Fable 5.1 by Anthropic ranks #1 on Humanity's Last Exam (With Tools) at 65%. API pricing is $10.00/M input and $50.00/M output.
As of September 3, 2026, Claude Fable 5.1 is #1 for Humanity's Last Exam (With Tools) at 65%. Ranked by the Humanity's Last Exam (With Tools) score 7 models in this index have a published Humanity's Last Exam (With Tools) score. Methodology: Humanity's Last Exam (https://agi.safe.ai/). Humanity's Last Exam (With Tools) leaderboard with live API prices. HLE (With Tools) — Humanity's Last Exam with code execution and tool access. Official methodology: Humanity's Last Exam (https://agi.safe.ai/).
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As of September 3, 2026, Claude Fable 5.1 by Anthropic is #1 for Humanity's Last Exam (With Tools) at 65%. Ranked by the Humanity's Last Exam (With Tools) score This board also tracks Humanity's Last Exam (With Tools). Next on the same board: Claude Mythos 5.1 and Claude Mythos 5. This humanity's last exam (with tools) leaderboard ranks models by Humanity's Last Exam (With Tools). Scores come from public evals. Prices are the live API rates in the table above.
Sources: Humanity's Last Exam (https://agi.safe.ai/); 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 | Humanity's Last Exam (With Tools) | Input /M | Output /M |
|---|---|---|---|---|
| 1 | Claude Fable 5.1 | 65% | $10.00 | $50.00 |
| 2 | Claude Mythos 5.1 | 65% | $10.00 | $50.00 |
| 3 | Claude Mythos 5 | 64.5% | $10.00 | $50.00 |
| 4 | GPT-5.4 mini | 41.5% | $0.75 | $4.50 |
| 5 | GPT-5.4 nano | 37.7% | $0.20 | $1.25 |
| 6 | GPT-5.4 | 27.4% | $2.50 | $15.00 |
| 7 | GPT-5.3 Codex | 24.4% | $1.75 | $14.00 |
Rank one eval at a time. All LLM benchmarks.
As of September 3, 2026, Claude Fable 5.1 by Anthropic ranks #1 on Humanity's Last Exam (With Tools) at 65%. API pricing is $10.00/M input and $50.00/M output.
The current Humanity's Last Exam (With Tools) ranking as of September 3, 2026 is 1. Claude Fable 5.1 at 65%; 2. Claude Mythos 5.1 at 65%; 3. Claude Mythos 5 at 64.5%.
GPT-5.4 nano is the cheapest scored model on this humanity's last exam (with tools) leaderboard at $0.20/M input and $1.25/M output ($1.45 blended). Claude Fable 5.1 still leads Humanity's Last Exam (With Tools) at 65%.
Not automatically. Claude Fable 5.1 leads Humanity's Last Exam (With Tools), but a cheaper scored model can be the better production choice if the quality gap is small. Use the table to weigh Humanity's Last Exam (With Tools) 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 3, 2026. Treat it as a current index, not a one-off blog post.
HLE (With Tools) — Humanity's Last Exam with code execution and tool access. This page ranks models that have published a Humanity's Last Exam (With Tools) score, with live API token prices on the same row. Official methodology: Humanity's Last Exam (https://agi.safe.ai/).
This page is the Humanity's Last Exam (With Tools) leaderboard. Models are sorted by Humanity's Last Exam (With Tools), 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 Humanity's Last Exam page owns the methodology. This page keeps the published Humanity's Last Exam (With Tools) score next to live API $/M so you can pick a production SKU, not only a trophy number. Source: https://agi.safe.ai/