Anthropic, unknown

# Claude Mythos Preview

> Claude Mythos Preview by Anthropic, released April 2026. 2 published benchmark results. Scores, sources and comparisons.
- Canonical page: https://noometry.com/models/claude-mythos-preview
- Last updated: 2026-10-10
- Title: Claude Mythos Preview Benchmarks, Price & Rank (October 2026)

Claude Mythos Preview by Anthropic has 2 published benchmark results on Noometry, not yet enough to be ranked.

Last verified October 10, 2026

## Specifications

- **Noometry rank:** Unranked
- **Index score:** Not ranked
- **Evidence:** Sparse 2 results
- **Provider:** [Anthropic](https://noometry.com/providers/anthropic)
- **Released:** April 7, 2026
- **Weights:** Unknown
- **Reasoning:** Unknown
- **Context window:** —
- **Max output:** —
- **Input price:** Not listed
- **Output price:** Not listed
- **Blended price:** Not listed
- **Output speed:** Not measured
- **Value:** Not ranked
- **Knowledge cutoff:** Unknown

## Category scores

Each category score combines every public result we have in that category.

Claude Mythos Preview category scores

1.  Agentic & Tool Use 41.4
2.  41.041.5

Claude Mythos Preview category ranks
| Category | Score | Rank | Results |
| --- | --- | --- | --- |
| [Agentic & Tool Use](https://noometry.com/best/agentic) | 41.4 | — | 1 |

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## Benchmark results

Every published result we track, with its source. Bold rows are the ones used for ranking; where several exist we prefer independent runs over self-reported numbers.

### Agentic & Tool Use

Claude Mythos Preview Agentic & Tool Use benchmark results
| Benchmark | Score | Position | Setting | Source | Date |
| --- | --- | --- | --- | --- | --- |
| [ExploitBench](https://noometry.com/benchmarks/exploitbench) | 73.8% | Best of 9 |  | [Epoch AI](https://epoch.ai/benchmarks) |  |
| [METR Time Horizons](https://noometry.com/benchmarks/metr-time-horizons) | 85.2% | Best of 32 |  | [Epoch AI](https://epoch.ai/benchmarks) |  |

## Compare Claude Mythos Preview

-   [Claude Mythos Preview vs GPT-6 Astra](https://noometry.com/compare/claude-mythos-preview-vs-gpt-6-astra)
-   [Claude Mythos Preview vs Claude Fable 5.1](https://noometry.com/compare/claude-fable-5-1-vs-claude-mythos-preview)
-   [Claude Mythos Preview vs Claude Opus 5.5](https://noometry.com/compare/claude-mythos-preview-vs-claude-opus-5-5)
-   [Claude Mythos Preview vs Claude Opus 5](https://noometry.com/compare/claude-mythos-preview-vs-claude-opus-5)
-   [Claude Mythos Preview vs Claude Fable 5](https://noometry.com/compare/claude-fable-5-vs-claude-mythos-preview)
-   [Claude Mythos Preview vs GPT-6.1 Sol](https://noometry.com/compare/claude-mythos-preview-vs-gpt-6-1-sol)
-   [Claude Mythos Preview vs Gemini 3.8 Flash](https://noometry.com/compare/claude-mythos-preview-vs-gemini-3-8-flash)
-   [Claude Mythos Preview vs Kimi K3](https://noometry.com/compare/claude-mythos-preview-vs-kimi-k3)
-   [Claude Mythos Preview vs Grok 4.6](https://noometry.com/compare/claude-mythos-preview-vs-grok-4-6)
-   [Claude Mythos Preview vs Qwen3.8 Max](https://noometry.com/compare/claude-mythos-preview-vs-qwen3-8-max)
-   [Claude Mythos Preview vs GLM-5.3](https://noometry.com/compare/claude-mythos-preview-vs-glm-5-3)
-   [Claude Mythos Preview vs Muse Spark 1.3](https://noometry.com/compare/claude-mythos-preview-vs-muse-spark-1-3)
-   [Claude Mythos Preview vs DeepSeek V4 Pro](https://noometry.com/compare/claude-mythos-preview-vs-deepseek-v4-pro)
-   [Claude Mythos Preview vs MiMo-V2.6-Pro](https://noometry.com/compare/claude-mythos-preview-vs-mimo-v2-6-pro)

## Other Anthropic models

-   [Claude Fable 5.1](https://noometry.com/models/claude-fable-5-1)69.0
-   [Claude Opus 5.5](https://noometry.com/models/claude-opus-5-5)68.6
-   [Claude Opus 5](https://noometry.com/models/claude-opus-5)67.8
-   [Claude Fable 5](https://noometry.com/models/claude-fable-5)66.8
-   [Claude Sonnet 5.5](https://noometry.com/models/claude-sonnet-5-5)61.9
-   [Claude Opus 4.8](https://noometry.com/models/claude-opus-4-8)60.7
-   [Claude Opus 4.7](https://noometry.com/models/claude-opus-4-7)58.3
-   [Claude Opus 4.6](https://noometry.com/models/claude-opus-4-6)58.2

## Frequently asked questions

### How good is Claude Mythos Preview?

Claude Mythos Preview by Anthropic has 2 published benchmark results on Noometry, not yet enough to be ranked.

### Is Claude Mythos Preview open source?

Anthropic has not published downloadable weights for Claude Mythos Preview that we can confirm.

### Cite this page

Noometry. (2026). Claude Mythos Preview benchmarks and pricing. Retrieved October 10, 2026, from https://noometry.com/models/claude-mythos-preview

Quote Noometry with a link back to this page. It is also available in [Markdown](https://noometry.com/md/models/claude-mythos-preview.md).