Anthropic, unknown
Claude Mythos Preview
Claude Mythos Preview by Anthropic has 2 published benchmark results on Noometry, not yet enough to be ranked.
Last verified
Specifications
- Noometry rank
- Unranked
- Index score
- Not ranked
- Evidence
- Sparse 2 results
- Provider
- 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.
- Agentic & Tool Use 41.4
| Category | Score | Rank | Results |
|---|---|---|---|
| Agentic & Tool Use | 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
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| ExploitBench | 73.8% | Best of 9 | Epoch AI | ||
| METR Time Horizons | 85.2% | Best of 32 | Epoch AI |
Compare Claude Mythos Preview
- Claude Mythos Preview vs GPT-6 Astra
- Claude Mythos Preview vs Claude Fable 5.1
- Claude Mythos Preview vs Claude Opus 5.5
- Claude Mythos Preview vs Claude Opus 5
- Claude Mythos Preview vs Claude Fable 5
- Claude Mythos Preview vs GPT-6.1 Sol
- Claude Mythos Preview vs Gemini 3.8 Flash
- Claude Mythos Preview vs Kimi K3
- Claude Mythos Preview vs Grok 4.6
- Claude Mythos Preview vs Qwen3.8 Max
- Claude Mythos Preview vs GLM-5.3
- Claude Mythos Preview vs Muse Spark 1.3
- Claude Mythos Preview vs DeepSeek V4 Pro
- Claude Mythos Preview vs MiMo-V2.6-Pro
Other Anthropic models
- Claude Fable 5.169.0
- Claude Opus 5.568.6
- Claude Opus 567.8
- Claude Fable 566.8
- Claude Sonnet 5.561.9
- Claude Opus 4.860.7
- Claude Opus 4.758.3
- Claude Opus 4.658.2
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.