# Claude Mythos Preview vs Fugu Cyber

> Side-by-side benchmark comparison for Claude Mythos Preview and Fugu Cyber across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-mythos-preview-vs-sakana-fugu-cyber
- Last updated: September 29, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude Mythos Preview and Fugu Cyber share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Fugu Cyber has the lower published output-token price.
- Fugu Cyber has the larger published context window at 1M.

## Model Snapshot

| Property | Claude Mythos Preview | Fugu Cyber |
|----------|----------|----------|
| Creator | Anthropic | Sakana AI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | null | 1M |
| Independent public score (not head-to-head) | null | null |
| Benchmarks Covered | 2 | 2 |
| Pricing (input/output) | $25.00 / $125.00 | $6.00 / $36.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude Mythos Preview public-lane score: Coming soon
- Fugu Cyber public-lane score: Coming soon

| Benchmark | Claude Mythos Preview | Fugu Cyber | Winner |
|-----------|-----------|-----------|--------|
| CyberGym | 83.1% | 86.9% | Fugu Cyber |
| ExploitGym | 17.5% | Coming soon | Coming soon |
| CTI-REALM | Coming soon | 72.1% | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude Mythos Preview and Fugu Cyber?

Not yet. The models share only 1 sourced benchmark row, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Claude Mythos Preview vs Claude Mythos 5](/compare/claude-mythos-5-vs-claude-mythos-preview)
- [Fugu Cyber vs Claude Mythos 5](/compare/claude-mythos-5-vs-sakana-fugu-cyber)
- [Claude Mythos Preview vs Claude Mythos 5.1](/compare/claude-mythos-5-1-vs-claude-mythos-preview)
- [Fugu Cyber vs Claude Mythos 5.1](/compare/claude-mythos-5-1-vs-sakana-fugu-cyber)

## Explore More

- [Claude Mythos Preview profile](/models/claude-mythos-preview)
- [Fugu Cyber profile](/models/sakana-fugu-cyber)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)