Best Claude Mythos Preview Alternatives in 2026
Claude Mythos Preview scores 6.5/10 on our tests. Here are 4 alternatives worth considering in the AI LLMs & Models space.
Claude Mythos Preview
Anthropic's most capable model -- a gated research preview via Project Glasswing, cybersecurity-specialized. 73% success on expert CTF tasks, 32-step autonomous network attacks. Not generally available.
Top Alternatives, Ranked
Meta's first model from its Superintelligence Lab -- natively multimodal with Contemplating mode for multi-agent reasoning
Anthropic's flagship LLM -- Opus 4.7 (launched April 16, 2026) with 1M-token context, high-res vision, new xhigh reasoning level, and the most natural conversational style
Google's LLM with deep Google Workspace integration, 2M token context window, and native code execution
Score Comparison
| Tool | Ease of Use | Output Quality | Value | Features | Overall |
|---|---|---|---|---|---|
| Claude Mythos Preview(current) | 2.0 | 10.0 | 5.0 | 9.0 | 6.5 |
| Muse Spark (Meta) | 9.0 | 8.0 | 10.0 | 8.0 | 8.8 |
| Claude (Anthropic) | 9.0 | 9.0 | 8.0 | 8.0 | 8.5 |
| Gemini (Google) | 8.0 | 8.0 | 9.0 | 8.0 | 8.3 |
| Grok | 7.0 | 7.5 | 7.5 | 8.0 | 7.5 |
Not sure which to pick?
Read our full reviews or use the comparison tool to see how they stack up head-to-head.