Claude Mythos 5.1 vs Gemini 3.8 Flash Cyber
At a Glance
| Compare | Claude Mythos 5.1Anthropic |  Gemini 3.8 Flash CyberGoogle DeepMind |
|---|---|---|
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $10.00Anthropic ↗ · Sep 2, 2026 | Not reported |
| Output priceFrom · USD / 1M tokens | $50.00Anthropic ↗ · Sep 2, 2026 | Not reported |
| Context windowMaximum documented tokens | 1,000K | Not reported |
| Model facts checked | Sep 2, 2026View model evidence → | Sep 2, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
Side-by-Side Facts
| Field | Claude Mythos 5.1 | Gemini 3.8 Flash Cyber |
|---|---|---|
| Developer | Anthropic | Google DeepMind |
| Family | Claude 5 1 | Gemini 3 |
| Model | Claude Mythos 5.1 | Gemini 3.8 Flash Cyber |
| Version | Claude Mythos 5.1 | Gemini 3.8 Flash Cyber |
| Lifecycle | active | active |
| Released | 2026-09-01 | 2026-09-02 |
| Knowledge cutoff | 2026-06-01 | Unknown |
| Input modalities | Text, Image | Text |
| Output modalities | Text | Text |
| Context window | 1,000K | Unknown |
| Total parameters | Unknown | Unknown |
| Active parameters | Unknown | Unknown |
| License | Unknown | Unknown |
| Open weights | No | No |
| API available | Yes | No |
| Self-hostable | No | No |
| Provider access | Anthropic (Project Glasswing) | Unknown |
| Capabilities | chat, generation, reasoning, tools | automated-patching, cybersecurity, reasoning, vulnerability-detection |
Claude Mythos 5.1 Capabilities
Gemini 3.8 Flash Cyber Capabilities
Related Comparisons
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|---|---|---|---|
Claude Fable 5.1Anthropic | vs | Claude Mythos 5.1Anthropic | family variantsimage, text |
Claude Mythos 5.1Anthropic | vs | Gemini 3.1 ProGoogle DeepMind | cross-developer peerstext |
Claude Mythos 5.1Anthropic | vs | Grok 4.6xAI | cross-developer peersimage, text |
Claude Mythos 5.1Anthropic | vs |  Kimi-K3Moonshot AI | cross-developer peersimage, text |
Claude Mythos 5.1Anthropic | vs | Claude Sonnet 5Anthropic | family variantsimage, text |
Claude Fable 5Anthropic | vs | Claude Mythos 5.1Anthropic | family variantsimage, text |
Claude Mythos 5.1Anthropic | vs | Claude Opus 5Anthropic | family variantsimage, text |
Claude Mythos 5.1Anthropic | vs |  GPT-4.1 NanoOpenAI | cross-developer peersimage, text |
Claude Mythos 5.1Anthropic | vs | GPT-5.6 SolOpenAI | cross-developer peersimage, text |
Claude Mythos 5.1Anthropic | vs |  Qwen3.7 MaxQwen | cross-developer peersimage, text |
Claude Mythos 5.1Anthropic | vs | Grok 4.3xAI | cross-developer peersimage, text |
Primary Evidence
Sources and Freshness
Questions
Claude Mythos 5.1 vs Gemini 3.8 Flash Cyber FAQs
Is Claude Mythos 5.1 or Gemini 3.8 Flash Cyber better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Claude Mythos 5.1 and Gemini 3.8 Flash Cyber, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Claude Mythos 5.1 or Gemini 3.8 Flash Cyber?+
Only Claude Mythos 5.1 has a directly sourced input price: $10.00 per million tokens. Only Claude Mythos 5.1 has a directly sourced output price: $50.00 per million tokens.
Which has a larger context window, Claude Mythos 5.1 or Gemini 3.8 Flash Cyber?+
Claude Mythos 5.1 has a sourced context window of 1,000,000 tokens; Gemini 3.8 Flash Cyber's context window is not reported. A larger limit cannot be determined.
Which performs better in benchmarks, Claude Mythos 5.1 or Gemini 3.8 Flash Cyber?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Claude Mythos 5.1 or Gemini 3.8 Flash Cyber be self-hosted?+
Both models have the same sourced self-hosting status: unsupported. Claude Mythos 5.1 is not marked open weight; Gemini 3.8 Flash Cyber is not marked open weight.
Can Claude Mythos 5.1 and Gemini 3.8 Flash Cyber understand images?+
Claude Mythos 5.1 is documented with image input; Gemini 3.8 Flash Cyber is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Claude Mythos 5.1 or Gemini 3.8 Flash Cyber?+
Claude Mythos 5.1 has a sourced maximum output of 128,000 tokens; Gemini 3.8 Flash Cyber's maximum output is not reported. A larger limit cannot be determined.
Do Claude Mythos 5.1 and Gemini 3.8 Flash Cyber support reasoning and tool use?+
Claude Mythos 5.1: reasoning, tool calling, and image input. Gemini 3.8 Flash Cyber: reasoning. Feature support does not establish relative quality.
Which is available from more inference providers, Claude Mythos 5.1 or Gemini 3.8 Flash Cyber?+
Claude Mythos 5.1 has 1 sourced provider route; Gemini 3.8 Flash Cyber has 0, so Claude Mythos 5.1 has broader tracked availability.
Which offers better value, Claude Mythos 5.1 or Gemini 3.8 Flash Cyber?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.