Claude Mythos 5.1 vs Qwen3.8 Flash
At a Glance
| Compare | Claude Mythos 5.1Anthropic |  Qwen3.8 FlashQwen |
|---|---|---|
| Intelligence, Cost, and Efficiency | ||
| CostLower is better · Published-token output estimate | UnrankedNot in the 44-model eligible cohort | #4 of 44$0.021 per LiveBench case |
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $10.00Anthropic ↗ · Sep 2, 2026 | $0.113Deepinfra ↗ · Sep 21, 2026 |
| Output priceFrom · USD / 1M tokens | $50.00Anthropic ↗ · Sep 2, 2026 | $0.382Deepinfra ↗ · Sep 21, 2026 |
| Context windowMaximum documented tokens | 1,000K | 1,000K |
| Model facts checked | Sep 2, 2026View model evidence → | Aug 29, 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 | Qwen3.8-Flash |
|---|---|---|
| Developer | Anthropic | Qwen |
| Family | Claude 5 1 | Qwen3 8 Flash |
| Model | Claude Mythos 5.1 | Qwen3.8-Flash |
| Version | Claude Mythos 5.1 | Qwen3.8-Flash |
| Lifecycle | active | active |
| Released | 2026-09-01 | Unknown |
| Knowledge cutoff | 2026-06-01 | Unknown |
| Input modalities | Text, Image | Text, Image, Video |
| Output modalities | Text | Text |
| Context window | 1,000K | 1,000K |
| Total parameters | Unknown | Unknown |
| Active parameters | Unknown | Unknown |
| License | Unknown | Unknown |
| Open weights | No | No |
| API available | Yes | Yes |
| Self-hostable | No | No |
| Provider access | Anthropic (Project Glasswing) | Alibaba Cloud Model Studio (Standard), Deepinfra (Standard), Openrouter (Standard), Together Ai (Standard) |
| Capabilities | chat, generation, reasoning, tools | agents, chat, computer-use, reasoning, structured_outputs, tools, vision |
Claude Mythos 5.1 Capabilities
Qwen3.8 Flash Capabilities
Related Comparisons
All image comparisons →| A | Pair | B | Context |
|---|---|---|---|
Claude Mythos 5.1Anthropic | vs |  GPT-6 AstraOpenAI | cross-developer peersimage, text |
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 |  DeepSeek-V4.1-FlashDeepSeek | cross-developer peersimage, text |
Claude Mythos 5.1Anthropic | vs | Grok 4.6xAI | cross-developer peersimage, text |
Claude Mythos 5.1Anthropic | vs | Qwen3.8-MaxQwen | cross-developer peersimage, text |
Claude Mythos 5.1Anthropic | vs |  Kimi-K3Moonshot AI | cross-developer peersimage, text |
 MiniMax-M3MiniMax | vs | Claude Mythos 5.1Anthropic | cross-developer peersimage, text |
Claude Mythos 5.1Anthropic | vs |  GLM-5.3Z.ai | cross-developer peerstext |
Claude Mythos 5.1Anthropic | vs |  Hy4 previewTencent | cross-developer peerstext |
Claude Mythos 5.1Anthropic | vs | Seed 2.1 ProByteDance Seed | cross-developer peersimage, text |
Claude Mythos 5.1Anthropic | vs |  Mistral Large 3Mistral AI | cross-developer peersimage, text |
Primary Evidence
Sources and Freshness
Questions
Claude Mythos 5.1 vs Qwen3.8 Flash FAQs
Is Claude Mythos 5.1 or Qwen3.8 Flash better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Claude Mythos 5.1 and Qwen3.8 Flash, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Claude Mythos 5.1 or Qwen3.8 Flash?+
Claude Mythos 5.1 is $10.00 and Qwen3.8 Flash is $0.113 per million tokens, so Qwen3.8 Flash is cheaper on this metric. Claude Mythos 5.1 is $50.00 and Qwen3.8 Flash is $0.382 per million tokens, so Qwen3.8 Flash is cheaper on this metric.
Which has a larger context window, Claude Mythos 5.1 or Qwen3.8 Flash?+
Neither model has a larger sourced context window in this comparison. Claude Mythos 5.1 is 1,000K and Qwen3.8 Flash is 1,000K.
Which performs better in benchmarks, Claude Mythos 5.1 or Qwen3.8 Flash?+
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 Qwen3.8 Flash be self-hosted?+
Both models have the same recorded self-hosting status: unsupported. Claude Mythos 5.1 is not marked open weight; Qwen3.8 Flash is not marked open weight.
Can Claude Mythos 5.1 and Qwen3.8 Flash understand images?+
Claude Mythos 5.1 is documented with image input; Qwen3.8 Flash is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Claude Mythos 5.1 or Qwen3.8 Flash?+
Qwen3.8 Flash has the larger sourced maximum output: Claude Mythos 5.1 supports 128K and Qwen3.8 Flash supports 131K output tokens.
Do Claude Mythos 5.1 and Qwen3.8 Flash support reasoning and tool use?+
Claude Mythos 5.1: reasoning, tool calling, and image input. Qwen3.8 Flash: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Claude Mythos 5.1 or Qwen3.8 Flash?+
Claude Mythos 5.1 has 1 sourced provider route; Qwen3.8 Flash has 4, so Qwen3.8 Flash has broader tracked availability.
Which offers better value, Claude Mythos 5.1 or Qwen3.8 Flash?+
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.