Claude Mythos 5.1 vs Qwen3.8 Max
Claude Mythos 5.1 from Anthropic and Qwen3.8 Max from Alibaba Cloud (Qwen), side by side. Every figure comes from the model registry. No markup on model usage: you pay the provider's list price.
| Attribute |   Claude Mythos 5.1 |  Qwen3.8 Max |
|---|---|---|
| Provider | Anthropic | Alibaba Cloud (Qwen) |
| Model id | anthropic/claude-mythos-5-1 | qwen/qwen3.8-max |
| Status | Available via Safeguard | Available via Safeguard |
| Input / 1M tokens | $10 | $2 |
| Output / 1M tokens | $50 | $6 |
| Price notes | Base price, same as Claude Fable 5.1. Anthropic requires the organization to be verified through one of its programs before use. Cache hits $0.25/1M. Batch 50% off. | International (Singapore) deployment, 0 to 1M input tokens, both modes. |
| Context | 1M | 1M |
| Parameters | Not published | Not published |
| Max output | 128,000 tokens | Not published |
| Modality | Text and image | Text and image |
| Weights | Closed | Closed |
| Zero data retention | Not offered | Not stated |
| Prompts go to | Anthropic (global routing by default) | Alibaba Cloud Model Studio (prices shown are for the Singapore / International deployment) |
| Retention | Not used for model training without express permission. Claude Mythos 5.1 is a Covered Model that requires 30-day data retention and is not available under ZDR unless Anthropic expressly authorizes it | Alibaba Cloud states it never uses your data for model training, Model Studio stores data generated from model calls as required by law (no period stated) |
| Region | Global by default, US-only inference via inference_geo at 1.1x pricing (Claude 4.6 and later) | Singapore (International) for these prices, other regions such as China (Beijing), Hong Kong, Frankfurt, Virginia and Tokyo have separate price lists |
| Price checked | 2026-10-08 | 2026-10-08 |
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