Compare models
Pick two to four models. No markup on model usage: you pay the provider's list price.
| Attribute |   Claude Mythos 5.1 |   DeepSeek V4 Pro |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Model id | anthropic/claude-mythos-5-1 | deepseek/deepseek-v4-pro |
| Status | Available via Safeguard | Available via Safeguard |
| Input / 1M tokens | $10 | $1.32 |
| Output / 1M tokens | $50 | $3.96 |
| 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. | Peak-hour list price (cache miss). Off-peak is half: $0.66 in / $1.98 out. Cache-hit input $0.044 peak. DeepSeek says it is phasing V4 Pro out but continues to serve it. |
| Context | 1M | 1M |
| Parameters | Not published | Not published |
| Max output | 128,000 tokens | 384,000 tokens |
| Modality | Text and image | Text |
| Weights | Closed | Open |
| Zero data retention | Not offered | Not stated |
| Prompts go to | Anthropic (global routing by default) | DeepSeek (People's Republic of China) |
| 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 | Privacy policy: personal data stored in the PRC and kept as long as necessary to provide the service, may be used to train models, with a right to opt out. No API-specific retention period or ZDR offering published |
| Region | Global by default, US-only inference via inference_geo at 1.1x pricing (Claude 4.6 and later) | China (PRC) |
| Price checked | 2026-10-08 | 2026-10-08 |
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