Compare models
Pick two to four models. No markup on model usage: you pay the provider's list price.
| Attribute |   Claude Mythos 5.1 |  Gemini 3.8 Flash |
|---|---|---|
| Provider | Anthropic | |
| Model id | anthropic/claude-mythos-5-1 | google/gemini-3.8-flash |
| Status | Available via Safeguard | Available via Safeguard |
| Input / 1M tokens | $10 | $0.75 |
| Output / 1M tokens | $50 | $3.75 |
| 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. | Paid tier. $0.75 in / $3.75 out (output includes thinking tokens) through 2026-12-31, rises to $1.50 / $7.50 from 2027-01-01. |
| Context | 1M | 1.05M |
| Parameters | Not published | Not published |
| Max output | 128,000 tokens | 65,536 tokens |
| Modality | Text and image | Text and image |
| Weights | Closed | Closed |
| Zero data retention | Not offered | Not offered |
| Prompts go to | Anthropic (global routing by default) | Google (Gemini Developer API) |
| 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 | Paid tier: prompts and responses not used to improve Google products, but logged for a limited period for abuse monitoring, free tier content may be used to improve products |
| Region | Global by default, US-only inference via inference_geo at 1.1x pricing (Claude 4.6 and later) | No region guarantee, data may be stored transiently or cached in any country where Google operates. Google points ZDR and enterprise processing needs to Vertex AI (Gemini Enterprise Agent Platform) |
| Price checked | 2026-10-08 | 2026-10-08 |
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