Compare models
Pick two to four models. No markup on model usage: you pay the provider's list price.
| Attribute |   Claude Opus 5.5 |  Gemini 3.1 Pro (Preview) |
|---|---|---|
| Provider | Anthropic | |
| Model id | anthropic/claude-opus-5-5 | google/gemini-3.1-pro-preview |
| Status | Available via Safeguard | Available via Safeguard |
| Input / 1M tokens | $4 | $2 |
| Output / 1M tokens | $20 | $12 |
| Price notes | Base price, full 1M context at standard rate. Cache hits $0.20/1M. Batch 50% off. US-only inference 1.1x. | Preview model. Prompts <=200K tokens, over 200K: $4 in / $18 out. Output includes thinking tokens. No free tier. |
| 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 | Available | Not offered |
| Prompts go to | Anthropic (global routing by default) | Google (Gemini Developer API) |
| Retention | Not used for model training without express permission, per Anthropic's API retention doc, conversation content is not retained by default except for Covered Models that require 30-day retention, flagged content and legal holds can be kept longer | 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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