Claude Sonnet 5.5 vs Gemini 3.1 Pro Preview: Pricing and Specs
Claude Sonnet 5.5 $2 / $10 vs Gemini 3.1 Pro Preview $2 / $12 per 1M tokens in / out.
| Claude Sonnet 5.5 | Gemini 3.1 Pro Preview | |
|---|---|---|
| Maker | Anthropic | |
| Input, per 1M tokens | $2 | $2 |
| Output, per 1M tokens | $10 | $12 |
| Context window | 1M tokens claude.com | 1,048,576 input tokens google.dev |
| Max output | 128K tokens claude.com | 65,536 tokens google.dev |
| Input types | Text, Image claude.com | Text, Image, Video, Audio, PDF google.dev |
| Output types | Text claude.com | Text google.dev |
| Released | Sep 28, 2026 claude.com | Feb 19, 2026 google.com |
| Retirement | Not sooner than September 28, 2027 claude.com | Not published in the docs we read |
| Price checked | Nov 9, 2026 anthropic.com | Nov 9, 2026 google.dev |
| Tracked changes | 2 | 0 |
Facts side by side from each maker's own pages. No score and no verdict.
Recent changes
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Questions
Which is cheaper, Claude Sonnet 5.5 or Gemini 3.1 Pro Preview
They list the same price: $2 per 1M input tokens.
What do 1M input and 1M output tokens cost on each
Claude Sonnet 5.5: $12. Gemini 3.1 Pro Preview: $14. Listed standard prices, before caching or batch discounts.
What context window does each have
Claude Sonnet 5.5: 1M tokens. Gemini 3.1 Pro Preview: 1,048,576 input tokens. From each maker's docs.
Who makes Claude Sonnet 5.5 and Gemini 3.1 Pro Preview
Claude Sonnet 5.5 is made by Anthropic. Gemini 3.1 Pro Preview is made by Google.