Claude Sonnet 5.5 vs Gemini 3.1 Pro
A plain comparison: what they do, what they cost and which to pick for your task.
In short
Claude Sonnet is stronger in writing and code; Gemini 3.1 Pro is handier when you need to go through a big document or spreadsheet. The price is almost the same.
Claude Sonnet 5.5 is cheaper: an answer costs 1.2 times less than with Gemini 3.1 Pro.
Side by side
| Claude Sonnet 5.5 | Gemini 3.1 Pro | |
|---|---|---|
| Maker | Anthropic, USA | Google, USA |
| Type | everyday | everyday |
| Good for | Claude’s everyday model. Natural writing and good code, the best value of the line. | Gemini Pro: works through long texts, spreadsheets and documents. |
| Official, $ per 1M | $2 / $10 | $2 / $12 |
| Freepay rate | ×1 / ×5 | ×1 / ×6 |
| Maker’s subscription | Claude Pro costs about $20 a month. | The paid Google AI plan costs about $20 a month. |
Prices: your text / answer. The “Freepay rate” shows how many balance tokens a model spends per token of its own; Claude Sonnet 5.5 is ×1.
Which to pick for the task
| Task | Better |
|---|---|
| Writing | Claude Sonnet 5.5 |
| Code | Claude Sonnet 5.5 |
| Large documents | Gemini 3.1 Pro |
| Summaries | Gemini 3.1 Pro |
The best way to choose is to ask both models the same question. On Freepay you do it in one chat, switching the model in the input field.
About Claude Sonnet 5.5
Claude’s everyday model. Natural writing and good code, the best value of the line. Claude is made by Anthropic, a US company. People pick it for natural writing, strong code and the way it handles long documents. More about Claude Sonnet 5.5.
About Gemini 3.1 Pro
Gemini Pro: works through long texts, spreadsheets and documents. Gemini is Google’s AI. It answers fast, works well with large documents and knows a lot of facts. More about Gemini 3.1 Pro.
Frequently asked questions
Which is better, Claude Sonnet 5.5 or Gemini 3.1 Pro?
Claude Sonnet is stronger in writing and code; Gemini 3.1 Pro is handier when you need to go through a big document or spreadsheet. The price is almost the same.
Which is cheaper, Claude Sonnet 5.5 or Gemini 3.1 Pro?
Claude Sonnet 5.5 is cheaper: an answer costs 1.2 times less than with Gemini 3.1 Pro. Official prices per 1M tokens: Claude Sonnet 5.5 $2 / $10, Gemini 3.1 Pro $2 / $12. On Freepay both are 10x cheaper.
Can I use Claude Sonnet 5.5 and Gemini 3.1 Pro in one place?
Yes. On Freepay both models are in one chat, you switch them in the input field, and the balance is shared.
Do I need two subscriptions for Claude Sonnet 5.5 and Gemini 3.1 Pro?
No. On claude.ai you need an account and a phone number, the free plan has tight message limits, and Claude Pro is a monthly subscription. Gemini needs a Google account, and the stronger models come with a paid Google AI plan. On Freepay one key covers both, with no subscription.