Rate
Claude Sonnet 5.5 vs Gemini 3.1 Pro: price
Claude Sonnet 5.5 is 1.1× cheaper than Gemini 3.1 Pro for a typical chat (1,500 tokens in, 500 out).
| Item | Claude Sonnet 5.5 | Gemini 3.1 Pro |
|---|---|---|
| Input per 1M tokens | $2.00 | $2.00 |
| Output per 1M tokens | $10.00 | $12.00 |
| Cached input per 1M | $0.10 | $0.20 |
| 1,000 chat messages1,500 tokens in, 500 out each | $8.00 | $9.00 |
| Summarize a 50-page PDF30,000 tokens in, 1,000 out | $0.07 | $0.072 |
| One coding-agent task60,000 tokens in, 4,000 out, no caching | $0.16 | $0.168 |
List prices checked November 5, 2026. Price is half the story: see how people rate each one today.
Claude Sonnet 5.5 vs Gemini 3.1 Pro in numbers
Output, usually the bigger part of the bill, costs $10.00 on Claude Sonnet 5.5 and $12.00 on Gemini 3.1 Pro, so Claude Sonnet 5.5 is 1.2× cheaper there. Input costs the same, $2.00 per million tokens. For a coding-agent task (60,000 tokens in, 4,000 out) that is $0.16 on Claude Sonnet 5.5 and $0.168 on Gemini 3.1 Pro. Claude Sonnet 5.5 accepts 1M tokens of context and Gemini 3.1 Pro 1.05M tokens. Claude Sonnet 5.5 came out on September 28, 2026 and Gemini 3.1 Pro on February 19, 2026.
Claude Sonnet 5.5 is made by Anthropic; Gemini 3.1 Pro by Google. Estimate your own bill for both in the cost calculator.
Which one feels dumber today?
- Claude Sonnet 5.5Anthropic
–no votes yet - Gemini 3.1 ProGoogle–no votes yet
Frequently asked questions
Is Claude Sonnet 5.5 or Gemini 3.1 Pro cheaper?
Claude Sonnet 5.5 is 1.1× cheaper than Gemini 3.1 Pro for a typical chat (1,500 tokens in, 500 out). Output, usually the bigger part of the bill, costs $10.00 on Claude Sonnet 5.5 and $12.00 on Gemini 3.1 Pro, so Claude Sonnet 5.5 is 1.2× cheaper there.
Which is better, Claude Sonnet 5.5 or Gemini 3.1 Pro?
It depends on the task, and price is only part of it. Check how people rate each one today on the Claude Sonnet 5.5 and Gemini 3.1 Pro pages, and read what users report in Discussions.