Gemini 3.1 Pro Preview vs Claude Sonnet 5.5 API pricing
Claude Sonnet 5.5 is cheaper on every example workload below. Prices last checked 2026-10-13.
| Gemini 3.1 Pro Preview (Google) | Claude Sonnet 5.5 (Anthropic) | |
|---|---|---|
| Input $/1M tokens | $2.0 | $2.0 |
| Output $/1M tokens | $12.0 | $10.0 |
| Context | — | — |
| Our tier (1–4) | 3 | 3 |
Example monthly bills
| Workload | Gemini 3.1 Pro Preview | Claude Sonnet 5.5 | Cheaper |
|---|---|---|---|
| Chat / Q&A 10M in / 2M out per month | $44.00 | $40.00 | Claude Sonnet 5.5 saves $4.00/mo (9%) |
| Coding 20M in / 5M out per month | $100.00 | $90.00 | Claude Sonnet 5.5 saves $10.00/mo (10%) |
| Output-heavy (reasoning, long answers) 10M in / 10M out per month | $140.00 | $120.00 | Claude Sonnet 5.5 saves $20.00/mo (14%) |
Fine print
- Gemini 3.1 Pro Preview: ≤200K prompt; >200K $4/$18; preview
Cost only, not quality. “Tier” is our rough capability judgment, not a benchmark, and different tokenizers count the same text differently. Reasoning models may bill extra thinking tokens as output. Official sources: Google, Anthropic.
See all models on the full price table, the Google and Anthropic pricing pages, or try the savings calculator with your own numbers.