Gemini 3.1 Pro Preview pricing & specs
Google · released 2026-02-19 · ● verified 2026-10-11
input / 1M$2.00
output / 1M$12.00
context1.05M
max output65.5K
// price history ($/1M tokens)
// cheaper or similar alternatives
| model | in | out | ctx | vs Gemini 3.1 Pro Preview |
|---|---|---|---|---|
| Gemini 2.5 Flash-Lite | $0.10 | $0.40 | 1.05M | −96.1% |
| Gemini 3.1 Flash Lite | $0.25 | $1.50 | 1.05M | −87.5% |
| Gemini 2.5 Flash | $0.30 | $2.50 | 1.05M | −81.1% |
| Gemini 3.5 Flash Lite | $0.30 | $2.50 | 1.05M | −81.1% |
| Gemini 3 Flash Preview | $0.50 | $3.00 | 1.05M | −75% |
// price by host
| host | in $/1M | out $/1M |
|---|---|---|
| Google Vertex AI | $2.00 | $12.00 |
// faq
How much does Gemini 3.1 Pro Preview cost?
Gemini 3.1 Pro Preview costs $2.00 per million input tokens and $12.00 per million output tokens. At 50M input and 10M output tokens per month that is about $220. Prompts above 200K tokens are billed at $4.00 input and $18.00 output.
What is the context window of Gemini 3.1 Pro Preview?
1.05M tokens, with up to 65.5K output tokens per request.
Does Gemini 3.1 Pro Preview support prompt caching?
Yes. Cached input tokens cost $0.20 per million.
What are cheaper alternatives to Gemini 3.1 Pro Preview?
Gemini 2.5 Flash-Lite ($0.10 in / $0.40 out), Gemini 3.1 Flash Lite ($0.25 in / $1.50 out), Gemini 2.5 Flash ($0.30 in / $2.50 out) offer the same input types and capabilities for less.
// spec sheet
- input / 1M
- $2.00
- output / 1M
- $12.00
- cache read / 1M
- $0.20
- > 200K ctx
- $4.00 / $18.00
- blended (3:1)
- $4.50
- context
- 1.05M
- max output
- 65.5K
- input types
- text · image · video · audio · pdf
- reasoning
- yes
- tool calling
- yes
- structured output
- yes
- open weights
- no
- knowledge cutoff
- 2025-01
- price source
// cost calculator
| model | in $/1M | out $/1M | = monthly |
|---|---|---|---|
| Gemini 2.5 Flash-Lite | $0.10 | $0.40 | $9.00 |
| Gemini 3.1 Flash Lite | $0.25 | $1.50 | $27.50 |
| Gemini 2.5 Flash | $0.30 | $2.50 | $40.00 |
| Gemini 3.1 Pro Preview | $2.00 | $12.00 | $220 |
Base-tier list prices. Long-context tiers, caching and batch discounts are not included.