Google · Flagship model
Gemini 3.1 Pro pricing & cost calculator
Prices last updated:
Input
$2.00
per 1M tokens
Output
$12.00
per 1M tokens
Context window
1.05M
1,048,576 tokens
Price shown is for prompts up to 200K tokens; longer prompts are billed at $4 / $18.
About Gemini 3.1 Pro pricing
Gemini 3.1 Pro is Google’s top-tier model, aimed at the hardest reasoning, coding and agentic work. It is billed per token: $2.00 for every million tokens you send and $12.00 for every million tokens it generates, so output costs 6× as much as input.
For a typical request of 1,000 input and 500 output tokens, Gemini 3.1 Pro costs about $0.008 — the 9th-cheapest of the 14 models we track. One million input tokens is roughly 2,000 pages of English prose.
With Google’s batch API (50% off, results within 24 hours) the rate drops to $1.00 input and $6.00 output per million tokens.
Google’s official pricing page is the source of truth; see our guide to how AI pricing works for caching and long-context rules.
Gemini 3.1 Pro cost calculator
- Per request
- $0.008
- Per day
- $8.00
- Per month (30 days)
- $240.00
What Gemini 3.1 Pro costs for common tasks
| Task | Input tokens | Output tokens | Per request | Per 1,000 requests |
|---|---|---|---|---|
| Short chat reply | 500 | 300 | $0.0046 | $4.60 |
| Support chatbot turn with history | 3,000 | 400 | $0.0108 | $10.80 |
| RAG answer (retrieved context) | 6,000 | 600 | $0.0192 | $19.20 |
| Summarize a 20-page document | 12,000 | 1,000 | $0.036 | $36.00 |
| Long-document analysis | 100,000 | 2,000 | $0.224 | $224.00 |
Compare Gemini 3.1 Pro with…
Other Google models first.
- Gemini 3.1 Pro vs Gemini 3.8 Flash$0.75 in · $3.75 out per 1M
- Gemini 3.1 Pro vs GPT-6 Astra$10.00 in · $50.00 out per 1M
- Gemini 3.1 Pro vs GPT-5.6 Sol$5.00 in · $30.00 out per 1M
- Gemini 3.1 Pro vs GPT-5.6 Terra$2.00 in · $12.00 out per 1M
- Gemini 3.1 Pro vs GPT-5.6 Luna$0.20 in · $1.20 out per 1M
- Gemini 3.1 Pro vs Claude Fable 5.1$10.00 in · $50.00 out per 1M
- Gemini 3.1 Pro vs Claude Opus 5.5$4.00 in · $20.00 out per 1M
- Gemini 3.1 Pro vs Claude Opus 5$5.00 in · $25.00 out per 1M
- Gemini 3.1 Pro vs Claude Sonnet 5$2.00 in · $10.00 out per 1M
- Gemini 3.1 Pro vs Claude Haiku 4.5$1.00 in · $5.00 out per 1M
- Gemini 3.1 Pro vs Grok 4.7$2.00 in · $6.00 out per 1M
- Gemini 3.1 Pro vs DeepSeek V4 Pro$0.435 in · $0.87 out per 1M
- Gemini 3.1 Pro vs DeepSeek V4 Flash$0.14 in · $0.28 out per 1M
Gemini 3.1 Pro pricing FAQ
- How much does Gemini 3.1 Pro cost per token?
- Gemini 3.1 Pro costs $2.00 per million input tokens and $12.00 per million output tokens through the Google API. That is $0.000002 per input token and $0.000012 per output token.
- How much does a typical Gemini 3.1 Pro request cost?
- A request with 1,000 input tokens and 500 output tokens costs about $0.008 on Gemini 3.1 Pro, or $8.00 per thousand requests.
- What is the context window of Gemini 3.1 Pro?
- Gemini 3.1 Pro accepts up to 1,048,576 tokens (about 1.05M) of context per request, which covers the prompt, any documents you include and the conversation history.
- Does Gemini 3.1 Pro have batch pricing?
- Yes. Google's batch API processes requests asynchronously (typically within 24 hours) at 50% off, bringing Gemini 3.1 Pro to $1.00 input and $6.00 output per million tokens.
- How accurate is the token count for Gemini 3.1 Pro?
- It is an estimate. Google does not publish a browser tokenizer for Gemini 3.1 Pro, so Tokenova counts with o200k_base and applies a Google-specific adjustment. Expect real counts within roughly 10–20% for English text; use Google's token-counting API for exact numbers.