Google model
Gemini 3.1 Pro Preview Custom Tools API cost calculator
Gemini 3.1 Pro Preview Custom Tools costs $2 per 1M input tokens and $12 per 1M output tokens on the Google API, with a 1.0M-token context window. A typical request (2K input, 500 output tokens) costs $0.01 — about $300/month at 1,000 requests per day. Use the calculator below to model your exact workload.
Find me a cheaper modelWhat real workloads cost on Gemini 3.1 Pro Preview Custom Tools
| Workload | Tokens (in / out) | Per request | Per 1K requests |
|---|---|---|---|
| Chatbot message | 500 / 300 | $0.0046 | $4.60 |
| RAG query with context | 4,000 / 500 | $0.01 | $14.00 |
| Document summarization | 20,000 / 1,000 | $0.05 | $52.00 |
| Agent coding session | 100,000 / 5,000 | $0.26 | $260 |
Gemini 3.1 Pro Preview Custom Tools vs other Google models
| Model | Input /1M | Output /1M | Context |
|---|---|---|---|
| Gemini 3.1 Pro Preview Custom Tools | $2 | $12 | 1.0M |
| Gemini 3.7 Flash | $0.38 | $1.88 | 1.0M |
| Gemini 3.6 Flash | $0.75 | $3.75 | 1.0M |
| Gemini 3.5 Flash Lite | $0.30 | $2.50 | 1.0M |
| Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) | $0.25 | $1.50 |
Frequently asked questions
How much does Gemini 3.1 Pro Preview Custom Tools cost per 1M tokens?
According to current pricing data, Gemini 3.1 Pro Preview Custom Tools costs $2 per 1M input tokens and $12 per 1M output tokens. Processing 1M tokens each way costs $14.00.
What does a typical API request to Gemini 3.1 Pro Preview Custom Tools cost?
A typical request with 2,000 input tokens and 500 output tokens costs $0.01. At 1,000 requests per day that is $10.00 daily, or about $300 per month.
What is Gemini 3.1 Pro Preview Custom Tools's context window?
Gemini 3.1 Pro Preview Custom Tools supports a 1.0M-token context window (1,048,576 tokens).
Does Gemini 3.1 Pro Preview Custom Tools support prompt caching?
Yes. Cached input tokens cost $0.20 per 1M — a 90% discount versus the standard input rate, which matters for agents and chat apps that resend the same system prompt.
What is a cheaper alternative to Gemini 3.1 Pro Preview Custom Tools?
Ling-2.6-flash from Inclusionai is currently the cheapest comparable option at $0.01 per 1M input tokens versus $2 for Gemini 3.1 Pro Preview Custom Tools — roughly 200x cheaper on input.
Prices may differ from Google's official pricing page for batch, tiered, or fine-tuned usage. Compare all current prices on the live model pricing dashboard, see Gemini 3.1 Pro Preview Custom Tools vs Ling-2.6-flash pricing, or run Gemini 3.1 Pro Preview Custom Tools head-to-head against other models in the side-by-side comparison playground.
Pricing data via the OpenRouter models API.