Google
Gemini 3.1 Pro Preview Custom Tools Pricing
API pricing for Gemini 3.1 Pro Preview Custom Tools by Google. Input tokens cost $2/1M, output tokens cost $12/1M with 1M context window.
Last updated:
ReasoningToolsVision
Input Cost
$2
per 1M tokens
Output Cost
$12
per 1M tokens
Context Window
1M
tokens
Cost Calculator
Estimated Cost:
$0.00
Model Details
Provider Google
Model ID gemini-3.1-pro-preview-customtools
Context Window 1M tokens
Max Output 65536 tokens
Cache Read Cost $0.2/1M
Release Date 2026-02-19
Compare Alternatives
| Model | Input | Output | Context |
|---|---|---|---|
| Gemini 3.1 Pro Preview Custom Tools (this model) | $2 | $12 | 1M |
| Deep Research Max Preview (Apr-21-2026) Google | $2 | $12 | 131K |
| Deep Research Preview (Apr-21-2026) Google | $2 | $12 | 131K |
| Gemini 3 Pro Preview Google | $2 | $12 | 1M |
| Gemini 3.1 Pro Preview Google | $2 | $12 | 1M |
| GPT-5.6 Terra OpenAI | $2 | $12 | 1.1M |
Available from Resellers
Gemini 3.1 Pro Preview Custom Tools is also available through these resellers and gateways:
| Reseller | Model | Input | Output |
|---|---|---|---|
| 302.AI | gemini-2.5-flash-lite-preview-09-2025 | $0.1 | $0.4 |
| 302.AI | gemini-2.5-flash-preview-09-2025 | $0.3 | $2.5 |
| 302.AI | gemini-2.5-pro | $1.25 | $10 |
| 302.AI | gemini-3-flash-preview | $0.5 | $3 |
| 302.AI | gemini-3-pro-image-preview | $2 | $120 |
| 302.AI | gemini-3-pro-preview | $2 | $12 |
| 302.AI | gemini-3.1-flash-image-preview | $0.5 | $60 |
| Abacus | Gemini 2.5 Pro | $1.25 | $10 |
| Abacus | Gemini 3 Flash Preview | $0.5 | $3 |
| Abacus | Gemini 3.1 Flash Lite Preview | $0.25 | $1.5 |