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Google: Gemini 3.1 Pro Preview Custom Tools API Pricing
Gemini 3.1 Pro Preview Custom Tools is a variant of Gemini 3.1 Pro that improves tool selection behavior by preventing overuse of a general bash tool when more efficient third-party...
How much does Google: Gemini 3.1 Pro Preview Custom Tools cost for a real workload?
At 10M input + 2M output tokens per month, Google: Gemini 3.1 Pro Preview Custom Tools costs about $44 ($20 input + $24 output). Try your own volumes in the cost calculator.
What are cheaper alternatives to Google: Gemini 3.1 Pro Preview Custom Tools?
- MoonshotAI: Kimi K3 (batch) — $2.28 in / $11.4 out per 1M
- Xiaomi: MiMo-V2.6-Pro-UltraSpeed — $4.35 in / $8.7 out per 1M
- OpenAI: GPT Audio — $2.5 in / $10 out per 1M
- Cohere: Command A — $2.5 in / $10 out per 1M
- OpenAI: GPT-4o (2024-11-20) — $2.5 in / $10 out per 1M
- Cohere: Command R+ (08-2024) — $2.5 in / $10 out per 1M
Compare Google: Gemini 3.1 Pro Preview Custom Tools with other models
Google: Gemini 3.1 Pro Preview Custom Tools vs Google: Gemma 4 26B A4B (free)Google: Gemini 3.1 Pro Preview Custom Tools vs Google: Gemma 4 31B (free)Google: Gemini 3.1 Pro Preview Custom Tools vs Google: Lyria 3 Pro PreviewGoogle: Gemini 3.1 Pro Preview Custom Tools vs Google: Lyria 3 Clip PreviewGoogle: Gemini 3.1 Pro Preview Custom Tools vs Google: Gemma 3 4BGoogle: Gemini 3.1 Pro Preview Custom Tools vs Google: Gemma 3 12B
Frequently asked questions
How much does Google: Gemini 3.1 Pro Preview Custom Tools cost?
Google: Gemini 3.1 Pro Preview Custom Tools costs $2 per 1M input tokens and $12 per 1M output tokens (list price, snapshot October 21, 2026). At 10M input + 2M output tokens per month that is about $44.
What is the context window of Google: Gemini 3.1 Pro Preview Custom Tools?
Google: Gemini 3.1 Pro Preview Custom Tools has a context window of 1,048,576 tokens and can return up to 65,536 output tokens per response.
What are cheaper alternatives to Google: Gemini 3.1 Pro Preview Custom Tools?
Cheaper models include MoonshotAI: Kimi K3 (batch) ($2.28 in / $11.4 out), Xiaomi: MiMo-V2.6-Pro-UltraSpeed ($4.35 in / $8.7 out), OpenAI: GPT Audio ($2.5 in / $10 out). See the full list on this page.
Is Google: Gemini 3.1 Pro Preview Custom Tools free to use?
No. Google: Gemini 3.1 Pro Preview Custom Tools is a paid model at $2 input / $12 output per 1M tokens. 20 free models are listed on the free models page.
Provider: google · Model ID: google/gemini-3.1-pro-preview-customtools · Modality: text+image+file+audio+video->text · Price snapshot October 21, 2026, refreshed daily. How we collect prices