How much does Gemini 3.1 Pro Preview Customtools cost?

Gemini 3.1 Pro Preview Customtools costs $2.00 per 1M input tokens and $12.00 per 1M output tokens. Prices are sourced from official Google documentation.

Is Gemini 3.1 Pro Preview Customtools available via API?

Yes. Gemini 3.1 Pro Preview Customtools is available via the Gemini API. Tickerr monitors its uptime and latency every 5 minutes.

Tickerr / Pricing / Gemini / Gemini 3.1 Pro Preview Customtools

Gemini 3.1 Pro Preview Customtools

Operational· provider status page

Google · Geminiplans & subscription pricing

API pricing — per 1M tokens

Input

$2.00

Output

$12.00

Cached input

$0.20

Batch input

—

Effective from Apr 30, 2026. Source: official provider documentation.

Cost calculator

Estimated monthly cost · 70% input / 30% output split

cheapestGemini Live 2.5 Flash Preview Native Audio 09.2025$0.810

Gemini 2.5 Flash Native Audio Preview 12.2025$0.960

Gemini 3.1 Flash Live Preview$1.87

Gemini Pro Latest$3.88

Gemini 3.1 Pro Preview Customtools$5.00

Gemini 3 Pro Preview$5.00

Other Gemini models

Gemini Pro Latest$1.25/1M Gemini 2.5 Flash Native Audio Preview 12.2025$0.30/1M Gemini 3.1 Flash Live Preview$0.75/1M Gemini Live 2.5 Flash Preview Native Audio 09.2025$0.30/1M Gemini 3 Pro Preview$2.00/1M Gemini 3 Flash Preview$0.50/1M Gemini 3.1 Pro Preview$2.00/1M Gemini Robotics Er 1.5 Preview$0.30/1M

See all Gemini models →

Also: All LLM models · Geminiplans & subscription pricing · Token cost calculator