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Gemini 3.1 Pro Preview Custom Tools API Pricing 2026

Compare pricing, benchmarks, and providers for Gemini 3.1 Pro Preview Custom Tools. Find the best value for your use case.

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Last updated: February 27, 2026 at 08:09 AM

Overview

Gemini 3.1 Pro Preview Custom Tools was released on February 25, 2026. Pricing starts at $2.00 per million input tokens and $12.00 per million output tokens. The model supports a context window of up to 1.0M tokens. API access is available through Google.

Context Window
1.0M
tokens
Pricing
Input$2.00
Output$12.00
Cached$0.200
per 1M tokens
Speed
Output-
TTFT-
median latency
Capabilities
VisionAudio InCaching

Pricing Comparison

Compare Gemini 3.1 Pro Preview Custom Tools with 10 similar models by price.

Current Pricing (per 1M tokens)

11 models

Provider
Model
Input $/M
Output $/M
Coding
MMLU
GPQA
Context
Actions
$2.000
$12.000
1,048,576
Try
$2.000
$8.000
18.1
57.7
39.0
256,000
Try
$2.000
$8.000
45.7
80.6
66.6
1,047,576
Try
$2.000
$8.000
128,000
Try
$2.000
$8.000
128,000
Try
$2.000
$6.000
14.8
53.7
33.2
65,536
Try
$2.000
$8.000
80.8
85.3
82.7
200,000
Try
$2.000
$6.000
29.3
69.7
48.6
131,072
Try
$2.000
$6.000
26.7
68.3
47.2
131,072
Try
$2.000
$6.000
26.1
70.1
50.5
131,072
Try
$2.000
$6.000
17.8
51.5
35.1
128,000
Try

* Some models use tiered pricing based on prompt length. Displayed prices are for prompts ≤ 200k tokens.

Compare Providers

Gemini 3.1 Pro Preview Custom Tools is available from multiple providers with different pricing and availability.

1
Providers
$2.000
Cheapest Input/M
$12.000
Cheapest Output/M
Google AI Studio
Best Price

Provider Pricing

1 models

Provider
Input $/M
Output $/M
Cache Read $/M
Cache Write $/M
Uptime
Google AI Studio
Google AI Studio
Best Price
$2.000
$12.000
-
-
-
Provider pricing data sourced from OpenRouter and Helicone

Community Rankings

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Cost vs. Quality

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Other models

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Frequently Asked Questions

Gemini 3.1 Pro Preview Custom Tools costs $0.002000 per 1,000 input tokens and $0.012000 per 1,000 output tokens.
Gemini 3.1 Pro Preview Custom Tools is available from 1 provider(s). Google AI Studio offers the best price.
We compare Gemini 3.1 Pro Preview Custom Tools with 10 similarly-priced models. See the benchmark scatter plot above to compare quality vs cost.

All Google Models

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