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Google: Gemini 3.1 Pro Preview Custom Tools

Advanced Gemini model for complex reasoning, coding, and multimodal analysis

Source-linked gemini-pro Closed weights Released 2026-02-19
API record Report
InputT
OutputT
Input price$2/M
Output price$12/M
Context1.04858M
Max output65.536K
Providers11
Inference availability

Providers

Provider-specific identifiers, limits, and listed prices per million tokens. Every row links back to the provider's own documentation.

Report a price
Providers offering Gemini 3.1 Pro Preview Custom Tools
ProviderProvider model IDContextMax outputInputOutputCache readCapabilitiesDocs
Kilo Gateway google/gemini-3.1-pro-preview-customtools 1.04858M 65.536K $2 $12 $0.2 ReasoningToolsJSON Docs ↗
Eden AI google/gemini-3.1-pro-preview-customtools 1.04858M 65.536K $2 $12 $0.2 ReasoningToolsJSON Docs ↗
Vertex gemini-3.1-pro-preview-customtools 1.04858M 65.536K $2 $12 $0.2 ReasoningToolsJSON Docs ↗
OrcaRouter google/gemini-3.1-pro-preview-customtools 1.04858M 65.536K $2 $12 $0.2 ReasoningToolsJSON Docs ↗
Merge Gateway google/gemini-3.1-pro-preview-customtools 1.04858M 65.536K $2 $12 $0.2 ReasoningToolsJSON Docs ↗
OpenRouter google/gemini-3.1-pro-preview-customtools 1.04858M 65.536K $2 $12 $0.2 ReasoningToolsJSON Docs ↗
Databricks databricks-gemini-3-1-pro 1.04858M 65.536K $2 $12 $0.2 ReasoningToolsJSON Docs ↗
NanoGPT google/gemini-3.1-pro-preview-customtools 1.04858M 65.536K $2 $12 $0.2 ReasoningToolsJSON Docs ↗
Neon gemini-3-1-pro 1.04858M 65.536K $2 $12 $0.2 ReasoningToolsJSON Docs ↗
Google gemini-3.1-pro-preview-customtools 1.04858M 65.536K $2 $12 $0.2 ReasoningToolsJSON Docs ↗
AIHubMix gemini-3.1-pro-preview-customtools 1.04858M 65.536K $2 $12 $0.2 ReasoningToolsJSON Docs ↗

Capability badges appear only where the provider catalog explicitly lists support. A blank cell means the source is silent, not that the feature is absent.

Listed rates

Price across providers

Input price per million tokens as published by each provider. Bars are drawn from listed rates only — no traffic weighting, since the catalog observes no requests.

Lowest input $2/M

Across 11 priced providers

Median input $2/M

Midpoint of listed rates

Highest input $2/M

Same as the lowest listed rate

Output range $12 – $12

Per million output tokens

Kilo Gateway $2/M
Eden AI $2/M
Vertex $2/M
OrcaRouter $2/M
Merge Gateway $2/M
OpenRouter $2/M
Databricks $2/M
NanoGPT $2/M
Neon $2/M
Google $2/M
AIHubMix $2/M
Cost calculator

Estimate a workload

$0.00
Excludes taxes, non-token charges, and tiered discounts.

11 providers list the identical $2 input rate, so price alone will not separate them — compare context limits, max output, and capabilities above.

Specification

Capabilities

Recorded from the source catalog and provider listings.

Reasoning Yes
Tool calling Yes
Structured output Yes
Attachments Yes
Vision input Yes
× Open weights No
Creator
Google
Model family
gemini-pro
Knowledge cutoff
2025-01
License
Not documented
Release date
2026-02-19
Model ID
google/gemini-3.1-pro-preview-customtools
Published evaluations

Benchmarks

Every result stays attached to its source, version, metric and harness. Scores from different versions are never merged, and the profile below plots each benchmark against its own population rather than on a shared scale.

Benchmark registry
No published benchmark results

ModelBench does not infer quality from price, context size, or model name. When a source publishes a comparable result, it appears here with its version and link.

Read the methodology
Catalog activity

Change log

Field-level changes detected between successful source imports.

Full change log
No changes recorded

This record has not changed within the retained import history.

Provenance

Sources & verification

Every figure on this page traces back to one of these records.

Methodology
Public API

Use this record

Fetch the complete source-linked model record. No key, no account, no rate-limited tier.

API documentation
Endpoint
GET https://model.kyssta.lol/api/v1/models/google/gemini-3.1-pro-preview-customtools
curl
curl "https://model.kyssta.lol/api/v1/models/google/gemini-3.1-pro-preview-customtools"
Common questions

Frequently asked questions

Answered directly from the stored record — nothing here is generated beyond the catalog's own fields.

What is Gemini 3.1 Pro Preview Custom Tools?

Advanced Gemini model for complex reasoning, coding, and multimodal analysis. It is published by Google and catalogued here from Models.dev.

How much does Gemini 3.1 Pro Preview Custom Tools cost?

Listed input pricing starts at $2 per million tokens from Kilo Gateway.

What is the context length of Gemini 3.1 Pro Preview Custom Tools?

Gemini 3.1 Pro Preview Custom Tools accepts up to 1.04858M tokens of context and returns up to 65.536K output tokens.

Does Gemini 3.1 Pro Preview Custom Tools support tool calling and structured output?

Provider catalogs list support for tool calling, structured output, reasoning, and image input.

Which providers serve Gemini 3.1 Pro Preview Custom Tools?

11 providers list this model: Kilo Gateway, Eden AI, Vertex, OrcaRouter, Merge Gateway, OpenRouter and 5 more.

Are the weights for Gemini 3.1 Pro Preview Custom Tools open?

No. This model is served through hosted APIs only.

When was Gemini 3.1 Pro Preview Custom Tools released?

The catalog records a release date of 2026-02-19, last verified Sep 11, 2026.

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