Google: Gemini 3.1 Pro Preview Custom Tools

Public pricingIntelligence 83/100Huge memory视觉深度思考工具调用

Google: Gemini 3.1 Pro Preview Custom Tools 是一款音频模型，适合智能体工作流与工具调用。它结合了多模态输入处理、可靠的工具调用与智能体表现、1M+ tokens上下文和均衡成本定位，可在audio understanding and multimodal input中提供可靠表现。它适合重视延迟、成本与吞吐的团队，能带来稳定输出、灵活部署与扩展空间。 它适合需要稳定回答、较长上下文、清晰结构和可扩展部署的团队。 它适合需要稳定回答、较长上下文、清晰结构和可扩展部署的团队。 它适合需要稳定回答、较长上下文、清晰结构和可扩展部署的团队。 它适合需要稳定回答、较长上下文、清晰结构和可扩展部署的团队。 它适合需要稳定回答、较长上下文、清晰结构和可扩展部署的团队。

Input

$2.00/1M

Output

$12.00/1M

Cached

$0.20/1M

Batch

$1.00/1M

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Technical specifications

Gemini 3.1 Pro Preview Custom Tools at a glance.

Memory

1,048,576

tokens

Max reply

65,536

tokens

Memory tier

Huge

multiple books or whole repositories

Tokenizer

sentencepiece

Released

Mar 2026

Training cutoff

Apr 2025

Availability

Public pricing

Status

active

Benchmarks

Quality benchmarks

Independent evaluations from public leaderboards. Higher is better.

  • swe_bench_verified

    75.62

  • gpqa_diamond

    94.1

  • frontiermath_tier_4

    16.7

  • humanitys_last_exam

    46.44

What it can do

Capabilities & limits.

  • Understands images
  • Deep step-by-step thinking
  • Uses tools / calls functions
  • Strict JSON output
  • Streams replies
  • Fine-tunable on your data

When to pick Gemini 3.1 Pro Preview Custom Tools

  • Multi-step reasoning, research agents, or hard math.
  • Screenshot analysis, image understanding, or document OCR.
  • Agentic workflows that call tools or APIs.
  • Long documents, full codebases, or extensive chat histories.

When to look elsewhere

  • Very latency-sensitive, real-time apps where every millisecond counts.

Alternatives

Similar models to compare.

FAQ

Gemini 3.1 Pro Preview Custom Tools — the questions we see most.

Pricing, capabilities, alternatives — generated from the same data that powers the calculator above.

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At a typical workload of 50,000 conversations a month with 1,500-token prompts and 800-token replies, Gemini 3.1 Pro Preview Custom Tools costs roughly $630 per month. Input is $2.00 /1M tokens and output is $12.00 /1M tokens.
Gemini 3.1 Pro Preview Custom Tools has a 1,048,576-token context window (huge memory — multiple books or whole repositories). That means you can fit about 196,608 words of input and history in a single call.
Beyond text generation, Gemini 3.1 Pro Preview Custom Tools supports understanding images, deep step-by-step reasoning, calling functions / tools, strict JSON output, fine-tuning on your own data. It streams replies by default.
Gemini 3.1 Pro Preview Custom Tools was released in March 2026, with training data cut off around April 2025.
Models in a similar class include Gemini 3.1 Pro Preview, Gemini 2.5 Pro, Gemini 2.5 Pro Preview 05-06. The "Similar models" section below this FAQ links into each.

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