AIAIFindr.app
Go

Google: Gemini 3.1 Pro Preview Custom Tools

by Google

Video & AudioChatbots & LLMs
9.2
Quality score / 10
Visit Google: Gemini 3.1 Pro Preview Custom Tools →Paid$2.00/1M tokens

Overview

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...

Our take

Placed against the broader field of agentic models, this variant occupies a narrow but useful niche: it is a version of Gemini 3.1 Pro tuned specifically to improve tool selection, preventing overuse of a general bash tool when a more efficient third-party tool would serve better. That matters in a workflow where an agent has many tools wired up and you want it reaching for the right one, such as querying a database through a dedicated connector instead of shelling out. It carries a 1,048,756-token context window, chain-of-thought reasoning, image input, and structured JSON output, and is listed as both a video tool and an assistant. Among its stated alternatives, it differs from Gemini Flash Latest or the Flash Lite tier by being a Pro-class reasoner with sharper tool discipline, priced at $2.00 per 1M tokens, which the data marks above average. Ideal for teams building tool-heavy agents who have watched a model default to generic shell commands and want more deliberate tool routing. Pick it when disciplined tool selection is a real pain point in your agent stack; if your setup uses few tools, the plain Pro preview covers the same ground without the specialization.

How Google: Gemini 3.1 Pro Preview Custom Tools stacks up

Among the 64 video & audio tools in our directory, it ranks #1 of 44 on quality (9.2/10), 8% above the 44-tool average of 8.5, and its $2/1M input-token rate is in the premium end — 207% pricier than the 27-model average of $0.65/1M.

Weighing quality against cost, Google: Gemini 3.1 Pro Preview Custom Tools's cost-per-quality-point of $0.22 places it at #22 of 24 for value among video & audio tools.

Google: Gemini 3.1 Pro Preview Custom Tools in depth

Google: Gemini 3.1 Pro Preview Custom Tools, built by Google, sits in the video & audio and chatbots & llms space and is a paid tool starting at $2.00/1M tokens. Our editors rate it 9.2 out of 10 based on capability, ecosystem and value. It handles a context window of 1,048,576 tokens.

On the feature side, Google: Gemini 3.1 Pro Preview Custom Tools brings 1,048,576-token context window, vision (image input), reasoning / chain-of-thought and tool / function calling. These are the capabilities that most shape day-to-day use and separate it from thinner alternatives.

Its biggest strength is large 1,048,576-token context window, bigger than most models listed here, while the main trade-off to weigh is that above-average api pricing ($2 per 1m input tokens). Keep both in mind when deciding whether it fits your workflow.

Google: Gemini 3.1 Pro Preview Custom Tools is most often chosen for content creation, research and writing. If that matches your goals, it's a strong candidate to shortlist.

Speed
—
Context window
1,048,576 tokens
Free tier
No
Updated
2026-08-15

Key features

  • ✓1,048,576-token context window
  • ✓Vision (image input)
  • ✓Reasoning / chain-of-thought
  • ✓Tool / function calling
  • ✓Structured (JSON) outputs

Pricing

$2.00/1M tokens
Pay per token
Paid$2.00/1M tokens
API input
$2 / 1M tokens
API output
$12 / 1M tokens
See full API pricing → llmprice.app

Pros

  • +Large 1,048,576-token context window, bigger than most models listed here
  • +Built-in reasoning (chain-of-thought) mode for harder problems
  • +Accepts images as input (vision-capable)
  • +Supports tool / function calling for agent-style workflows

Cons

  • −Above-average API pricing ($2 per 1M input tokens)

Who should use Google: Gemini 3.1 Pro Preview Custom Tools

  • →Anyone looking for a video & audio and chatbots & llms tool from Google.
  • →Teams and individuals focused on content creation, research and writing.
  • →People who value large 1,048,576-token context window, bigger than most models listed here.
  • →Workflows that need a 1,048,576 tokens context window.

Who should look elsewhere

  • →Anyone who needs a free tier — this tool is paid only.
  • →Those for whom above-average api pricing ($2 per 1m input tokens) is a dealbreaker.

Best for

Content CreationResearchWriting

10 Best Google: Gemini 3.1 Pro Preview Custom Tools Alternatives in 2026

Google: Gemini 3.1 Pro Preview Custom Tools is a strong video & audio tool, but it is not the only option. Whether you are after a lower price, different features or a better fit for your workflow, here are the 10 best alternatives to Google: Gemini 3.1 Pro Preview Custom Tools, ranked and compared.

1
Google: Gemini 3.7 Flash (batch)Paid$0.19/1M tokens

Google

Gemini 3.7 Flash is a multimodal model from Google for fast agentic workflows, coding, and complex multi-step…

+ Large 1,048,576-token context window, bigger than most models listed here+ Built-in reasoning (chain-of-thought) mode for harder problems+ Accepts images as input (vision-capable)
Read full Google: Gemini 3.7 Flash (batch) review →
2
Meta: Muse Spark 1.2Paid$1.25/1M tokens

Meta

Muse Spark 1.2 is a reasoning model from Meta, designed for complex agentic tasks.

+ Large 1,048,576-token context window, bigger than most models listed here+ Built-in reasoning (chain-of-thought) mode for harder problems+ Accepts images as input (vision-capable)
Read full Meta: Muse Spark 1.2 review →
3
Google: Gemini 3.6 Flash (batch)Paid$0.38/1M tokens

Google

Gemini 3.6 Flash is a high-efficiency model from Google for coding, agentic workflows, and web and app development.

+ Large 1,048,576-token context window, bigger than most models listed here+ Built-in reasoning (chain-of-thought) mode for harder problems+ Accepts images as input (vision-capable)
Read full Google: Gemini 3.6 Flash (batch) review →
4
Google: Gemini 3.5 Flash Lite (batch)Paid$0.15/1M tokens

Google

Gemini 3.5 Flash Lite is a high-efficiency model from Google with upgraded agentic capabilities.

+ Low API price — $0.15 per 1M input tokens, cheaper than roughly 75% of comparable models+ Large 1,048,576-token context window, bigger than most models listed here+ Built-in reasoning (chain-of-thought) mode for harder problems
Read full Google: Gemini 3.5 Flash Lite (batch) review →
5
Meta: Muse Spark 1.1Paid$1.25/1M tokens

Meta

Muse Spark 1.1 is a multimodal reasoning model from Meta, built for agentic tasks.

+ Large 1,048,576-token context window, bigger than most models listed here+ Built-in reasoning (chain-of-thought) mode for harder problems+ Accepts images as input (vision-capable)
Read full Meta: Muse Spark 1.1 review →
6
ClaudeFree tier$20/mo

Anthropic

Claude is Anthropic's family of AI assistants, known for long-context reasoning, careful writing and strong coding…

+ Best-in-class long-document reasoning+ Natural, high-quality writing+ Strong safety and reliability
Read full Claude review →
7
ChatGPTFree tier$20/mo

OpenAI

ChatGPT is OpenAI's flagship conversational AI, powering hundreds of millions of weekly users across web, mobile and…

+ Most polished and widely supported ecosystem+ Excellent general reasoning and coding+ Huge third-party integration support
Read full ChatGPT review →
8
GeminiFree tier$20/mo

Google DeepMind

Gemini is Google's natively multimodal model family, deeply integrated across Search, Workspace, Android and the Pixel…

+ Massive context window+ Tight integration with Google ecosystem+ Generous free access
Read full Gemini review →
9
Qwen: Qwen3.8 MaxPaid$2.00/1M tokens

Qwen

Qwen3.8 Max is the flagship model in Alibaba's Qwen3.8 series, the general-availability successor to the Qwen3.8 Max…

+ Large 1,000,000-token context window, bigger than most models listed here+ Built-in reasoning (chain-of-thought) mode for harder problems+ Accepts images as input (vision-capable)
Read full Qwen: Qwen3.8 Max review →
10
Qwen: Qwen3.7 FlashPaid$0.03/1M tokens

Qwen

Qwen3.7 Flash is a vision-language reasoning model from Alibaba. It is suited for multimodal agents, visual coding…

+ Low API price — $0.03 per 1M input tokens, cheaper than roughly 75% of comparable models+ Large 1,000,000-token context window, bigger than most models listed here+ Built-in reasoning (chain-of-thought) mode for harder problems
Read full Qwen: Qwen3.7 Flash review →

Google: Gemini 3.1 Pro Preview Custom Tools vs top alternatives

A side-by-side look at how Google: Gemini 3.1 Pro Preview Custom Tools stacks up against its closest rivals.

FeatureGoogle: Gemini 3.1 Pro Preview Custom ToolsGoogleGoogle: Gemini 3.7 Flash (batch)GoogleMeta: Muse Spark 1.2MetaGoogle: Gemini 3.6 Flash (batch)Google
Quality score9.2 / 109.2 / 109.2 / 109.2 / 10
Starting price$2.00/1M tokens$0.19/1M tokens$1.25/1M tokens$0.38/1M tokens
Free tierNoNoNoNo
API input price$2 / 1M tokens$0.1875 / 1M tokens$1.25 / 1M tokens$0.375 / 1M tokens
API output price$12 / 1M tokens$0.9375 / 1M tokens$4.25 / 1M tokens$1.875 / 1M tokens
Speed————
Context window1,048,576 tokens1,048,576 tokens1,048,576 tokens1,048,576 tokens
CategoriesVideo & Audio, Chatbots & LLMsVideo & Audio, Chatbots & LLMsVideo & Audio, Chatbots & LLMsVideo & Audio, Chatbots & LLMs
Key features
  • 1,048,576-token context window
  • Vision (image input)
  • Reasoning / chain-of-thought
  • Tool / function calling
  • 1,048,576-token context window
  • Vision (image input)
  • Reasoning / chain-of-thought
  • Tool / function calling
  • 1,048,576-token context window
  • Vision (image input)
  • Reasoning / chain-of-thought
  • Tool / function calling
  • 1,048,576-token context window
  • Vision (image input)
  • Reasoning / chain-of-thought
  • Tool / function calling
Pros
  • + Large 1,048,576-token context window, bigger than most models listed here
  • + Built-in reasoning (chain-of-thought) mode for harder problems
  • + Accepts images as input (vision-capable)
  • + Supports tool / function calling for agent-style workflows
  • + Large 1,048,576-token context window, bigger than most models listed here
  • + Built-in reasoning (chain-of-thought) mode for harder problems
  • + Accepts images as input (vision-capable)
  • + Supports tool / function calling for agent-style workflows
  • + Large 1,048,576-token context window, bigger than most models listed here
  • + Built-in reasoning (chain-of-thought) mode for harder problems
  • + Accepts images as input (vision-capable)
  • + Supports tool / function calling for agent-style workflows
  • + Large 1,048,576-token context window, bigger than most models listed here
  • + Built-in reasoning (chain-of-thought) mode for harder problems
  • + Accepts images as input (vision-capable)
  • + Supports tool / function calling for agent-style workflows
Cons
  • − Above-average API pricing ($2 per 1M input tokens)
  • − No free tier — usage is billed per token
  • − Above-average API pricing ($1.25 per 1M input tokens)
  • − No free tier — usage is billed per token

Frequently asked questions

Q. Is Google: Gemini 3.1 Pro Preview Custom Tools free?

No — Google: Gemini 3.1 Pro Preview Custom Tools is a paid tool, starting at $2.00/1M tokens.

Q. How much does Google: Gemini 3.1 Pro Preview Custom Tools cost?

Google: Gemini 3.1 Pro Preview Custom Tools starts at $2.00/1M tokens. API usage is around $2 per 1M input tokens and $12 per 1M output tokens.

Q. What is Google: Gemini 3.1 Pro Preview Custom Tools best for?

Google: Gemini 3.1 Pro Preview Custom Tools is best suited to content creation, research and writing, within the video & audio and chatbots & llms category.

Q. What are the best Google: Gemini 3.1 Pro Preview Custom Tools alternatives?

Popular alternatives to Google: Gemini 3.1 Pro Preview Custom Tools include Google: Gemini 3.7 Flash (batch), Meta: Muse Spark 1.2, Google: Gemini 3.6 Flash (batch) and Google: Gemini 3.5 Flash Lite (batch). Each trades off price, quality and ecosystem differently.

Q. Is there a free alternative to Google: Gemini 3.1 Pro Preview Custom Tools?

Yes. Claude, ChatGPT, Gemini offer a free tier, making them good starting points if you want to avoid an upfront subscription.

Q. Why switch from Google: Gemini 3.1 Pro Preview Custom Tools?

Common reasons include pricing, specific feature gaps (Above-average API pricing ($2 per 1M input tokens)), data-privacy requirements, or simply wanting a tool that fits your stack better.

How we rate AI tools

Our quality score weighs capability on real tasks, breadth of features and integrations, pricing and value, and how actively the tool is maintained. Scores are editorial guidance, not benchmarks — always trial a tool on your own workflow before committing. Pricing and features change frequently, so verify current details on the official site.

Ready to try Google: Gemini 3.1 Pro Preview Custom Tools?

Start with the official plans and upgrade as you grow.

Visit Google: Gemini 3.1 Pro Preview Custom Tools →