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 or user-defined functions are available. This specialized preview endpoint significantly increases function calling reliability and ensures the model selects the most appropriate tool in coding agents and complex, multi-tool workflows.
$1.00
$0.10
$6.00
Throughput is how fast the model writes (tokens per second, higher is better). Time to first token is how long before the answer starts (lower is better).
Share of requests served without a server error. Client errors (4xx) do not count.
Not enough throughput data
Not enough TTFT data
Works with the OpenAI SDK pointed at our base URL. Every parameter is in the API reference.
Tokens processed per day on NagaAI.
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 or user-defined functions are available.
On NagaAI, Gemini 3.1 Pro Preview Custom Tools costs $1 per 1M input tokens and $6 per 1M output tokens. You pay only for what you use, with no subscription.
Gemini 3.1 Pro Preview Custom Tools reads up to 1.0M tokens in one request, counting the prompt and the answer together.
Yes. Gemini 3.1 Pro Preview Custom Tools can call your functions as tools and can answer in a JSON schema you give it.
It takes text, images, audio and files as input and returns text.
Create an API key, copy the model ID from the top of this page and send requests with the OpenAI or Anthropic SDK pointed at NagaAI. The API section on this page has a ready example.
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