Last refreshed 2026-05-11. Next refresh: weekly.
Why use Gemini 3.1 Pro Preview Custom Tools on OpenRouter?
OpenRouter offers Gemini 3.1 Pro Preview Custom Tools with pay-as-you-go pricing at $2.00/1M input tokens. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Setup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: google/gemini-3.1-pro-preview-customtoolsgoogle/gemini-3.1-pro-preview-customtoolsRequest example
google/gemini-3.1-pro-preview-customtools.Gotchas
- Use provider model ID "google/gemini-3.1-pro-preview-customtools", not the LLMReference slug "gemini-3.1-pro-preview-customtools".
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $2.00 |
| Output tokens | $12.00 |
Capabilities
About Gemini 3.1 Pro Preview Custom Tools
Google: Gemini 3.1 Pro Preview Custom Tools available via OpenRouter. Pricing: $2/1M input, $12/1M output.
FAQ
What does Gemini 3.1 Pro Preview Custom Tools cost on OpenRouter?
On OpenRouter, Gemini 3.1 Pro Preview Custom Tools costs $2 per 1M input tokens and $12 per 1M output tokens.
What is the context window for Gemini 3.1 Pro Preview Custom Tools on OpenRouter?
Gemini 3.1 Pro Preview Custom Tools supports a 1.05m token context window on OpenRouter.
What API model ID do I use for Gemini 3.1 Pro Preview Custom Tools on OpenRouter?
Use the model ID google/gemini-3.1-pro-preview-customtools when calling OpenRouter's API.
Who created Gemini 3.1 Pro Preview Custom Tools?
Gemini 3.1 Pro Preview Custom Tools was created by Google DeepMind as part of the Gemini 3.1 model family.
Is Gemini 3.1 Pro Preview Custom Tools open source?
Gemini 3.1 Pro Preview Custom Tools's open source status is unknown in the seed data.