Last refreshed 2026-06-15. 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.
Compare Gemini 3.1 Pro Preview Custom Tools across 2 providers to find the best fit for your use caseInput / 1M
$2.00
Output / 1M
$12.00
Cache
read $0.20
Batch
Not sourced
Setup recipe
Docs fallbackInstall
Use the provider REST API or SDKAuth
Create a provider API keyCall
model: google/gemini-3.1-pro-preview-customtoolsModel ID
google/gemini-3.1-pro-preview-customtoolsRequest example
Curated snippets for this provider are not sourced yet. Use OpenRouter documentation with model ID
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".
Compare Gemini 3.1 Pro Preview Custom Tools Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| OpenRouter | $2.00 | $12.00 |
| Google AI Studio | $2.00 | $12.00 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $2.00 |
| Output tokens | $12.00 |
Capabilities
VisionMultimodalStructured Outputs
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.
Get Started
Model Specs
Released2026-01-01
Context1M
ArchitectureDecoder Only
Knowledge cutoff2025-01