Google: Gemini 3.1 Pro Preview✓ Catalog verified
Gemini 3.1 Pro Preview is Google’s frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage across complex workflows. Building on the multimodal foundation...
Overview
Gemini 3.1 Pro Preview is Google’s frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage across complex workflows. Building on the multimodal foundation...
Access: available through the official Google API. Context window: 1.0M.
Specifications
| API identifier | google/gemini-3.1-pro-preview |
| Provider | |
| Model type | Multimodal LLM |
| Context window | 1.0M catalog |
| Input modalities | audio · file · image · text · video |
| Output modalities | text |
| Released | Feb 19, 2026 |
| Tokenizer | Gemini |
| Moderated | No |
| Architecture modality | text+image+file+audio+video->text |
API defaults
{
"top_k": null,
"top_p": null,
"temperature": null,
"presence_penalty": null,
"frequency_penalty": null,
"repetition_penalty": null
}Pricing
Live pricing components for google/gemini-3.1-pro-preview as published in the catalog.
| Pricing component | Raw unit price | Normalized | Unit |
|---|---|---|---|
| Prompt tokens | $0.000002 | $2.00 / 1M | Per input token |
| Completion tokens | $0.000012 | $12.00 / 1M | Per output token |
| Request fee | N/A | N/A | Per request |
| Image fee | $0.000002 | $0.000002 | Per image unit |
| Web search fee | $0.014 | $0.014000 | Per search request |
Cost calculator
Estimate monthly spend from your own token volumes.
Estimated Total Cost
$3.4Calculated from current list pricing in the ModelsAtlas catalog.Capabilities
| Capability | Status | What it means |
|---|---|---|
| Visual Understanding | ✓ Supported | Image and document analysis support |
| Audio Processing | ✓ Supported | Speech and voice aligned flows |
| Tool Calling | ✓ Supported | Supports tools / function calling |
| Self-Hosting | Not advertised | Deploy outside managed APIs |
Capability signals
Directional signals derived from model metadata and capability tags — not official benchmark submissions.
Quick start
Call Google: Gemini 3.1 Pro Preview through an OpenAI-compatible client.
from openai import OpenAI
client = OpenAI(
base_url="https://openrouter.ai/api/v1",
api_key="YOUR_API_KEY"
)
response = client.chat.completions.create(
model="google/gemini-3.1-pro-preview",
messages=[{"role": "user", "content": "Explain quantum physics."}]
)
print(response.choices[0].message.content)Alternatives
Closest models by context window from a different provider.
| Model | Provider | Context | Input /1M | Actions |
|---|---|---|---|---|
| DeepSeek: DeepSeek V4 Flash 0423 | DeepSeek | 1.0M | $0.04 | View → |
| DeepSeek: DeepSeek V4 Flash 0731 (batch) | DeepSeek | 1.0M | $0.11 | View → |
Head-to-head comparisons
Side-by-side breakdowns of Google: Gemini 3.1 Pro Preview against other frontier models.
Sources & attribution
Pricing and metadata are maintained in the ModelsAtlas catalog.
Frequently asked questions
How much does Google: Gemini 3.1 Pro Preview cost?
$2.00 per 1M input tokens and $12.00 per 1M output tokens on the official Google API.
What is the context window of Google: Gemini 3.1 Pro Preview?
Google: Gemini 3.1 Pro Preview supports up to 1.0M tokens of context.
Does Google: Gemini 3.1 Pro Preview support tool / function calling?
Yes, Google: Gemini 3.1 Pro Preview supports tool / function calling — you can register tools and the model will emit structured tool calls.
How do I access Google: Gemini 3.1 Pro Preview?
Use the official Google API with the model id `google/gemini-3.1-pro-preview`. See the Quick start section above for code examples.