Gemini 3.1 Pro Preview API pricing

What is Gemini 3.1 Pro Preview?

Gemini 3.1 Pro Preview is a text model in the Outrun catalog. Its developer describes it for software engineering and reliable multi-step tool use. The standard rate is $1.26 in / $7.56 out per 1M tokens.

What are the Gemini 3.1 Pro Preview model details?

How do I call Gemini 3.1 Pro Preview?

Use your Outrun key and the exact model ID. Requests use prepaid USD credit.

curl https://api.outrun.to/v1/chat/completions \
  -H "Authorization: Bearer $OUTRUN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "gemini-3.1-pro-preview",
  "messages": [
    {
      "role": "user",
      "content": "Hello!"
    }
  ],
  "max_tokens": 8192
}'

import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.outrun.to/v1",
    api_key=os.environ["OUTRUN_API_KEY"],
)
reply = client.chat.completions.create(
    model="gemini-3.1-pro-preview",
    messages=[{"role": "user", "content": "Hello!"}],
    max_tokens=8192,
)
print(reply.choices[0].message.content)

Which tools work with Gemini 3.1 Pro Preview?

Any client that accepts an OpenAI-compatible base URL and a model ID can use gemini-3.1-pro-preview. Setup guides: Gemini CLI (Gemini models), Cline (OpenAI Compatible), OpenCode, SillyTavern, LiteLLM.

Use these setup values for this model ID. Recommended output settings can be lower than the route maximum.

How does Gemini 3.1 Pro Preview compare on cost?

Assumes 1,000 input + 300 output tokens per turn, repeated 1,000 times, at standard-tier rates without caching. Input / output shown per 1M tokens, rounded up to the cent.

Which similar models can I try?

Common questions about Gemini 3.1 Pro Preview

Where can I find more models?