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Google: Gemini 3.1 Pro Preview

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. $2 per million input tokens, $12 per million output tokens. 1,048,576 token context window, maximum output of 65,536 tokens. Higher uptime with 2 providers. Includes independent benchmarks from Artificial Analysis.

View source on OpenRouter
Overview

Model specifications

Context
1,048,576 tokens
Maximum output
65,536 tokens
Architecture
text+image+file+audio+video->text
Tokenizer
Gemini
Knowledge cutoff
Not provided
Moderated
No
OPENROUTER

Complete pricing

Synchronized OpenRouter rates. Token prices are shown per one million tokens.

Input
$2
/M tokens
  • ≤200K$2
  • >200K$4
Output
$12
/M tokens
  • ≤200K$12
  • >200K$18
Cache read
$0.2
/M tokens
  • ≤200K$0.2
  • >200K$0.4
Cache write
$0.375
/M tokens
Image Input
$2
/M tokens
Input Audio
$2
/M tokens
  • ≤200K$2
  • >200K$4
Input Audio Cache
$0.2
/M tokens
  • ≤200K$0.2
  • >200K$0.4
Web search
$14
/1K calls
API

Model configuration

Reasoning

Moderated
Yes
Default parameters
medium
Capabilities
high, medium, low
API

Quick start

Call this exact model ID through OpenRouter’s OpenAI-compatible API.

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"google/gemini-3.1-pro-preview","messages":[{"role":"user","content":"Hello!"}]}'
Capabilities

Input → Output

Input
audiofileimagetextvideo
Output
text
Reasoning

No · high · medium · low

API

Supported API parameters

include_reasoningmax_tokensreasoningreasoning_effortresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_p
Available providers

6 providers

Live providers on OpenRouter

Provider availability, latency, throughput and routing can change continuously. Open the source page for current operational data.

OpenRouter

Google AI Studio

unknown
Context
1.0M
Maximum output
66K
Input
$2.00
Output
$12.00
Cache read
$0.200
Cache write
$0.375

Google AI Studio

unknown
Context
1.0M
Maximum output
66K
Input
$1.00
Output
$6.00
Cache read
$0.100
Cache write
$0.188

Google AI Studio

unknown
Context
1.0M
Maximum output
66K
Input
$3.60
Output
$21.60
Cache read
$0.360
Cache write
$0.675

Google

unknown
Context
1.0M
Maximum output
66K
Input
$2.00
Output
$12.00
Cache read
$0.200
Cache write
$0.375

Google

unknown
Context
1.0M
Maximum output
66K
Input
$1.00
Output
$6.00
Cache read
$0.100
Cache write
$0.188

Google

unknown
Context
1.0M
Maximum output
66K
Input
$3.60
Output
$21.60
Cache read
$0.360
Cache write
$0.675
google

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Gemini 3.6 Flash is a high-efficiency model from Google for coding, agentic workflows, and web and app development. It is designed to produce polished outputs with fewer unnecessary edits and...

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Gemini 3.6 Flash is a high-efficiency model from Google for coding, agentic workflows, and web and app development. It is designed to produce polished outputs with fewer unnecessary edits and...

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Output
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Input: $0.375Output: $1.88per 1M tokens
View model details →