Reasoning Controls
OpenRouter lists GPT-5.5 with reasoning support and explicit reasoning-related request parameters.
Google
Gemini 3.5 Flash
Gemini 3.5 Flash provides sustained frontier-level intelligence optimized for real-world tasks at a higher speed and lower cost. Designed for the agentic era, it excels at sub-agent deployment, multi-step workflows, and long-horizon tasks at scale. This model is particularly effective for rapid agentic loops involving complex coding cycles and iterations.
May 19, 2026
$9.00 /MTok context
65,536 tokens output
Text
Image
File
Video
Tools
Structured Output
Model Overview
High-signal model metadata in a structured two-column overview table.
Provider
The entity that provides this model.
Google
Model ID
The routed model identifier exposed by upstream providers.
google/gemini-3.5-flash
Input Context Window
The number of tokens supported by the input context window.
$9.00 /MTok
tokens
Maximum Output Tokens
The number of tokens that can be generated by the model in a single request.
65,536 tokens
tokens
Open Source
Whether the model's code is available for public use.
No
Release Date
When the model was first released.
May 19, 2026
15 days ago
Knowledge Cut-off Date
When the model's knowledge was last updated.
2025-01-01
API Providers
The providers that offer this model. This is not an exhaustive list.
Google, Google AI Studio
Modalities
Types of data this model can process.
Text
Image
Audio
Video
File
What is Gemini 3.5 Flash
A fuller summary of positioning, capabilities, and source-specific details for Gemini 3.5 Flash.
Gemini 3.5 Flash is Google's high-efficiency multimodal model, bringing near-Pro level coding and reasoning at Flash-tier cost and speed. It is highly optimized for coding proficiency and parallel agentic execution...
Capabilities
What Gemini 3.5 Flash supports
Structured Outputs
Structured output settings are exposed through OpenRouter for schema-driven or format-controlled responses.
Tool Calling
Tool invocation and tool selection are supported in the routed OpenRouter interface for this model.
Multimodal I/O
This model accepts text input, image input, file input, audio input, video input and returns text output.
Large Context Window
OpenRouter currently lists a context window of $9.00 /MTok with up to 65,536 tokens maximum output tokens.
Pricing for Gemini 3.5 Flash
Primary API pricing shown in the same “quick compare” spirit as the reference page.
Input tokens
$1.50
Per million tokens
Output tokens
$9.00
Per million tokens
Price Comparison
Additional usage-cost dimensions synced into the project for this model.
maxTemperature
2
maxResponseSize
65,536 tokens
API Access & Providers
Places where this model is available, based on the synced detail-page metadata.
Google
Google AI Studio
Provider Endpoints
Endpoint-level provider data currently available for this model.
Google AI Studio
Resources & Documentation
Official model cards, release notes, docs, and other references synced from the source page.
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