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OpenRouter

Qwen: Qwen3.5-Flash API

OpenRouter
About

Build advanced reasoning agents with Qwen: Qwen3.5-Flash, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.07/1M input and $0.26/1M output tokens, native tool calling support. Access Qwen: Qwen3.5-Flash via the OpenRouter API with up to 66K output tokens.

Capabilities

Input Modalities

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Output Modalities

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Reasoning
Yes
Structured Output
Yes
Tool Use
Yes
WeightsClosed
Temperature
Adjustable
Attachment
Supported
Limits
Context Window
1.0M

Tokens

Input Limit
1.0M

Tokens

Max Output
66K

Tokens

Pricing

Standard (per 1M tokens)

Input
$0.07
Output
$0.26
Frequently Asked Questions

Qwen: Qwen3.5-Flash by OpenRouter costs $0.07 per 1M input tokens and $0.26 per 1M output tokens.

Model Details
ID
qwen/qwen3.5-flash-02-23
Provider
OpenRouter
Family
qwen
Release Date
Feb 25, 2026
Knowledge Cutoff
N/A
API Integration
NPM Package
@openrouter/ai-sdk-provider
Environment Variables
OPENROUTER_API_KEY
API Base URL
https://openrouter.ai/api/v1
Documentation