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Vercel AI Gateway

Qwen 3.5 Flash API

Vercel AI Gateway
About

Build advanced reasoning agents with Qwen 3.5 Flash, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.10/1M input and $0.40/1M output tokens, native tool calling support. Access Qwen 3.5 Flash via the Vercel AI Gateway API with up to 64K output tokens.

Capabilities

Input Modalities

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Output Modalities

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Reasoning
Yes
Structured Output
No
Tool Use
Yes
WeightsClosed
Temperature
Adjustable
Attachment
Supported
Limits
Context Window
1.0M

Tokens

Input Limit
1.0M

Tokens

Max Output
64K

Tokens

Pricing

Standard (per 1M tokens)

Input
$0.10
Output
$0.40

Caching (per 1M tokens)

Read
$0.0010
Write
$0.13
Frequently Asked Questions

Qwen 3.5 Flash by Vercel AI Gateway costs $0.10 per 1M input tokens and $0.40 per 1M output tokens. Cached reads cost $0.0010 per 1M tokens. Cache writes cost $0.13 per 1M tokens.

Model Details
ID
alibaba/qwen3.5-flash
Provider
Vercel AI Gateway
Family
qwen
Release Date
Feb 24, 2026
Knowledge Cutoff
N/A
API Integration
NPM Package
@ai-sdk/gateway
Environment Variables
AI_GATEWAY_API_KEY
Documentation