Qwen3.5 Plus API
About
Build advanced reasoning agents with Qwen3.5 Plus, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.12/1M input and $0.69/1M output tokens, native tool calling support. Access Qwen3.5 Plus via the Merge Gateway API with up to 250K output tokens.
Capabilities
Input Modalities
text
Output Modalities
text
Reasoning
Yes
Structured Output
No
Tool Use
Yes
WeightsClosed
Limits
Context Window
1.0M
Tokens
Input Limit
1.0M
Tokens
Max Output
250K
Tokens
Pricing
Standard (per 1M tokens)
Input
$0.12
Output
$0.69
Caching (per 1M tokens)
Read
$0.02
Frequently Asked Questions
Qwen3.5 Plus by Merge Gateway costs $0.12 per 1M input tokens and $0.69 per 1M output tokens. Cached reads cost $0.02 per 1M tokens.
Model Details
ID
qwen/qwen3.5-plus
Provider
Merge GatewayFamily
qwen
Release Date
Feb 16, 2026
Knowledge Cutoff
Apr 1, 2025
API Integration
NPM Package
merge-gateway-ai-sdk-provider
Environment Variables
MERGE_GATEWAY_API_KEY
API Base URL
https://api-gateway.merge.dev/v1/ai-sdk