Qwen: Qwen3.5-Flash
Model Type
Proprietary Model
API access only
Recommended Use Cases
Text Generation
Try Qwen3.5-Flash
Qwen3.5-Flash is Alibaba's hosted production API optimized for low-latency agentic workflows, aligned with Qwen3.5-35B-A3B capabilities and featuring 1M context by default.
Overview
Released February 24, 2026, Qwen3.5-Flash is the production API version of the Qwen3.5 medium model series. It provides the capabilities of Qwen3.5-35B-A3B through a managed service with built-in tools and million-token context, making it one of the most cost-effective frontier APIs available.
Key Features
- 1M context window by default (no configuration needed)
- Built-in official tools: Native support for tool use and function calling
- Aligned with 35B-A3B: Same intelligence, production-optimized
- Low latency: Optimized for high-throughput agentic workflows
- Native multimodal: Text, image, and video understanding
- 201 languages supported
When to Use Qwen3.5-Flash
Choose Qwen3.5-Flash when you need:
- Production deployment without infrastructure management
- 1M context for large documents or codebases
- Built-in tool calling and function support
- Cost-effective frontier-level API
- Low-latency agentic workflows
- Multimodal understanding (text, image, video)
Choose Qwen3.5-35B-A3B (open weights) when you need:
- Self-hosted deployment
- Custom fine-tuning
- Data privacy with on-premise hosting
- Local inference on consumer hardware
Choose Qwen3.5-Plus when you need:
- Maximum capability from the 397B flagship
- Adaptive tool use
Role in Series
Qwen3.5 model hierarchy:
- Qwen3.5-Plus (397B/17B): Flagship API with adaptive tools
- Qwen3.5-Flash (aligned with 35B/3B): Production workhorse (this model)
- Qwen3.5-122B-A10B: Long-horizon agentic tasks
- Qwen3.5-35B-A3B: Open-weight version of Flash
- Qwen3.5-27B: Dense model for stable deployment