Qwen3.5

Qwen3.5 is Alibaba Qwen's AI model API family for teams evaluating long-context generation, reasoning, coding, and multimodal workflows, with official model identity anchored at https://qwen.ai/research and commercial API/pricing verification handled through Alibaba Cloud Model Studio documentation at https://www.alibabacloud.com/help/en/model-studio/ before production use and region-specific billing estimates.

Alibaba Cloud Model Studio documentation lists Qwen3.5 API availability, quotas, model IDs, context limits, and per-token billing. Current published examples include qwen3.5-plus with a 1M-token context, 64k max output, 80k thinking budget, function calling support, built-in tools support, structured output support, and Coding Plan support in Global and Chinese Mainland deployment modes. qwen3.5-flash is also listed with a 1M-token context, 64k max output, 80k thinking budget, function calling support, built-in tools support, and structured output support. The official Model Studio pricing table lists qwen3.5-plus in Global mode at $0.115 input and $0.688 output per 1M tokens for 0<Token≤128K, $0.287 input and $1.72 output for 128K<Token≤256K, and $0.573 input and $3.44 output for 256K<Token≤1M. It lists qwen3.5-flash in Global mode at $0.029 input and $0.287 output per 1M tokens for 0<Token≤128K, $0.115 input and $1.147 output for 128K<Token≤256K, and $0.172 input and $1.72 output for 256K<Token≤1M.

The practical differentiation for Qwen3.5 is the combination of Qwen research lineage, published Model Studio access, long-context tiers, and a broad variant set. Teams can choose a flagship long-context Plus route, a cheaper Flash route, or size-specific Qwen3.5 models depending on latency, reasoning depth, budget, and deployment geography. International Model Studio pricing lists qwen3.5-plus at $0.4 input and $2.4 output per 1M tokens for 0<Token≤256K, and $0.5 input and $3 output for 256K<Token≤1M. International qwen3.5-flash is listed at $0.1 input and $0.4 output per 1M tokens for 0<Token≤1M, with a 1 million token free quota for selected International entries valid for 90 days after activating Model Studio. Size-specific International entries include qwen3.5-397b-a17b at $0.6 input and $3.6 output, qwen3.5-122b-a10b at $0.4 input and $3.2 output, qwen3.5-27b at $0.3 input and $2.4 output, and qwen3.5-35b-a3b at $0.25 input and $2 output per 1M tokens for 0<Token≤256K.

The provided Qwen website content also confirms that this listing is tied to the Qwen research site and broader Qwen web ecosystem. The scraped content references Qwen-related domains including qwen.ai, chat.qwen.ai, qwenlm.ai, qwenlm.io, chat.qwenlm.ai, and qwenchat.com, with some internal or infrastructure-related references visible in the page code. It also shows production and pre-production environment detection plus analytics, API monitoring, JavaScript error monitoring, resource error monitoring, performance monitoring, and event timing monitoring. Those website-infrastructure observations are secondary context rather than model capability claims; users should verify model availability, pricing, and quota rules through Qwen research pages and Alibaba Cloud Model Studio documentation.