An ongoing record of Alibaba Cloud Model Studio API compatibility upgrades to request parameters, response structures, and API behavior.
Alibaba Cloud Model Studio continuously upgrades API request parameters, response structures, and behavior to improve protocol compatibility. Updates are listed below by notice update date.
November 2, 2026
| Upgrade | APIs | Description |
|---|
Align max_tokens behavior with the latest OpenAI protocol | OpenAI Chat Completions API / DashScope API |
- Before: the limit varies by model and
thinking_budget, covering either the final answer alone or reasoning and the answer combined.
- After: starting with
qwen4-max-preview, max_tokens for new Qwen models is equivalent to max_completion_tokens and limits the combined tokens for reasoning and the final answer. The meaning of max_completion_tokens is unchanged. With thinking enabled, reasoning shares the output budget. The behavior of existing models before qwen4-max-preview remains unchanged.
|