Qwen Made Crystal Clear · chapter 2: The Lineup Decoded
The naming decoder, applied to a real Qwen open-weight checkpoint ID
2026-09-06
Read any name left to right using these five slots.
Below: the paragraph from the book that builds this idea, then the diagram itself (Figure 2.1), and a recap. About a minute of reading.
The second is the hosted API product name, the name you pass as the model parameter when calling Alibaba Cloud Model Studio. It is built from a lowercase family name, a version number, and a tier word, such as qwen3.8-max, qwen3.8-flash, or qwen3.7-plus. These names do not show a parameter count, because they name a product, not a specific set of published weights. Chapter 5's pricing research makes an important caution explicit here: an API product name like qwen3.8-max and an open-weight checkpoint name like Qwen3.8-2.4T-A95B are closely related but not confirmed to be identical artifacts. Treat them as related, not interchangeable, and never silently swap one name for the other.
Recap
- The idea: Read any name left to right using these five slots.
- The picture: Figure 2.1, from chapter 2 ("The Lineup Decoded") of Qwen Made Crystal Clear.
- Go deeper: the chapter builds this step by step, with recipes and sources at the end.
This diagram is one of many in Qwen Made Crystal Clear.
Every chapter opens with the gist, draws the hard ideas, and ends with recipes and sources.
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