In the china AI scene, there seem to be two separate types of companies.

Companies or labs like deepseek that produce less but larger and more innovative models, so seem to be more research oriented.

then there are companies like z.ai (GLM), Minimax, and Qwen which focus more on commercializing the AI and so produce far more versions, but with far less improvements between them (usually fine tunes)

Commercial providers like anthropic probably do the same thing, maybe even without labeling it like a different version if the model is similiar enough.