Fingerprint analysis suggests Union Alpha is an OpenAI model

Jaysen♨️ @_ak_111Originally posted 2026.09.17

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According to @blueemi99, Union Alpha might be an OpenAI model 👀 It appears to use OpenAI’s tokenizer, while a live GPT model matched Union’s cutoff behavior on 3/3 prompts GPT-6 Luna? GPT-OSS 2? What do you think Union Alpha actually is?

This post quotes another post: “Astra analysis suggests Union Alpha may be an OpenAI model”