Union Alpha on OpenRouter: Tests and Reviews

Running a standard shooter prompt on Union Alpha, the stealth model on OpenRouter, produced a fully playable FPS whose menu matches GPT-6 Astra's signature title, orange button and dark 3D scene.

A side-by-side test shows Union Alpha completing the same task with less than a third of the tokens used by GPT-6 Astra and in under half the time.

The blogger says they had not been following benchmarks and just noticed Union Alpha, and plans to test whether it can compete with GPT-6 Astra on UE5.

A Chinese user says the new mystery model Union Alpha cannot even pass the candy test and questions whether it can beat GPT 6 Astra High.

According to @blueemi99, Union Alpha appears to use OpenAI's tokenizer, and a live GPT model matched its cutoff behavior on 3/3 prompts, prompting guesses of GPT-6 Luna or GPT-OSS 2.

A user prompted Union Alpha to reveal its real model and says it answered ChatGPT and OpenAI, with tokenizer tests and direct answers to sensitive questions leading them to guess it is OpenAI's GPT-6 Luna.