This is an interesting service. The audio quality seems similar to Suno 4.5, and the "creativity" and "musicality" is pretty good as well. Here are two tracks I was able to generate (download was only possible via network monitor though):

- http://rochus-keller.ch/Diverses/oaimusicgen.com_second_atte...

- http://rochus-keller.ch/Diverses/oaimusicgen.com_first_attem...

There are indications that this is a wrapper service to AIMusicGen.ai, and that it is operated in China. Anyway, I think the results are promising. You can compare the songs with the ones I generated on Suno 5 with similar prompts: https://rochus-keller.ch/?p=1428.