In Section 5 of their [technical report](https://arxiv.org/pdf/2509.17765v1) they mention them

"... A comprehensive evaluation was performed on a suite of models, including Qwen3-Omni-30B-A3B- Instruct, Qwen3-Omni-30B-A3B-Thinking, and two in-house developed variants, designated Qwen3- Omni-Flash-Instruct and Qwen3-Omni-Flash-Thinking. These “Flash” models were designed to improve both computational efficiency and performance efficacy, integrating new functionalities, notably the support for various dialects. ..."