2025-07-21
To the best of my abilities, I have extracted the system prompts used by Riffusion. LLMs can be seen used in the two main modes: "Prompt mode" and "Compose mode". The LLM they use is unknown. This kind of functionality has existed on Riffusion since their launch (2025-01-30). Their prompts mention reasoning, so it might be a chain of thought model, given the timeline -- something like o1-mini, but I have not been able to confirm this. For all I know, Riffusion being hosted on Google, it might be one of the Gemini models.
Failure on title generation (occurs normally, sometimes) might help realize what model or framework is being used:
}}]}]}]}}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]}]} to=functions.final_result payload={title:
Definitely seems to be using function calling-capable models. Maybe PydanticAI on the backend?