I don't have reliable information about OpenAI's very latest releases, as models and announcements may have come out after my knowledge cutoff or that I'm simply not certain about.

As of my knowledge, OpenAI's flagship models have included **GPT-4o** ("omni"), released in May 2024, which handles text, audio, and vision natively, and the **o1** reasoning model series released later in 2024. OpenAI also announced **o3** in late 2024.

For the most current information on OpenAI's latest flagship model, I'd recommend checking:
- OpenAI's official website (openai.com)
- Their blog or news announcements
- Their API documentation

Is there something specific about OpenAI's models I can help you with based on what I do know?
