Summary & Key Takeaways ​

• OpenAI is previewing "Ultrafast," a new API service tier.
• This mode boosts GPT-5.6 Sol's speed by up to 14 times.
• It achieves an output rate of up to 750 tokens per second.
• The performance gains are powered by Cerebras hardware.
• This significantly enhances the real-time capabilities of GPT-5.6 Sol.

Our Commentary ​

14x faster? That's not just an improvement; that's a game-changer for real-time AI applications. The speed of inference has been a bottleneck for so many use cases. This could unlock entirely new categories of AI products. I'm genuinely excited to see what developers build with this kind of throughput.