How fast is GPT-5.6 Sol compared to previous models?

GPT-5.6 Sol operates up to 11 times faster than Fable 5, offering speeds of up to 750 tokens per second.

Experience GPT-5.6 Sol Ultrafast: Redefining AI Speed

What if you could accelerate AI without compromising quality? Meet GPT-5.6 Sol Ultrafast, a game-changer in speed.

SLWritten bySofia LindqvistAI Research Lead

August 14, 2026 2 min read 1 views

Gamer typing on a futuristic keyboard with multiple screens. — Photo by ANOOF C on Unsplash

Experience GPT-5.6 Sol Ultrafast: Redefining AI Speed

Picture your AI models moving at lightning speed without losing quality. That's GPT-5.6 Sol Ultrafast for you. This new service tier from Cerebras and OpenAI promises up to 750 output tokens per second—outpacing others in AI processing.

Key Takeaways

GPT-5.6 Sol offers up to 750 tokens per second.
It's 11x faster than Fable 5, with no loss in accuracy.
It finishes Humanity's Last Exam in just over 11 hours.
Perfect for legal, financial, and engineering tasks.

Technological Advancements Behind GPT-5.6 Sol

Unmatched Processing Speed

GPT-5.6 Sol hits an incredible pace, delivering up to 750 tokens per second Cerebras. This happens thanks to optimized hardware teamed with smart software integrations by Cerebras.