OpenAI Previews Ultrafast GPT-5.6 Sol, 14X Faster.

OpenAI News· August 13, 2026 View original

Key takeaways

  • OpenAI's Ultrafast mode offers a 14x speed increase for GPT-5.6 Sol.
  • This enhancement enables up to 750 output tokens per second.
  • The technology is powered by Cerebras.
  • It opens doors for new real-time AI applications.

Who benefits

Customer ServiceGamingFinancial ServicesContent CreationHealthcare

Summary

OpenAI is introducing "Ultrafast" mode, a new API service tier for GPT-5.6 Sol, which promises up to 14 times faster performance, delivering 750 output tokens per second, powered by Cerebras technology.

OpenAI has announced a preview of its new "Ultrafast" mode, a significant enhancement to its API services. This new tier is specifically designed for GPT-5.6 Sol, offering a dramatic speed increase of up to 14 times compared to standard operations. The underlying technology enabling this rapid processing is provided by Cerebras, allowing the model to generate up to 750 output tokens per second. This development aims to address the growing demand for high-speed AI inference in various applications.

Why it matters

This speed improvement can unlock new real-time AI applications and significantly reduce latency for existing ones, impacting user experience and operational efficiency.

How to implement this in your domain

  1. 1Investigate the Ultrafast mode's availability and pricing for your specific use cases.
  2. 2Test the new speed tier with latency-sensitive applications like chatbots or real-time content generation.
  3. 3Evaluate potential cost savings or performance gains compared to current API usage.
  4. 4Redesign workflows that were previously constrained by AI model inference speed.
  5. 5Provide feedback to OpenAI on performance and utility during the preview phase.

Original post by OpenAI News

"Preview Ultrafast, a new OpenAI API service tier that runs GPT-5.6 Sol up to 14× faster. Powered by Cerebras, it delivers up to 750 output tokens per second."

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