OpenAI Launches Ultrafast Mode for GPT-5.6 Sol with 14X Speed Increase

OpenAI’s new Ultrafast mode for the GPT-5.6 Sol model achieves a speed increase of up to 14 times compared to previous iterations. This mode delivers an impressive output rate of 750 tokens per second, significantly enhancing processing capabilities for applications relying on real-time data generation. The Ultrafast API service tier is powered by technology from Cerebras, optimizing performance for demanding AI tasks. This development follows OpenAI’s ongoing efforts to improve the efficiency of its models, as seen in their recent initiatives to expand agentic AI solutions. Practitioners can leverage this increased speed for applications requiring rapid response times and high throughput. For further details, visit the OpenAI Blog.