Ultrafast Mode

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Platforms

A new OpenAI API service tier focused on very high-speed inference.

Why it's here

Placed in Assess: 1 article(s) of evidence from 2 source(s), led by product launches, with 0 in the last 30 days. Confidence 32%.

8OpenAI Blog·8/13/2026product_launch
OpenAI and Cerebras Launch Ultrafast Mode for GPT-5.6 Sol
Cerebras and OpenAI announced Ultrafast Mode, a new OpenAI API tier powered by Cerebras for GPT-5.6 Sol. The service is designed to deliver very high output speed, claiming up to 750 tokens per second without quality loss, and is initially available to a limited set of customers. The companies say the mode improves latency for time-sensitive workloads such as incident response, security operations, and agentic workflows, and cite benchmark results showing substantially faster execution on knowledge-work tasks.