OpenAIOfficial ReleaseOfficial Source

Previewing Ultrafast mode: GPT-5.6 Sol at up to 14X the speed

OpenAI’s preview tier runs GPT-5.6 Sol at up to 750 output tokens per second, targeting agent workloads where generation latency is the bottleneck.

OpenAI

Open Source Open Markdown Open JSON

Source Summary

OpenAI is previewing **Ultrafast**, an API service tier for **GPT-5.6 Sol** powered by Cerebras. It claims up to **14× faster** operation and up to **750 output tokens per second**.

Practical Implication

Builders with latency-bound coding agents should test whether faster generation materially shortens end-to-end runs, especially when tool execution is already quick.

Agent-Ready Context

OpenAI is previewing **Ultrafast**, an API service tier for **GPT-5.6 Sol** powered by Cerebras. It claims up to **14× faster** operation and up to **750 output tokens per second**.

Builders with latency-bound coding agents should test whether faster generation materially shortens end-to-end runs, especially when tool execution is already quick.

Both figures are qualified maxima. The material gives no pricing, availability, workload methodology, or comparison baseline, and tool latency may still dominate many runs.

Context Map

infracoding#coding-agents

Uncertainty

Both figures are qualified maxima. The material gives no pricing, availability, workload methodology, or comparison baseline, and tool latency may still dominate many runs.