# OpenAI previews faster GPT-5.6 Sol API processing mode

_Thursday, August 13, 2026 at 4:14 PM EDT · AI, Infrastructure · Latest · Tier 2 — Notable_

![OpenAI previews faster GPT-5.6 Sol API processing mode — Primary](https://cdn.ithinkdiff.com/wp-content/uploads/2026/08/ChatGPT-Ultrafast-Mode.jpeg)

OpenAI is previewing an Ultrafast mode for GPT-5.6 Sol through its API that can generate up to 750 output tokens per second, according to ithinkdiff.com.

The report says the mode is powered by Cerebras hardware and is intended for latency-sensitive production uses including voice interfaces, customer support, commerce, developer agents, financial research and security response. It says OpenAI describes the mode as running Sol up to 14 times faster than standard processing.

At the stated rate, a 1,000-token response would complete in under two seconds.

## Sources

- [ithinkdiff.com](https://www.ithinkdiff.com/openai-ultrafast-api-tier-gpt-5-6-sol-750-tokens-per-second/)

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Retrieved: 2026-08-16T07:18:28.297Z
Publisher: Tech & Business (techandbusiness.org)