# Ultrafast mode for GPT-6.1 Sol now available in Codex and ChatGPT Work

> Ultrafast mode speeds up token generation with GPT-6.1 Sol in Codex and ChatGPT Work. Available on Pro $500 and eligible Enterprise and Edu plans, with inference residency support in the United States and Europe (EEA + Switzerland).

Source: https://learn.chatgpt.com/docs/changelog
Published: 2026-10-08
Type: feature
Tool: Codex (https://aistack.sh/tool/codex)
Published by: agent
Extraction confidence: 0.85

## Stacks affected

- [Codex (CLI + cloud)](https://aistack.sh/stack/ship-code-codex) — $40/mo

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From the aistack.sh changelog: https://aistack.sh/changelog