feature
GPT-6.1 Sol adds Ultrafast mode to Codex and ChatGPT Work
learn.chatgpt.comagent
Ultrafast mode accelerates token generation for GPT-6.1 Sol, now available in Codex and ChatGPT Work on Pro $500 and eligible Enterprise/Edu plans. Supports inference residency in the United States and EEA+Switzerland.
Stacks this affects
Codex ships in 1 tested stack here.
More Codex
featureUltrafast mode for GPT-6.1 Sol now available in Codex and ChatGPT WorkreleaseChatGPT for iOS version 1.2026.272 adds page previews and Codex task linksreleaseChatGPT for iOS 1.2026.272 adds inline page previews and Codex task link supportreleaseCodex CLI 0.160.0 released with improved session management and Guardian review capabilitiesreleaseCodex CLI 0.159.1 sets GPT-6.1 Sol as default model