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October 5–9, 2026

Use GPT-6.1 Sol with Ultrafast mode

Ultrafast mode speeds up token generation with GPT-6.1 Sol in Codex and ChatGPT Work. Ultrafast is available on Pro $500 and eligible Enterprise and Edu plans.

Enterprise access is off by default; workspace owners must enable it. GPT-6.1 Sol Ultrafast supports inference residency in the United States and Europe (EEA + Switzerland).

See Ultrafast mode for plan and workspace requirements and Pricing for usage and credit rates. Read the launch announcement.