Codex adds GPT-6.1 Sol Ultrafast for Pro 500 and eligible Enterprise and Edu plans
OpenAI's October 8 announcement brings GPT-6.1 Sol Ultrafast to Codex and ChatGPT Work on Pro 500, eligible usage-based Enterprise and credit-based Edu plans. API pricing is $12 per million input tokens and $60 per million output tokens.
SessionWatcher editorial · Published · Updated · Source announcement: 2026-10-08
Related guide: How to check your Codex usage
Which Codex plans get Sol Ultrafast?
OpenAI announces GPT-6.1 Sol Ultrafast access in Codex and ChatGPT Work for Pro 500, eligible usage-based Enterprise and credit-based Edu plans. Enterprise admins must enable access.
The announcement says Ultrafast for GPT-6.1 Sol is available in all supported regions, including support for US and EU data residency.
Sources: Ultrafast is rolling out today for GPT-6.1 Sol in the API, Codex, and ChatGPT Work
API pricing is separate from plan access
For API use, GPT-6.1 Sol in Ultrafast mode costs $12 per million input tokens and $60 per million output tokens. These are explicitly API prices; the announcement does not specify how Ultrafast consumes Codex or ChatGPT Work plan allowances.
Sources: Ultrafast is rolling out today for GPT-6.1 Sol in the API, Codex, and ChatGPT Work
AI assisted reporting, checked against the linked official sources. Source pages checked 2026-10-08. Editorial process and corrections.