OpenAI: Codex/ChatGPT Work rolls out three updates, GPT-5.6 Sol to remain in current subscriptions OpenAI team member Tibo shared a post stating that in the past 48 hours, significant updates have been made to Codex and ChatGPT Work: The 5-hour usage limit for Plus, Business, and Pro plans has been temporarily removed; efficiency optimizations have been applied to GPT-5.6 Sol, which will reduce usage consumption (specific impact to be quantified and announced later). He later added that GPT-5.6 Sol will continue to be included in current ChatGPT subscriptions (including Go, Plus, and Pro) at least until a more advanced model is released.