OpenAI introduced several ChatGPT updates during the final week of October 2026, ranging from Apple integrations and easier account switching to a new AI model and expanded agent capabilities. Here is what changed and what it means for users.

iCloud Mail and Calendar Come to ChatGPT

On October 27, OpenAI introduced iCloud Mail and Calendar plugins. Users can connect their Apple services to find messages, catch up on email, review their schedules, and update calendar events through ChatGPT.

The integrations are available across ChatGPT plans on the web, desktop, and iOS, although users must connect the relevant accounts before ChatGPT can access them.

Switch Between Two ChatGPT Accounts on Mobile

An October 30 update began rolling out account switching in the ChatGPT iOS and Android apps. Users can remain signed in to two accounts and move between them without repeatedly logging out.

Each account keeps its own conversations, memory, files, settings, and subscription. That separation may appeal to people who maintain distinct personal and professional accounts. On mobile, the feature appears under Settings → Switch account as the rollout reaches each user.

GPT-6.1 Terra Arrives in Work and Codex

OpenAI announced GPT-6.1 Terra on October 26. The model focuses on visual reasoning, computer use, and writing, making it suited to tasks that involve understanding information and acting within software.

Terra is rolling out to eligible Plus, Pro, Business, Enterprise, and Edu users in ChatGPT Work and Codex. It is not a model option in ordinary Chat conversations. Access depends on plan, region, and workspace settings.

More Work and Codex Usage for Certain Pro Plans

On October 29, OpenAI increased included Work and Codex allowances for several higher-tier subscriptions. Pro 100 and Pro 500 plans received twice their previous allowances, while changes to Pro 200 restored or increased usage for affected subscribers.

These changes concern Work and Codex allowances rather than a blanket increase in regular ChatGPT conversation limits.

Dots Can Now Send and Receive Text Messages

OpenAI’s always-on agents, called dots, gained a new communication option on October 28. A beta rollout allows eligible U.S. Pro users to contact their dot through iMessage or RCS and receive proactive text updates.

The feature is designed to make ongoing AI assistance available outside the ChatGPT interface. OpenAI says this connection does not give a dot access to the user’s other text conversations. Dots and texting access remain limited by plan and rollout eligibility.

ChatGPT Sites Removes Its Fixed Site Count

Another recent change, announced October 15, removes the fixed limit on the number of ChatGPT Sites that eligible Plus and Pro users can create. Usage and storage limits still apply.

Sites allows users to create lightweight websites and interactive tools inside ChatGPT, including dashboards, trackers, and prototypes. Removing the fixed count makes it easier to experiment with multiple projects, though it does not mean unlimited usage.

What These Updates Suggest

Together, the announcements show ChatGPT moving beyond a standalone chatbot. Email and calendar connections bring personal information into the conversation with permission. Account switching helps keep different uses separate. Work, Codex, and Terra focus on carrying out more involved tasks, while dots introduce a way for AI assistance to continue between conversations.

Not every feature is available to every user immediately. Rollouts, subscriptions, regions, and workspace permissions still determine access.

Source: OpenAI’s official ChatGPT release notes and model release notes.