Eight AI stories from the last week of October 2026, with official sources and the conditions for using each.
Anthropic announced the end of Opus 4.8 fast mode in the Claude Code 2.1.316 changelog. It has been deprecated since October 30, 2026, and will be removed on November 30. After that, requests will return an error instead of falling back to the standard mode.
On October 29, 2026, Google opened a feature for creating, previewing and editing files inside the Gemini app. PDFs work on web and mobile; documents, sheets, presentations, Markdown, TXT and code work on the web. Both personal accounts and Workspace can use it.
In the October 29, 2026 edition of its Model Spec, OpenAI reorganized the content around five values: fidelity to human intent, minimizing harm, honesty and transparency, human agency, and care. Most detailed style guidance was removed.
On October 28, 2026, Google released Gemini 4 Carbon. The launch price is $2 input and $10 output per 1M tokens, the same as Argon; after the launch period it becomes $4 input and $20 output. For now it is open first to a limited group of cyber defenders.
With its October 26–30, 2026 updates, OpenAI is rolling out dot texting in beta. ChatGPT Pro users in the US can exchange text, photos and voice with dot over iMessage or Android RCS. Setting it up does not give access to your other text conversations.
On October 28, 2026, Google expanded AI Mode ads to 10 countries: Australia, Canada, India, Kenya, Malaysia, New Zealand, Nigeria, Pakistan, the Philippines and Singapore. Korea is not included, and Brazil, Mexico, the UK and others are planned for Q4.
Anthropic's IPO filing (S-1) lists advertising expenses of $33 million in 2024 and $147 million in 2025. Digiday reported this on October 27, 2026, and we checked it against the original filing. Marketing and advertising expenses in the first half of this year rose $273 million from the same period last year.
OpenAI released GPT-6.1 Terra, a fast model that is strong at understanding images and screens and operating computers. It is available in ChatGPT Work and Codex on Plus and higher plans, and in the API (gpt-6.1-terra) at $1 input and $5 output per 1M tokens.