OpenAI's Atlas browser stopped working on August 9, 2026; browser-based agentic features moved into the ChatGPT desktop app and a new Chrome extension.

ChatGPT's text-to-video feature, including the Sora web app and mobile app, was discontinued April 26, 2026; ChatGPT no longer generates video.

ChatGPT's free tier began showing ads in the US in February 2026.

Effective August 18, 2026

The August 2026 Copilot app merger removed Deep Research for consumers; a replacement called Researcher is available only to paid Microsoft 365 Premium subscribers.

Microsoft combined the consumer Copilot and Microsoft 365 Copilot apps into a single unified app (web and mobile from mid-August 2026, desktop in September), retiring several consumer features including Group Chats, AI podcasts, Copilot Labs, and the Mico character.

DeepSeek now appears across the thesaurus: a free, text-and-code assistant with a DeepThink reasoning mode and open-weight models, but no image or video generation, memory, voice, connectors, or enterprise admin controls.

Model weights are published under an open licence, so organizations can self-host the same model instead of calling a vendor API.

The reasoning mode carries no separate plan or message quota in the consumer app; paid pricing applies only to the developer API.

DeepSeek's free app refreshed to its 2026 models, bringing a 1-million-token context window and stronger coding and reasoning at no cost.

Kimi (Moonshot AI) now appears across the thesaurus: a free assistant with open-weight models, a cited research agent, and an agent mode that builds small apps and decks — but no image or video generation, memory, voice, connectors, or enterprise admin controls.

Moonshot publishes Kimi's model weights under an open licence, so organizations can self-host the same model rather than calling a vendor API.

A desktop app (Mac and Windows) that runs multi-step tasks on your computer — researching, building slides, and operating your browser to extract data and fill forms.

Kimi's 2026 flagship model brought a 1-million-token context window, extending its long-document strength.

Perplexity's AI-native browser dropped its $200/month paywall and became free worldwide in October 2025.

Creating Excel, PowerPoint, Word, and PDF files opened to all users including the free tier in February 2026.

Generating Docs, Sheets, Slides, and PDFs directly in chat became available to all users globally in late April 2026.

Creating custom Gems became free rather than a paid-tier feature.

Copilot gained generally-available agentic mode inside Word, Excel, and PowerPoint in April 2026.

Claude doubled its five-hour session limits on Pro, Max, Team, and Enterprise plans and removed the earlier peak-hours reduction for Pro and Max, effective May 2026.

Gemini replaced flat daily prompt caps with compute-based limits that refresh every five hours under a weekly ceiling, effective May 2026. Some users reported lower effective usage on certain tiers after the change.

OpenAI added ChatGPT Go, a budget plan priced around $5–8/month depending on region — the first sub-$20 tier from a major provider.

Claude added the ability to orchestrate multiple agents working together on one task, introduced around the Opus 4.6 update in early 2026.

Microsoft 365 Copilot's $18/user/month promotional price ended in June 2026; enterprise pricing is now $30/user/month. (Business pricing, not a consumer plan.)