Gemini

Google Gemini is the multimodal AI integrated across Google Workspace and available standalone at gemini.google.com. The paid tier — Gemini Advanced is now sold as Google AI Pro ($19.99/month in the US) — runs Gemini 3.1 Pro with a 1-million-token context window, suited to analysing long documents, codebases and video, plus Gemini inside Gmail, Docs and Vids, Gemini Notebook (formerly NotebookLM) and 5TB of storage. Google AI Plus ($4.99/month) doubles the free limits; Google AI Ultra ($99.99 or $199.99/month) adds Deep Think, Gemini Spark and first access to Gemini 4 Argon, Google's new frontier model, announced on September 30, 2026 with no consumer date yet. The free tier runs Gemini 3.6 Flash. Best for: Google Workspace users, long-document analysis, multimodal tasks involving video and audio. Plans as listed on Google's US plan page on October 2, 2026.