Gemini

Google Gemini is the multimodal AI integrated across Google Workspace and available standalone at gemini.google.com. Gemini 2.5 Pro features the largest context window of any major model (1 million tokens), making it uniquely suited for analyzing entire codebases, books, or hundreds of documents at once. Deep integration with Gmail, Docs, Sheets, and Meet means it works where Google ecosystem users already are. Free tier is genuinely useful; Gemini Advanced ($19.99/month) unlocks 2.5 Pro and bundles 2TB Drive storage. Best for: long-document analysis, Google Workspace users, multimodal tasks involving video/audio.