No endless tables — just the differences that matter, and a clear call. Pick two tools and see who takes it.
| Tool | ||
|---|---|---|
| Pricing | Freemium | Paid |
| Rating | ||
| Category | AI Assistants | Productivity |
| Description | OpenAI's general-purpose AI assistant now powered by GPT-5.4 with 1M token context and computer-use capability for desktop automation. Supports text, voice, image, file, and code workflows in one interface. Used by 400M+ weekly active users across professional and consumer contexts. | Microsoft Copilot 365 brings GPT-4 powered AI assistance to Word, Excel, PowerPoint, Outlook, and Teams. Draft documents, analyze data, create presentations, and manage emails with AI that understands your organizational context and Microsoft Graph data. |
| GPT-5.4 model with 1M token context window | Supported | Not supported |
| Computer-use feature for desktop task automation | Supported | Not supported |
| Codex App integration for autonomous coding agents | Supported | Not supported |
| Voice mode with real-time conversation | Supported | Not supported |
| DALL-E image generation built in as GPT Image | Supported | Not supported |
| File upload and analysis (PDF, CSV, images, code) | Supported | Not supported |
| Custom GPTs marketplace with 3M+ published agents | Supported | Not supported |
| Projects feature for persistent context across sessions | Supported | Not supported |
| Word document drafting | Not supported | Supported |
| Excel data analysis | Not supported | Supported |
| PowerPoint generation | Not supported | Supported |
| Outlook email assistance | Not supported | Supported |
| Teams meeting summaries | Not supported | Supported |
| Microsoft Graph integration | Not supported | Supported |
| Enterprise data grounding | Not supported | Supported |
| Cross-app intelligence | Not supported | Supported |
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| Website | Visit | Visit |
