| ChatGPT (GPT-4/5) | OpenAI | Generative AI (NLP, multimodal) | Generates text, answers questions, coding, tutoring | Free + paid versions |
| Google Gemini | Google DeepMind | Multimodal AI | Text, images, coding, reasoning | Free + paid (Gemini Advanced) |
| Claude (Claude 3/4) | Anthropic | Generative AI (NLP) | Writing, analysis, long-document reasoning | Free + paid |
| Microsoft Copilot | Microsoft (OpenAI-powered) | Generative AI | Integrated AI in Word, Excel, web search | Free + paid |
| Meta AI (LLaMA-based) | Meta | Large Language Model | Chat, reasoning, open-source AI models | Free (some open-source) |
| Perplexity AI | Perplexity | AI search + NLP | AI-powered search with citations | Free + paid |
| DALL·E | OpenAI | Generative AI (image) | Creates images from text prompts | Integrated in ChatGPT |
| Midjourney | Midjourney Inc. | Generative AI (image) | High-quality artistic image generation | Paid (Discord-based) |
| Stable Diffusion | Stability AI | Generative AI (image) | Open-source image generation | Free + open-source |
| Runway ML | Runway | Generative AI (video) | AI video creation and editing | Free + paid |
| Synthesia | Synthesia | Generative AI (video/avatar) | AI avatars for presentations | Paid |
| GrammarlyGO | Grammarly | NLP + Generative AI | Writing assistance, rewriting, tone adjustment | Free + paid |
| Notion AI | Notion | Generative AI | Writing, summarizing, note-taking | Paid add-on |
| Otter.ai | Otter | Speech AI | Transcription and meeting notes | Free + paid |
| GitHub Copilot | Microsoft/GitHub | Code AI (LLM-based) | Code generation and suggestions | Paid (student free plans) |