AI conversational assistants and chatbots for research, writing, coding, brainstorming, and general productivity — from general-purpose models to specialized assistants.
| Tool | Rating | Starting Price | Free Tier | Best For | Key Features |
|---|---|---|---|---|---|
| C ChatGPT | ★★★★★ | Free | Free | Everyone — from students and professionals to developers building on the OpenAI platform | API, Teams, Mobile |
| C Claude | ★★★★★ | Free | Free | Researchers, writers, and analysts working with long documents needing nuanced, thoughtful responses | API, Teams, Mobile |
| G Gemini | ★★★★★ | Free | Free | Google Workspace users wanting AI deeply embedded in their existing workflow | API, Teams, Mobile |
| P Perplexity | ★★★★★ | Free | Free | Researchers, journalists, and knowledge workers needing accurate, cited, real-time information | API, Extension, Mobile |
| M Microsoft Copilot | ★★★★★ | Free | Free | Microsoft 365 users wanting AI assistance directly inside Word, Excel, PowerPoint, and Teams | API, Teams, Extension, Mobile |
| P Poe | ★★★★★ | Free | Free | Users wanting access to multiple AI models in one subscription for comparison and exploration | API, Mobile |
| C Character.ai | ★★★★★ | Free | Free | Users seeking entertainment, creative roleplay, language practice, or AI companionship | Mobile |
| P Pi | ★★★★★ | Free | Free | Users wanting a supportive, emotionally intelligent AI companion for personal conversations | Mobile |
ChatGPT is OpenAI's flagship AI assistant, the most widely used AI tool in the world. It powers conversations, coding, writing, analysis, image generation (DALL-E 3), and web br...
Claude by Anthropic is known for its exceptional long-context understanding (200K token window), honest, nuanced responses, and strong creative writing capabilities. It's a pref...
Gemini is Google's AI assistant, deeply integrated into Google Workspace (Docs, Gmail, Drive, Sheets). It offers multimodal capabilities including image understanding, YouTube s...
Perplexity is an AI search engine and research assistant that provides sourced, up-to-date answers to complex questions. Every response includes citations to original sources, m...
Microsoft Copilot is deeply integrated into the Microsoft 365 suite (Word, Excel, PowerPoint, Teams, Outlook), providing AI assistance directly within the apps millions of profe...
Poe, built by Quora, is a platform that aggregates multiple AI models in one place — GPT-4, Claude, Gemini, and community-built custom bots. It's ideal for users who want to com...
Character.ai allows users to chat with AI personas — fictional characters, celebrities, historical figures, or custom-built characters. It has a massive user base particularly a...
Pi (Personal Intelligence) by Inflection AI is designed as a supportive, empathetic AI companion that prioritizes emotional intelligence and conversational depth over raw capabi...