AI Chat Apps — Overview
AI Chat Apps
Section titled “AI Chat Apps”AI chat assistants let you have natural conversations with powerful language models — for writing, research, coding help, brainstorming, summarising documents, and much more. This section covers the major platforms.
The Leading AI Chat Platforms (2026)
Section titled “The Leading AI Chat Platforms (2026)”| Platform | Made By | Best For |
|---|---|---|
| ChatGPT | OpenAI | General purpose, plugins, GPT-4o |
| Claude | Anthropic | Long documents, coding, safety |
| Gemini | Google DeepMind | Google Workspace integration, multimodal |
| Microsoft Copilot | Microsoft | Office 365, enterprise, Windows integration |
| DeepSeek | DeepSeek AI | Open-source alternative, cost-efficient |
| Grok | xAI (Elon Musk) | Real-time X/Twitter data, unfiltered |
| Perplexity | Perplexity AI | Search-first answers with citations |
How to Choose
Section titled “How to Choose”- For coding help: Claude or ChatGPT (GPT-4o)
- For research with citations: Perplexity AI
- For Office 365 users: Microsoft Copilot
- For Google Workspace users: Gemini
- For long documents (100k+ tokens): Claude
- For real-time web data: Perplexity or Grok
- For open-source / self-hosted: DeepSeek
What These Apps Share
Section titled “What These Apps Share”All major AI chat platforms:
- Accept text, images, and often files as input
- Generate human-quality text responses
- Support multi-turn conversations with memory within a session
- Offer free tiers and premium paid plans
- Provide APIs for developers to build on top of
Comparing Context Windows
Section titled “Comparing Context Windows”| Platform | Context Window (approx.) |
|---|---|
| Claude 3.5 / 3.7 | 200,000 tokens |
| GPT-4o | 128,000 tokens |
| Gemini 2.0 Flash | 1,000,000 tokens |
| Gemini 2.5 Pro | 2,000,000 tokens |
| DeepSeek R1 | 128,000 tokens |
A larger context window means you can paste more text — entire codebases, long PDFs, transcripts — into a single conversation.
Explore Each Platform
Section titled “Explore Each Platform”Use the left sidebar to navigate to individual platform guides, or use the links above.