Claude
Anthropic · Claude Sonnet 5
Anthropic's AI assistant for writing, research, and analysis — free to start at claude.ai, with paid Pro and Max plans for heavier use.
Head to head
The two best-known general assistants, both with free tiers. They overlap heavily; the differences are in tone, long-document handling, and where each free tier draws the line.
Anthropic · Claude Sonnet 5
Anthropic's AI assistant for writing, research, and analysis — free to start at claude.ai, with paid Pro and Max plans for heavier use.
OpenAI
OpenAI's widely used AI assistant for writing, coding, and everyday questions — free to use at chatgpt.com with an account, with paid Go, Plus, and Pro plans for higher limits and stronger models.
| Fact | Claude | ChatGPT |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Category | AI Assistant | AI Assistant |
| Pricing | Freemium | Freemium |
| Verification | Verified | Listed |
| Model | Claude Sonnet 5 | — |
| Listed | Aug 2026 | Sep 2026 |
Try both — they are free to start. Reach for Claude when you are working through long documents or want closely-followed instructions; reach for ChatGPT for its broad tool ecosystem and image features.
Nothing here is ranked or chosen for money — see editorial independence. Read the full listings for Claude and ChatGPT, or browse the whole directory.