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Claude.ai is the official web interface for interacting with Anthropic's Claude models. In this lesson you'll explore every corner of the interface and understand the differences between plans.
When you open Claude.ai you'll find:
| Element | Function | |---------|---------| | Chat box | Type your prompts here — supports very long text | | Projects | Folders organizing conversations by topic | | Artifacts | Side panel for code/HTML/SVG output | | File upload | PDF, images, Word docs up to 30 MB | | Voice mode | Voice conversation in the mobile app |
Claude Haiku — Fastest and cheapest. Ideal for simple, quick tasks.
Claude Sonnet — The perfect balance of speed and quality. The default model for subscribers.
Claude Opus — Most powerful for complex tasks: deep analysis, advanced code, multi-step reasoning.
You can upload:
When you ask Claude to write code, HTML, or formatted Markdown, it displays it in a separate Artifacts panel that allows:
Projects transform your daily workflow:
| Plan | Models | Context Window | Projects | |------|--------|----------------|---------| | Free | Haiku only | 100K tokens | ❌ | | Pro | Haiku/Sonnet/Opus | 200K tokens | ✅ | | Team | All models | 200K tokens | ✅ Shared | | Enterprise | All + Fine-tuning | 200K+ | ✅ |
The 200K tokens means approximately:
This makes Claude capable of analyzing entire projects at once.