Overview
Claude is Anthropic's assistant family (currently Sonnet 4.x and Haiku 4.x). It leads on long-context retrieval, on-tool reliability, and on writing quality — the reason it's become the default for developers building coding agents, research assistants, and long-document workflows.
Capabilities
- 200K token context window with strong long-document recall.
- Artifacts — a live workspace for code, docs, and diagrams that Claude edits in place.
- First-class computer-use (screen + keyboard + mouse) for browser-driven automation.
- Tool use with parallel calls and streaming.
- MCP client support in Claude Desktop — connect any Model Context Protocol server.
Where it shines
- Long-context accuracy that meaningfully beats peers past ~50K tokens.
- Prose quality is a step above; the model that most professional writers pick.
- Refuses less noisily on legitimate security, medical, and legal edge cases.
- Anthropic's system prompt discipline (the 'constitution') translates into more predictable behavior.
Where it struggles
- Smaller partner ecosystem than OpenAI — fewer plug-and-play integrations.
- Image generation is not native; you'll pair with another model for that.
- Pricing per output token is higher than GPT-4o-mini at the low end.
Best for
- Long-document Q&A, contract review, and codebase analysis.
- Coding agents that need to read a whole repository at once.
- MCP-driven workflows on the desktop.
- Any workflow where writing quality is a first-class metric.
Pricing notes
Claude Haiku is the cheap/fast tier; Claude Sonnet is the workhorse for coding and long context; Claude Opus is reserved for reasoning-heavy tasks where you're willing to pay 5x for a quality lift.
Tutorials & patterns that work
Get MCP working in Claude Desktop
Install Claude Desktop, open Settings → Developer, and edit claude_desktop_config.json to register your MCP servers. Start with an official server (Filesystem or GitHub) to confirm the plumbing works, then add custom ones. Restart Claude after every config change — that's the top footgun.
Long-context retrieval that actually works
Don't dump 200K tokens raw. Structure the input with clear XML-style tags (<document>, <question>, <instructions>) and put the question both before and after the corpus. This 'sandwich' pattern gives Claude the recall advantage the benchmarks promise.
Coding agents with Claude
Give Claude read/write access to a project via MCP filesystem or the Anthropic Computer Use API. Provide a scratchpad file for plans; enforce that plans are written before edits. This one rule stops most runaway edits.
Artifacts for interactive drafts
When drafting anything longer than a paragraph, ask Claude to put it in an artifact. Artifacts are diff-editable, so revisions replace only the changed part — much cheaper than regenerating from scratch.