Claude is Anthropic's AI assistant — and the AI that built this entire website. Known for nuanced writing, deep reasoning, massive context windows, and a coding agent (Claude Code) that can build full applications from scratch. Here's everything you need to know.
Anthropic offers three model tiers, each optimized for different needs. The Claude 4 family (released 2025) is the current generation.
| Model | Best For | Context | Speed | Cost (API) |
|---|---|---|---|---|
| Opus 4.6 | Complex reasoning, coding, research, long documents | 1M tokens | Moderate | $15 / $75 per M tokens |
| Sonnet 4.6 | Best balance of speed, quality, and cost. Daily workhorse. | 200K tokens | Fast | $3 / $15 per M tokens |
| Haiku 4.5 | Quick tasks, classification, extraction, high volume | 200K tokens | Very fast | $0.80 / $4 per M tokens |
The simplest way. Go to claude.ai, create an account, and start chatting. Free tier gives limited Sonnet access. Pro ($20/mo) gives more usage. Max ($100/mo) gives highest limits and Opus access. Available on web, iOS, Android, and desktop (Mac/Windows).
Anthropic's command-line coding agent. Install with npm install -g @anthropic-ai/claude-code. It reads your entire codebase, writes files, runs commands, and builds full features autonomously. This tool built the entire 108-site WholeTech Network.
For developers building AI into their products. Pay per token. Supports streaming, tool use, vision (image input), and system prompts. SDKs for Python, TypeScript, Java, and more. Sign up at console.anthropic.com.
Enterprise access through AWS or GCP. Same Claude models with your cloud provider's security, billing, and compliance. No data used for training. SOC 2, HIPAA eligible.
| Plan | Price | What You Get |
|---|---|---|
| Free | $0 | Limited Sonnet access. Good for trying it out. Usage limits reset daily. |
| Pro | $20/mo | 5x more usage. Opus access. Claude Code access. Projects, file uploads, web search. |
| Max | $100/mo | 20x more usage. Priority during high demand. Highest Opus limits. For power users. |
| Team | $30/user/mo | Everything in Pro + shared projects, admin controls, higher limits per user. |
| Enterprise | Custom | SSO, SCIM, audit logs, custom retention, dedicated support, SLAs. |
Claude produces the most natural, nuanced writing of any AI. Blog posts, emails, reports, creative fiction, technical docs. It matches your tone and follows complex style guides. Ask it to write "like a senior engineer explaining to a junior" and it nails the register.
Claude Code is arguably the most capable AI coding tool available. It reads entire codebases, understands architecture, writes production-quality code, runs tests, debugs errors, and deploys. Supports every major language. Built this network's 108 sites, build scripts, and deployment pipeline.
Upload a 200-page PDF and ask questions about it. Claude can process up to 1 million tokens of context (Opus) — that's roughly 700,000 words or several books. Summarize, extract, compare, and analyze massive documents.
Multi-step logic, math, planning, and problem-solving. Claude shows its work and explains its reasoning. Opus is particularly strong at tasks that require thinking through multiple steps or holding many constraints in mind simultaneously.
Claude Code is a terminal-based AI coding agent. It's different from chat-based coding help — it actually executes commands, reads files, and makes changes to your codebase.
npm install -g @anthropic-ai/claude-codeclaudeInstead of "write me a website," say "build an Austin restaurant guide with 6 sections: patios, coffee shops, live music, swimming holes, late night, and parks. Use dark theme, Space Grotesk font, mobile-responsive grid cards." More detail = better results.
On the API or in Claude Code's CLAUDE.md file, set persistent instructions: your coding style, preferred frameworks, naming conventions. Claude follows these across the entire conversation.
Claude works best with context. Upload your existing code, style guide, brand docs, or examples of what you want. The more Claude knows about your project, the better its output.
Claude remembers the full conversation. Instead of starting over, say "that's close but make the headings purple and add pricing." Build on what works. Claude is great at incremental refinement.
| Feature | Claude | ChatGPT | Gemini |
|---|---|---|---|
| Writing quality | Best — most natural, nuanced | Good — sometimes generic | Good — can be verbose |
| Coding | Best — Claude Code is unmatched | Very good (GPT-4o) | Good (code execution) |
| Context window | 1M tokens (Opus) | 128K tokens | 1M tokens (Gemini 1.5) |
| Image generation | No built-in (use separately) | DALL-E built in | Imagen built in |
| Web browsing | Yes (web search) | Yes | Best — native Google Search |
| Google integration | No | No | Gmail, Docs, Drive, Calendar |
| Voice | Limited | Advanced Voice Mode | Voice available |
| Price | $20/mo Pro | $20/mo Plus | $20/mo Advanced |
Start for free at claude.ai. No credit card required.
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