Claude + Webtwizz

Claude Haiku is the fastest and cheapest tier. Right for high-volume classification, simple extraction, routing decisions. If you only need a quick yes/no or category from text, Haiku is the call.

Claude Sonnet is the workhorse. Strong coding, strong long-context retrieval, conversational tone Anthropic is known for. Right default for chatbots, agents, RAG synthesis, anything where quality > raw speed. Webtwizz defaults ANTHROPIC_MODEL to claude-sonnet-4-6 if you don't set it.

Claude Opus is the top tier: best reasoning, best multi-step planning, best at understanding nuanced instructions. Use for complex code generation, agentic workflows that span many steps, content where small quality differences matter (sales copy, customer-facing communication).

The 1M context tier (claude-opus-4-7[1m]) is the big differentiator vs OpenAI right nowyou can stuff your entire codebase, full doc set, or hours of meeting transcript into a single prompt. Burns tokens but unlocks "talk to my entire knowledge base" patterns without building retrieval first.

Pricing wise: Haiku < GPT-4o-mini, Sonnet ~ GPT-4o, Opus > GPT-4o. Pick on quality requirements, not price.

Claude has three capabilities that OpenAI doesn't match directly today, worth knowing if you're choosing between them:

Tool use (function calling). Same shape as OpenAI's, but Claude's tool-choice and parallel tool-calls are more reliable for multi-step agents. The pattern: define tools, Claude calls them, you run them, return results, Claude calls more tools or returns text. Webtwizz can scaffold agent loops on either provider, Claude tends to need less prompt engineering to behave.

200K and 1M context. Sonnet has 200K, Opus has a 1M-context tier. The pattern this unlocks: "drop in 500 pages of documentation and ask questions" without building a retrieval system first. Right for legal/contract analysis, long meeting summaries, large codebase Q&A. Cost is the constraint, expect to pay per query.

Computer use. Claude can navigate UIs by looking at screenshots and emitting click/type commands. Still experimental, but workable for browser automation tasks. Useful for QA agents and form-filling bots. Webtwizz can scaffold a computer-use loop if you describe the task.

When to NOT use Claude: if you're already running on OpenAI and your latency floor matters (Claude tends to be ~1.5–2x slower first-token than GPT). Otherwise, default to Claude Sonnet for new chatbot work, the conversation quality is meaningfully better.