Claude is the provider that unlocks everything Magnus can do. It is the only model family with full agentic tool use, which means the integrations, the web agent's toolbox, live web search and native PDF reading all run at their best on Claude.
Three capabilities are Claude-specific today: live web search with citations (the model searches mid-answer when a question depends on current information), native PDF reading (attach a PDF and Claude reads pages as pages - tables, layout and all), and the full integration toolset, where Magnus reads your Gmail, books calendar slots, posts to Slack and more as part of a single answer.
On the Bring-your-own-keys plan, paste an Anthropic API key in Settings. On the All-inclusive plan Claude is included - just pick it. You can also run different agents on different Claude models: Haiku for the quick-fire persona, Opus for the strategist.