Claude
Anthropic
Anthropic's assistant for long-form writing, editing, and careful analysis.
Researchers, editors, and founders
Research
Answer engines and assistants used to brief a topic with sources attached.
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ChatGPT
OpenAI
OpenAI's general-purpose assistant for writing, analysis, and everyday work.
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Gemini
Google
Google's assistant, with a direct line into Google's consumer apps.
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Perplexity
Perplexity AI
An answer engine that cites the web pages it used.