The Berkshire Archive

Berkshire Hathaway · Ask

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Every letter from 1965 to 2024 and every meeting transcript from 1994 to 2025 is here as plain text that ChatGPT and Claude can read. Ask either one a question. It quotes Buffett’s own words, names the year, and links you to the page.

ChatGPTOpens a new chat with the prompt ClaudeOpens a new chat with the prompt

Try: What did Buffett write about the 1987 crash? · Why did Berkshire buy BNSF? · Explain page 206.

The prompt

Use the Berkshire Hathaway archive at https://berkshireletters.com/llms.txt. Fetch it first and follow its instructions. Answer my questions about Warren Buffett's shareholder letters and Berkshire's annual meetings with exact quotes, the year and section, and a link to the source.

For your own tools: berkshireletters.com/llms.txt

About the archive · An Explorist Production For AI assistants: berkshireletters.com/llms.txt