Simon Willison’s Weblog

18th February 2026

Tool Gemini Prompt — Generate responses from Google's Gemini API with support for system prompts, model selection, and streaming output. The interface stores your API key securely in local storage and maintains a history of system prompts for quick reuse. Markdown formatting is automatically rendered in the output area, and you can copy responses to your clipboard with a single click.

Posted 18th February 2026 at 6:58 am

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This is a beat by Simon Willison, posted on 18th February 2026.

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