Changes in the system prompt between Claude Opus 4.6 and 4.7
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April 20, 2026
Simon Willison
Anthropic are the only major AI lab to publish the system prompts for their user-facing chat systems.
"Changes in the system prompt between Claude Opus 4.6 and 4.7" — the test: does this make AI feel a little more approachable or useful? We think it does.
Simon Willison
Tutorials like this are how most people have their first real AI moment. Give it 15 minutes.
Hugging Face Blog
"Building a Fast Multilingual OCR Model with Synthetic Data" — read it for the practical angle, not the hype.
Google AI Blog
Worth knowing about: "7 ways to travel smarter this summer, with help from Google". File it away and come back when you have a problem it might solve.
Simon Willison
Worth 3 minutes: "Qwen3.6-35B-A3B on my laptop drew me a better pelican than Cla...". Sometimes the most useful things aren't the loudest headlines.
Google AI Blog
Worth 3 minutes: "A new way to explore the web with AI Mode in Chrome". Sometimes the most useful things aren't the loudest headlines.
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Spend 10 minutes this week trying a free AI tool you've never used. Start with one thing, not everything.
68 Million AI Crawler Visits Show What Drives AI Search Visibility via @sejournal, @martinibuster
Research on 68 million AI crawler visits show what SEOs should do to improve AI search performance The post 68 Million AI Crawler Visits Show What Drives AI Search Visibility appeared first on Search Engine Journal .
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