Best of Theo - t3․gg — September 2025

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    Ripple: a new framework that takes the best of everything

    Ripple is a new TypeScript UI framework created by Dominic Gannaway, one of React's original creators and a lead Svelte maintainer. The framework combines the best features of React, Solid, and Svelte into a JavaScript-first approach with reactive state management using dollar sign prefixes. Key features include component-based architecture, JSX-like syntax with enhancements, built-in TypeScript support, and the ability to write JavaScript statements directly within markup. Ripple introduces new keywords like 'component' and allows flexible code organization where developers can intersperse TypeScript and markup as needed, rather than following strict file structure requirements.

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    "AI Startups" are over done (finally)

    Y Combinator's Summer 2025 batch shows a significant shift away from generic AI startups toward companies that deeply understand their target industries. Instead of developers building AI tools for unfamiliar domains, successful companies now combine deep domain expertise with AI capabilities. Examples include Nautilus (car wash platform by someone who worked in car washes since age 16) and co-create (video tools by actual video editors). This trend reflects higher acceptance standards and better investment outcomes, with domain experts learning AI rather than AI experts trying to understand new industries.

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    Video
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    It's not just you (Claude did get dumber)

    Anthropic's Claude models experienced significant quality degradation and reliability issues over several months, with multiple bugs affecting model intelligence going unnoticed and unacknowledged for extended periods. The company's lack of transparency, poor infrastructure reliability, and prioritization of research over user experience has created trust issues. Alternative providers like Google Vertex and AWS Bedrock offer better uptime for Claude models, and services like OpenRouter provide failover capabilities to avoid single-provider dependency.

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    Video
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    Cloudflare and Vercel can't stop fighting

    A detailed analysis of the ongoing public feud between Cloudflare and Vercel, examining the technical and business reasons behind their conflict. The dispute centers around edge computing reliability issues, where Cloudflare's free and pro tiers route 10-70% of US traffic to Europe during peak hours, causing significant latency problems for Vercel's customers. Additionally, Cloudflare's DDoS protection layer interferes with Vercel's own security systems by stripping important traffic data. The conflict escalated from technical incompatibilities to personal attacks between executives, with both companies engaging in bad faith public communications that damage their professional reputations.

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