Puter.js

Claude 4 API Free: 3 Methods for Unlimited Access in 2025

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Get Claude 4 API free through Puter.js (100% unlimited), LaoZhang.ai ($10 credits + 70% savings), or Claude.ai daily access. Complete implementation guide with code examples for Opus 4 and Sonnet 4 models. No credit card required.

Free Claude Sonnet API: Complete Access Guide 2025

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Access free Claude Sonnet API through 5 proven methods. Learn Puter.js browser integration, save 60% with laozhang.ai, and explore open-source alternatives. Complete implementation guide with code examples for developers seeking Claude 4 capabilities without official free tier.