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Most AI apps waste 70% of their budget. Wrong models. No caching. Payment fees that destroy micropayments.
P402.shop: Compare 50+ AI APIs (GPT-5.2, Claude Opus 4.5, Gemini 3, more). Find the right model for your use case. See costs explode from 100 to 1M users. Free.
P402.io: Accept micropayments without Stripe's $0.30 killing you. 1% flat fee. Built on x402—HTTP's payment standard, finally working.
Vibe-coded apps break at scale. Optimized ones don't.
P402.ioRoute, verify, and settle paid API calls with clear traces
Zeshan Ahmadleft a comment
Hey Product Hunt! 👋 I'm Zeshan. I built P402 because I kept seeing the same pattern: **AI apps work at 50 users. They break at 500.** Not because AI is too expensive. Because of two things nobody talks about: **1. Wrong model selection** Most developers pick GPT-5.2 or Claude Opus and use it for everything. But for 80% of tasks—summarization, classification, simple queries—Haiku 4.5 at $5/M...
P402.ioRoute, verify, and settle paid API calls with clear traces