TokenWatch – Real-Time AI API Cost Monitor for OpenAI/Anthropic/Gemini

Show HN: TokenWatch – Real-Time AI API Cost Monitor for OpenAI/Anthropic/Gemini

Operating in show hn launch, TokenWatch – Real-Time AI API Cost Monitor for OpenAI/Anthropic/Gemini operates.

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Hey HN! Built this after watching engineering teams repeatedly get surprised by AI API invoices — no visibility into spend until the bill landed.TokenWatch connects to your OpenAI, Anthropic, and Gemini keys and gives you: - Real-time spend dashboard across projects - Budget thresholds with proactive alerts - Anomaly detection for unusual cost spikes - Duplicate call detection (biggest source of wasted spend I've seen)Free tier supports up to 3 AI systems. Built this in ~2 days as a solo project. Happy to answer anything about the build or the problem space.

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Website: tokenwatch-ten.vercel.app