https://stelt.ai/blog Building twelve startups in twelve months, in public. en https://stelt.ai/blog/ai-for-your-business-without-the-surprise-bill https://stelt.ai/blog/ai-for-your-business-without-the-surprise-bill Thu, 02 Jul 2026 00:00:00 GMT Every business wants an AI assistant and fears the runaway cost. Here's the honest way we price it at Stelt — you bring your own keys, pay for AI at cost, and see every cent. No markup, no black box. https://stelt.ai/blog/voice-ai-saas-on-a-raspberry-pi https://stelt.ai/blog/voice-ai-saas-on-a-raspberry-pi Thu, 25 Jun 2026 00:00:00 GMT The first of twelve startups in twelve months runs on a Raspberry Pi behind my desk. Here's the architecture, the costs, and why cheap hardware is a feature, not a compromise.