VoiceStack EU

VoiceStack EU compares what voice AI actually costs in European languages. It tracks 25 providers (Retell, Vapi, ElevenLabs, Deepgram, Soniox, AssemblyAI, Azure, Google, Twilio, Telnyx and more), normalizes every price to USD per minute with a source link and check date, and maps which providers support each of 33 European languages. There's a stack cost calculator, "cheapest provider" pages for every language, and a free weekly price-change newsletter. Built by a founder running a Bulgarian-language AI phone receptionist who couldn't find this data in one place. Free.