Frustrated by the manual calculations of per-minute costs for various STT, TTS, and LLM providers while building voice AI agents, the author created a calculator tool. This tool allows users to adjust key parameters such as talk time, context length, and call duration, enabling them to observe cost variations across different provider combinations. The tool includes explanations of each component’s functionality and typical pricing models. Future plans involve incorporating more realistic platform pricing to account for additional markup from services like VAPI and Bland AI. The author welcomes feedback on how to enhance the tool’s usability.
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