Vapi adds Grok STT and TTS

Vapi's focus on pricing and latency addresses the two biggest pain points in the voice AI market: cost and conversational lag.

• –Consolidating TTS and STT under a single orchestration layer simplifies the developer experience significantly.
• –High-fidelity, natural voices are critical to making voice agents feel human, while cost-effective transcription allows for scaled enterprise deployment.
• –Vapi positions itself as a dominant middleware layer rather than building proprietary foundation models, allowing them to easily swap in the best-performing models as the market evolves.