I tested Vapi and its major alternatives these last days, there're all still young but Vapi is the best so far! Web SDK, good documentation, lots of choices (LLM/STT/TTS models, etc) 👏
The support team at Vapi is fantastic. Anytime we hit a snag, they're quick to respond and provide detailed solutions. Their proactive approach ensures that we never face prolonged downtimes or major issues, keeping our projects on track.