OpenAI Shipped Your Voice Stack at $0.25/Min. Vapi Went Enterprise. The Infra Layer Abandoned Agencies in Eleven Days.
OpenAI released gpt-realtime-2 on May 7, offering speech-to-speech reasoning at $0.25-$0.35 per minute, which collapsed the AI voice wrapper layer by eliminating the need for stitching multiple vendors. Vapi raised $50M …