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Slang AI

Slang AI is a voice AI platform purpose built for restaurants, built around its Superhost, which the homepage calls the most natural restaurant caller experience in the world. The distinction it draws is simple: voice AI answers the phone, while Superhost answers the guest. Guests can interrupt, change their minds, and switch topics just as they would with the restaurant's best host, and the agent keeps up. Superhost automatically detects and switches between 97 languages, even mid call, and restaurants choose from 20 premium voices and custom greetings to keep every location on brand. It responds from the restaurant's approved information rather than open ended AI guesswork, so guests get consistently accurate answers, and it continuously monitors and reviews all calls. When a guest's first choice is unavailable, it can suggest reservations at nearby or sister locations, increasing revenue across a group instead of losing the booking. Frequent diners and VIPs are identified automatically and routed straight to staff, skipping the concierge flow, and the team gets instant alerts for everything from private event inquiries to lost items. Official integrations cover the reservation and events systems restaurants already run: OpenTable, Tripleseat, Resy, SevenRooms, Perfect Venue, and Yelp, giving guests an end to end experience from call to confirmed booking. Operators quoted on the homepage include Texas de Brazil, reporting 96 percent caller satisfaction over the last 90 days, Merchants Hospitality Group, saving over a hundred hours per month, Red Rocks Cafe, which no longer loses callers to peak hour frustration, and The Fireman Hospitality Group, which relies on Slang to answer phones 24 hours a day without hiring or training new staff. Slang AI suits single restaurants and multi location hospitality groups that miss calls during service, after hours, or at peak, and want every guest call answered, booked, or routed without pulling staff away from the guests in front of them.

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Retell AI

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Vapi

Vapi

Vapi is a platform for building advanced voice AI agents, aimed at builders who want to configure agents on their own terms. Its homepage tagline is voice agents for builders, with the promise that teams can build, deploy, and improve voice agents as fast as they ship. Vapi presents itself as one unified platform for all of a team's voice agents, combining orchestration, real time monitoring, and enterprise grade configurability built for scale. Builders configure everything from voice and conversation flow to telephony and integrations, while Vapi handles the infrastructure so a team can move from prompt to production fast, with build, test, and deploy described as taking minutes. Once agents are live, Vapi is built around continuous improvement. Teams can track what is working across every call, surface what is not, and keep improving the experiences that drive their business forward. The homepage reports scale figures of 1 billion calls supported, 2.5 million or more agents launched, and 1 million or more developers, with average latency under 500 milliseconds. A customer quote from Ring on the homepage says that customer went from zero to production in two weeks, that 100 percent of its inbound volume now runs through Vapi, and that customer satisfaction scores have improved while its high bar for support was maintained. For enterprises, Vapi lists a support SLA with contractual uptime and performance guarantees and reserved capacity sized to volume, dedicated deployment support with a dedicated engineer embedded in the team to get live in a week, and scalable infrastructure that can scale to millions of calls. Security and control features listed include SSO, OAuth, and role based access control, AI guardrails built in to prevent model hallucinations and ensure data integrity, and compliance described as SOC 2, HIPAA, and PCI compliant, with 99.9 percent uptime stated for enterprise clients.

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