Slang AI vs LLDTEK for restaurant phones: pricing, reservations and fit

Slang AI is a voice agent built only for restaurants. It answers the phone around the clock, books, changes and cancels reservations in OpenTable, Resy, SevenRooms and Yelp, and sends private-dining leads to Tripleseat. Core starts at $399 per location, Premium at $599, and Enterprise is quoted. LLDTEK is a broader agent platform for appointment and reservation businesses. It answers calls, texts and web chat in one conversation beside OpenTable, Resy or Toast, and texts waitlist parties when a table opens. If reservation calls are the whole problem, Slang's restaurant integrations go deeper.

The harder question for a general manager is not which agent sounds better. It is which system holds the truth at each moment of a busy night, and whether the agent reads that system or guesses. The Friday walk-through below answers that one call at a time.

LLDTEK publishes this site and sells one of the two products compared here, so read the comparison with that in mind. Slang's prices are as of November 2026; confirm the final quote before signing.

What Slang AI does

Slang describes its product as an "AI Superhost" for restaurants and restaurant groups. It answers inbound calls from the restaurant's approved information, routes frequent diners and VIPs straight to staff, and names six integrations: OpenTable, Resy, SevenRooms, Yelp, Tripleseat and Perfect Venue. The whole site is written for restaurants.

Which reservation systems does Slang AI book into?

OpenTable is the deepest connection. Slang describes OpenTable as a partner, and guests can book, modify and cancel OpenTable reservations by phone, 24/7. The agent checks OpenTable availability, the reservation lands in OpenTable, and the guest gets a voice and a text confirmation. Slang's Resy integration describes the same three actions against Resy availability.

Slang's pages for SevenRooms and Yelp describe booking by phone against each platform's availability with a voice and text confirmation, and its product page says guests can make, change or cancel reservations across OpenTable, Yelp and SevenRooms. Tock and Toast are not on Slang's published integration list.

Private dining takes a separate route. Slang says it captures the private-dining lead and sends it to Tripleseat in real time, where the events manager is notified and follows up. Its pricing page lists Perfect Venue alongside Tripleseat for events.

Two things are missing. Slang's product, pricing and integration pages don't describe a waitlist, and they don't say how large a party the agent will book before a person takes over. Its Superhost announcement lists large-party booking flows among the capabilities rolling out from launch and over the coming months. Both matter on a Friday, so ask about them directly.

Languages, hours and handoff

Slang's product page says it answers every inbound call and manages reservations 24/7, and keeps call recordings, summaries and transcripts in one place. Multi-location groups get performance ranked across locations.

Languages depend on the plan. On the US pricing page, Core includes Spanish ("Bilingual Support"). Premium adds Superhost, which detects and switches between 97 languages, even mid-call. On the Canadian and Australian versions of the page, bilingual support sits on Premium instead.

When a caller needs a person, the pricing FAQ says the agent forwards the call, or texts a link with the restaurant's contact details if you set it up that way. Slang's restaurant page adds custom call routing to send the right calls to the right staff.

Superhost is new. Slang's Superhost announcement dates from early October 2026, says more capabilities are coming "over the months ahead", and says Superhost "is being built to remember prior conversations". Treat guest memory as a roadmap item until you see it work on your line.

Setup is fast by design. The FAQ says Slang needs less than 30 minutes of your time and can go live the same day; the same page says most operators are live in the first week. You get a new local or toll-free number for your website and Google Business Profile; keeping your existing number is something to discuss with Slang's onboarding team.

How Slang AI pricing works

Slang shows starting prices. Its pricing page lists three plans, each with a "Get a quote" button.

The pricing page does not state a call allowance or a setup fee. The Canadian and Australian tabs list Private Events as an a-la-carte product with no price. Ask for all three in writing.

The contract is where "starting at" gets its meaning. Slang's terms of service set fees by order form. If usage passes the limits on that form, measured as a monthly average once a quarter, later invoices move to the applicable price tier. Order forms renew automatically for the same length as the first term unless either side gives notice at least 30 days before it ends. A customer can end the agreement by written notice within 30 days of the effective date, which the terms call the pilot period, with a refund of fees paid for evaluation services. Unless the order form says otherwise, fees are invoiced monthly in advance and are not refundable outside the pilot period.

Across three locations the starting gap is $600 a month; ask whether a quiet location can sit on Core while the others take Premium.

LLDTEK publishes no price at all, so the same arithmetic is impossible on its side today. LLDTEK quotes after a thirty-minute demo, and watches one live day with the restaurant before billing starts. Its site does not publish contract length or renewal terms either, so ask for them in writing too.

What Slang AI reviews say

Slang has a G2 listing with a small number of reviews for a vendor that says it has 2,000+ restaurant locations live, so read the individual reviews rather than the average. Filter for operators on your reservation platform and look for comments on wrong bookings, transfers that failed during service, and renewal.

The customer quotes on Slang's homepage come from restaurant groups such as Merchants Hospitality Group, Texas de Brazil and Bluegrass Hospitality Group. They are chosen by Slang, as every vendor's are.

LLDTEK's restaurant pages use composite examples rather than named restaurant customers, and LLDTEK publishes no restaurant results. On published restaurant proof, Slang is ahead.

What LLDTEK does for restaurants, and where it is thinner

LLDTEK runs five agents: front desk, recovery, rebooking, reviews and live floor. Restaurants are one of several kinds of business it serves, alongside salons, clinics, studios and field teams. Its restaurant solution page describes what the agents do on a dining-room floor:

• Answer reservation calls, texts and website chats while the host is seating guests, and book a table only when the reservation book shows room for that party size.
• Hand any party above a size you set to a person, with the date, headcount, occasion, budget and dietary needs already collected.
• Text the first waitlist party that matches a cancelled table's size and type, and hold the table for the window you set before moving on.
• Answer allergen questions only from notes the kitchen has written, and pass anything else to a manager.
• Keep each location's hours, menu, tables and contacts separate in a group.

Replies go out in the language the guest used. Calls, texts and web chat share one thread, so a guest who calls and then texts does not start over. The review agent sends one Google review request after a visit.

Now the thinner part. LLDTEK's pages name three restaurant systems: OpenTable, Resy and Toast. Its OpenTable page does not claim to be one of OpenTable's voice partners, and says how bookings the agent makes show up in your account is checked on the demo. The same page says plainly that if one of OpenTable's voice partners already handles your reservation calls well, you may not need LLDTEK for those calls. LLDTEK does not list SevenRooms, Yelp, Tripleseat or Perfect Venue as integrations, and LLDTEK does not take takeout orders into Toast.

A Friday night, call by call

Take a 110-seat restaurant on OpenTable with the online waitlist switched on, a 16-seat private room booked through the events manager, and a house rule that parties above six need a manager. Here is one Friday, and the system that should hold the truth at each step.

4:40 pm: a party of eight for 7:30 tonight

The truth lives in two places: OpenTable's availability for eight, which depends on which tables combine, and the house rule that eight needs a manager.

Slang checks OpenTable availability and can book with a voice and text confirmation. Its Superhost announcement says operators can build their own large-party booking flows, but its pages do not say what the caller hears above your limit.

LLDTEK works to a party-size limit you set. Above it, the agent collects the details and hands the call to the manager instead of booking.

Whichever you choose, the phone cut-off should match the largest party your OpenTable settings take online. Otherwise the phone becomes the back door for tables the floor plan was never set up to give away.

6:20 pm: "How long is the wait for two?"

The truth is the host's quote and OpenTable's waitlist. No agent should invent a number.

Slang's pages don't describe a waitlist, so find out what it tells this caller.

LLDTEK sends the caller to OpenTable's online waitlist, or says what you want said while it is paused. The quote stays with the host, which matters because, as the guide to running a restaurant waitlist by text shows, a 25-minute quote that turns into 40 is how the table is lost.

6:45 pm: the private room for 22 next month

The truth is the events manager's calendar, and Tripleseat or Perfect Venue if the restaurant runs one.

Slang captures the lead and sends it to Tripleseat as it comes in, and Premium raises a real-time alert. If your events team lives in Tripleseat, this is the cleanest step of the night for Slang.

LLDTEK collects the date, headcount, occasion, budget per head and dietary needs, then hands the conversation to the events lead. LLDTEK does not list Tripleseat as an integration, so ask on the demo how the enquiry reaches it.

7:35 pm: the 8:00 four-top cancels

The truth is OpenTable. The cancellation has to land there before anyone offers the table.

Slang can take the cancellation by phone and write it to OpenTable. Its pages say nothing about refilling the table.

LLDTEK's recovery agent texts the first waitlist party that fits a four-top and holds the table for the window you set. How the agent learns that a table has opened, and which list it texts, is set up on the demo. Decide in advance whether OpenTable or the agent sends that text, so no party hears twice about the same table. The walk-through on filling a cancelled reservation covers the hold and the order.

8:05 pm: "Running 15 minutes late"

The truth is the host and the house hold policy.

Slang's pages describe outbound texts, such as links and confirmations. They do not describe a guest texting back to the restaurant's number. Premium's Smart Inbox sorts guest follow-ups into a priority queue for staff, and the Canadian and Australian Premium plans add "Direct Text", described as fully automated AI-powered texting. Ask whether that covers a guest texting the restaurant's number.

LLDTEK answers the text on the same thread, gives the guest the hold policy, and tells the host.

9:50 pm: a Portuguese-speaking caller asks whether the tiramisu has nuts

The truth is the kitchen's written allergen notes, and the manager when they don't cover the question.

Slang answers from approved information. Core's second language on the US page is Spanish, so a Portuguese answer would need Premium's 97-language Superhost. Ask Slang to confirm Portuguese is among them.

LLDTEK answers only from the kitchen's notes and passes cross-contact questions to the manager on duty. Its pages say it replies in the language the guest used but don't list languages, so test Portuguese on the demo.

What the night shows

The agent is never the system of record. OpenTable holds the tables, the host holds the wait, the events manager holds the room, and the kitchen holds the allergens. A good agent reads the right one and knows when to stop, which is the same rule set out in when an agent should hand off.

Slang AI and LLDTEK side by side

Choose Slang AI if…

Most of your calls are reservations, and your book is OpenTable, Resy, SevenRooms or Yelp. Slang writes bookings into those systems directly, and that is its whole job.

Your events team works in Tripleseat or Perfect Venue and wants leads to arrive there without retyping.

You want a starting price before a sales call and a line that can be live within days.

Your guests call in many languages, and Premium's 97 languages cover them.

You run several restaurants and want calls for a full room offered at a sister location.

Choose LLDTEK if…

Your guests text the restaurant's number and use web chat as often as they call, and you want all three in one conversation.

You want a cancelled table offered to the right waitlist party, one text at a time, rather than left for the host to notice.

You run Toast Tables, which is not on Slang's integration list. LLDTEK works beside Toast, though how bookings reach Tables is agreed on the demo.

You run restaurants alongside other appointment businesses, such as a spa or a salon, and want one platform across them.

You would rather have the house rules written with your general manager, and watch a live day before paying anything.

Questions to settle before you sign either

Run these against your own book during a demo or pilot, not on a sample account.

1. Party size. Call for eight at a busy hour. Does the agent book it, offer another time or hand off, and who set that limit?
2. Table combinations. Ask for a time when only a combined table could seat the party. Does the agent offer it, and does it appear correctly on the floor plan?
3. Cancellation. Cancel a test booking by phone and check the platform. Is the table back in inventory, and does anyone get offered it?
4. Waitlist. Ask how long the wait is. Does the agent quote a number, point to the waitlist, or say something your host would not?
5. Private events. Ask for a buyout. Where does the lead land, and how fast does the events manager see it?
6. Off-script text. Text "running late" or "can we bring a cake" to the restaurant's number. Who answers?
7. Contract. Get the billing period, usage limits, add-on prices, renewal terms and cancellation window in writing.

Which one belongs on your stand phone

If the phone is mostly reservations and your book is OpenTable, Resy, SevenRooms or Yelp, Slang AI is the more direct answer. It is built for that one job, writes into those systems itself, shows a starting price, and can be live within days. LLDTEK earns a look when the missed work goes beyond the call: texts and chats that need answers, a waitlist that should hear about the cancelled four-top, and house rules you want written and watched with your managers before you pay.

Either way, decide which system holds each truth before the agent goes live, then test the Friday moments above against your own book.