Lilac Labs (legal name: Speech Intelligence Inc) is a San Francisco-based startup founded in 2022 and backed by Y Combinator (S24 batch), Khosla Ventures, and Zhu Ventures, having raised approximately $4.7M in total funding. The company markets its product at drive-thru.ai and lilaclabs.ai. Its core product, Lilac Voice, is a multi-lingual AI voice agent that replaces the human order-taker at a drive-thru speaker post. When a customer pulls up and speaks, Lilac Voice processes the request in real time, handles customizations and ingredient questions, and sends the completed order directly to the kitchen display and POS system — without any human in the loop. The system integrates with major restaurant technology stacks: PAR Brink POS, Aloha, Toast, HME NEXEO drive-thru headset/audio platform, Delphi order confirmation boards, Punchh loyalty, and Paytronix. This breadth of integration means most enterprise QSR chains can deploy without replacing existing hardware or software. Lilac Labs targets quick-service restaurant (QSR) operators facing labor shortages and rising minimum wages. The US drive-thru market comprises roughly 200,000 locations handling 6 billion visits per year, representing 70% of QSR revenue. The company claims its system achieves 98% order accuracy and can deliver approximately $100,000 per location per year in combined labor savings, upsell revenue, and reduced training costs. Founders are ex-Tesla engineers and Berkeley researchers, and the company reported hundreds of restaurant deployments as of its YC launch in 2024. Key features: - Multi-lingual voice AI agent handles drive-thru order-taking end-to-end without human involvement - 98% order accuracy with real-time menu comprehension including ingredients and allergy information - Automated upselling prompts consistently applied to every order - Integrates with PAR Brink POS, Aloha, Toast, HME NEXEO audio, Delphi confirmation boards, Punchh, and Paytronix - Direct kitchen-display and POS injection — no manual re-entry - Works with existing drive-thru audio hardware (no full infrastructure replacement needed) - Labor cost savings equivalent to up to one full-time employee per location
Lilac Labs AI Voice Agents Pricing The pricing for Lilac Labs' AI voice agents is not available.