What Onsai does

Onsai GmbH is a Berlin-based, privately held AI company founded in 2024 that sells agentic AI agents to the hospitality industry for automating guest communication and operational workflows. Its core product suite comprises five specialized agents: a Voice Agent handling natural-language phone conversations in 25 languages around the clock, a Messaging Agent covering website chat and WhatsApp, an Email Agent integrated with Microsoft 365 and Gmail, a Reservation Check that validates OTA bookings against the property management system (PMS), and a Commission Check that reconciles OTA commission statements. The platform is built on open-source AI models, hosted in the EU under a 100% GDPR-compliant privacy-by-design architecture, and natively integrates with leading PMS platforms including Mews (with a Marketplace listing), Apaleo, and Oracle Opera Cloud.

The company operates a SaaS subscription model with quote-based, monthly billing tied to property count and call volume, targeting hotels, resorts, serviced apartments, and conference properties in the DACH region. Its go-to-market combines direct enterprise sales (demo-led) with partner-driven distribution through the Mews Marketplace. The current customer base is concentrated among German hospitality brands, including Titanic Hotels Berlin, Göbel Hotels, Castanea Resort, Halbersbacher Hospitality, Kongresshotel Potsdam, Hotel Am Augustinerplatz, and McDreams Hotels. Onsai employs 1–10 people and is led by co-founder and CEO Jochen Emig.

In 2025 Onsai completed a seed financing round of approximately $1.17 million led by SIVentures (Smart Infrastructure Ventures) and participated in the SpinLab – The HHL Accelerator program. The company has received three industry awards in 2025 — the IHA Start-Up Award from the German Hotel Association, the Nest des Flamingos from SO!APART!, and the Travel Start-Up Night from the Travel Industry Club & VIR — validating its positioning in the European hospitality AI segment. Revenue has not been disclosed, and the small employee count, recent seed stage, and limited public customer base indicate an early commercial phase.

Name

Onsai

Legal name

Onsai GmbH

Website

https://onsai.io

Company type

Private

Founded year

2024

Operating status

Operating

Headcount range

11–50 employees

Short description

Onsai GmbH is a Berlin-based AI company that sells agentic AI agents to European hotels and resorts for automating guest communication (voice, messaging, email) and back-office workflows such as OTA reservation validation and commission reconciliation, natively integrated with major PMS platforms.

Ownership category

akta.pro rank

Product category

Hospitality AI Software

NAICS

Software Publishers (5132)

SIC

Services-Prepackaged Software (7372)

akta.pro primary industry

Contact Center Speech AI (agent assist, IVR automation) (HDAAAFAL)

Keywords

• Hospitality AI agents
• Guest communication automation
• Hotel voice assistant
• PMS integration software
• Reservation validation tools

Headquarters

HQ city

Berlin

HQ country

Germany

HQ region

Europe

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Infrastructure, Operations

Revenue model

1. SaaS Subscription - AI Agent Services: Onsai generates revenue through recurring SaaS subscriptions for its AI agent services (Voice, Messaging, Email, Reservation Check, Commission Check). Pricing is based on usage/call volume and property count. The model targets multi-property hotel groups requiring centralized communication automation.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels6 records

Core offering

Onsai builds and sells an agentic AI software platform for the hospitality industry that automates guest communication and operational workflows. Its suite of AI agents — Voice Agent, Messaging Agent, Email Agent, Reservation Check, and Commission Check — handle multilingual phone calls (25 languages), chat, email responses, OTA booking validation, and commission reconciliation, integrating natively with PMS systems such as Mews, Apaleo, and Oracle Opera Cloud. The product is delivered as a SaaS subscription sold to hotels, resorts, and serviced apartment operators.

Product overview

Onsai is an Agentic AI platform for the hospitality industry offering a comprehensive suite of intelligent agents that automate guest communication and operational processes. The platform architecture consists of five specialized AI agents: Voice Agent (multilingual phone conversations), Messaging Agent (chat across website and messaging apps), Email Agent (automated email responses), Reservation Check (OTA booking validation), and Commission Check (commission reconciliation). These agents share a common platform infrastructure including an Analytics Dashboard for real-time insights and a Knowledge Base for managing FAQ content. The platform natively integrates with leading hospitality PMS systems including Mews, Apaleo, and Opera Cloud.

Differentiator

Problem solved

Functional benefit

Products and services

• Voice Agent AI-powered phone agent that conducts natural, multilingual voice conversations 24/7, answering guest inquiries, taking bookings, and providing guest service across 25 languages for hotels, resorts, and serviced apartments.
• Messaging Agent AI conversational agent for website chat, WhatsApp, and other messaging platforms, delivering fast, contextual, on-brand responses to guest inquiries for hospitality operators.
• Email Agent Automated email response agent that answers incoming guest emails using live PMS data, integrated with Microsoft 365 and Gmail, for hospitality operators.
• Reservation Check Automated OTA reservation validation tool that compares online travel agency bookings against PMS data, catches discrepancies, and corrects faulty bookings before they cause operational issues for hotels.
• Commission Check Commission reconciliation agent that automatically compares commission statements between OTAs and the PMS, reducing manual reconciliation time by 75% for hotel operators.

Quantifiable outcome

• 68%+ of calls automated by AI agents
• +3 more outcomes

Named customers7 records

Segments1 record

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration9 records

AI capability8 records

Feature8 records

Partnerships

Three partnerships are on record, tiered core.

• MewscoreTechnology or IntegrationOnsai is listed on the Mews Marketplace as an integrated guest experience solution. The integration provides real-time availability from Mews, direct reservation placement in Mews timeline, guest history sync for personalized service, and scalable multi-property operations with centralized management.
• ApaleocoreTechnology or IntegrationNative integration with Apaleo PMS platform, enabling AI agents to access real-time property data and booking information for accurate guest responses and reservation management.
• Opera CloudcoreTechnology or IntegrationNative integration with Oracle Opera Cloud PMS, providing connectivity to one of the most widely deployed hotel management systems for enterprise properties.

Scale indicators4 records

Recent moves5 records

Expansion highlights6 records

Direct peers

• Asksuite: Brazil-based AI booking and guest communication platform serving hotels worldwide. Most directly comparable peer: offers AI booking assistants, WhatsApp/chat automation, and multilingual guest communication for hotel groups, overlapping with Onsai's Voice, Messaging, and Email agents.
• HiJiffy: Portuguese AI-powered guest communication platform for hotels and resorts. Directly comparable: combines AI chatbot across web, WhatsApp, and messaging channels with PMS integrations and multilingual support — a very similar product architecture to Onsai's Messaging and Email agents.
• PolyAI: UK-based voice AI company whose flagship product is a multilingual conversational phone agent for enterprise customer service, with hospitality as a flagship vertical. Directly comparable to Onsai's Voice Agent in capability, customer type, and underlying approach to natural, multilingual phone automation.
• Whistle: US-based guest messaging platform purpose-built for hotels, enabling two-way SMS, WhatsApp, and web chat between guests and hotel staff. Comparable to Onsai's Messaging Agent though narrower (no voice/email/commission modules), making Onsai the broader platform play in this overlap.
• Kipsu: Real-time guest messaging platform focused on hotels and hospitality, supporting web chat, SMS, WhatsApp, and Facebook Messenger. Comparable in customer base and use case to Onsai's Messaging Agent, though Kipsu is more human-staffed-with-AI-assist than fully autonomous AI agents.

Broad incumbents

• Mews: Cloud-native PMS and hospitality operations platform widely adopted by boutique and lifestyle hotels in Europe. Also a critical Onsai integration partner (Mews Marketplace), making Mews simultaneously a channel and a potential platform-level competitor as it expands its own AI capabilities.
• Cloudbeds: Global hotel management platform combining PMS, channel manager, and booking engine. Increasingly layering guest communication and AI features that overlap with Onsai's value proposition, particularly for independent and mid-market hotel groups in DACH and beyond.
• Revinate: Hospitality CRM and guest communication platform used by hotel groups for email, guest surveys, and marketing automation. Comparable in customer base and adjacent in email/guest communication functionality to Onsai's Email Agent, though not a voice-AI-first platform.
• TrustYou: Guest experience platform for hotels covering reviews, surveys, and messaging. Comparable in hospitality customer base and communication-related workflows; competes for some of the same guest-experience budget that Onsai targets with its AI agents.

Emerging players

• SoundHound for Hospitality: Voice AI offering from SoundHound tailored to restaurants, hotels, and hospitality. Comparable on voice-AI-in-hospitality positioning to Onsai's Voice Agent, but comes from a public-company speech AI specialist rather than a hospitality-native vendor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/onsai-intelligence
• Instagraminstagram.com/onsai.intelligence

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds2 records

Investors2 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Onsai