Onsai develops Agentic AI for hotels: digital employees who answer calls, check bookings, and assist guests in 25 languages. Automate your communication and enjoy genuine relief and higher service quality.
24/7
Availability
25
Languages
70%
of Calls Automated
100%
GDPR-compliant
Our AI acts as your personal virtual assistant: it answers inquiries, takes bookings, and makes decisions independently - always available for continuous service.
Available 24/7 so you never miss a request again
25 languages available natively, including seamless mid-conversation switching
Guest address, tone of voice & persona controllable
Works seamlessly with PMS such as Mews and Apaleo
Automated booking management and real-time changes
Improved response times with minimal latency for a seamless conversational experience
Onsai offers you a comprehensive solution for digital guest communication and process automation.
Natural and multilingual communication that impresses guests and takes the pressure off your team.
The AI reservation check: Checks OTA reservations and changes incorrect bookings or informs the team.
Your AI-powered chatbot for websites and messaging platforms.
Takes care of reconciling commission statements between OTAs and PMS, saving 75% of the time.
What our customers and partners say
‘Onsai offers McDreams Hotels enormous benefits: Since our launch as a pilot customer in February 2024, we have automated over 60% of all calls and optimized the reservation check. This significantly reduces our costs, increases efficiency and ensures that we are available 24/7 and can offer a very high quality of information. A real game changer for us.’
“Onsai delivers what many promise: real relief, better availability, and a noticeable improvement for both staff and guests. We’re excited to continue supporting this strong team on their journey.”
Our AI is based on secure open source technology, is 100% GDPR-compliant and can optionally be operated on-premise - for maximum data sovereignty.
Would you like to speak directly to our experts in the sales team? Then contact us at the following number
Deeply integrated
Seamless processes through integration with PMS, telephone systems, guest journey tools, CRM & table reservation tools
Data privacy by design
Open-source models trained specifically for the hospitality industry & EU hosting – guest data stays in Europe.
Multiproperty
Scalable for all hotels of a brand — or for one hotel with many outlets.
Customised to your needs
Voice, addressing, languages, and tone of voice aligned with your brand
More than just a design. It's our philosophy.
Smooth interactions that flow naturally into one another. Onsai integrates into existing systems and workflows without disruption or additional effort.
Our technology speaks for itself: no complicated interfaces, no unnecessary clicks, no noise—just what really matters.
The best technology is the kind you don't notice. Onsai disappears into the background, allowing teams to focus on what matters most.
Adapts to the individual needs of each hotel and learns from every interaction. Like a mirror, it shows optimization suggestions and provides valuable insights into the guest experience.
Learn how Onsai can take your guest communication and operational efficiency to the next level. Schedule a demo or learn more about our solutions.
Each voice brings its own perspective: from years of experience in the hotel industry to in-depth technological expertise.
CEO
Harvard graduate, Google Developer Expert for Voice AI
COO
Award-winning hotel management professional
CPO
Expert for hotel tech integration
CCO
Experienced hotel technology strategist
Maybe there’s room for your voice, too:
Our name, derived from the Japanese word “onsei” (voice), reflects our mission. Together with leading hoteliers, we want to make the Voice of Hospitality clearly audible again.
Bei Onsai sind unsere Mitarbeitenden nicht einfach Teammitglieder – sie sind die Stimmen, die unsere Vision lebendig machen.
Onsai has set itself the task of redefining the voice of the hotel industry. We create digital employees who act independently, are seamlessly integrated into hotel structures, and noticeably relieve the burden on the team.
With Onsai, you get exactly what your hotel needs most: time for the essentials. Experience real relief with our digital employee, who gets things done instead of just being there.
More than 70% of calls handled automatically - keep your team concentrated on the essentials.
Reduce human errors in bookings and billing with AI-supported processes
Save on personnel costs without compromising service.
Immediate answers, personalized service - at any time of day or night.
Like our AI, we provide you with all the information you need to know. So you can quickly determine whether we are a good fit.
Agentic AI describes a new generation of artificial intelligence that not only responds to requests, but acts independently, makes decisions and actively controls processes. In contrast to classic, rule-based automation solutions, Agentic AI recognises complex interrelationshipsprioritises tasks and proactively initiates actionswithout the need for human intervention.
At Onsai, this means that our AI agents work like digital assistantsthat not only retrieve information, but also create bookings independently, forward calls intelligently and optimise operational processes - all in real time, securely and perfectly integrated into your hotel systems.
Onsai offers Agentic AI for hotels,that goes far beyond simple automation. Instead of just answering enquiries, Onsai acts as an intelligent, autonomous AI agent,that proactively takes on tasks, makes decisions and optimises processes.
Our specially trained open source models guarantee 100% data security and a deep integration into your existing systems such as PMS and telephone systems. Onsai not only understands the context of guest enquiries, but also acts independently - from processing bookings and reservations to intelligently managing calls, chats and emails.
Hotels benefit from maximum efficiency, a significant significant reduction in staff costs and a customised, proactive guest experiencethat makes all the difference.
Data protection is a top priority at Onsai:
100% GDPR-compliant - No storage or disclosure of sensitive data.
Use of open source AI models - Hosted in Europe on secure servers.
Independent of closed AI providers - By using specially trained open source models, we can train the AI to meet the specific requirements of the hotel industry. We are also independent of the arbitrariness of US cloud services such as OpenAI or Anthropic.
On-premise hosting possible - For maximum data security, we also offer hosting in our enterprise customers own cloud.
Onsai currently supports the following channels:
Telephone (Onsai Voice) - Automatic answering and processing of calls, including bookings
Chat (Onsai Chat) - AI-supported communication via website, WhatsApp and Messenger
Email (Onsai Email) - Automatic answering and forwarding of e-mail enquiries
Reservation check (Onsai Check) - Intelligent comparison of OTA bookings with the PMS
Thanks to the deep integration with hotel systems, Onsai can access all important guest information and answer in real time.
Yes! Onsai can take new bookings - directly via your PMS and across all channels.
Our AI phone agent and our AI chat agent guide the caller through the process in a natural conversation, checking availability and prices in real time and booking the reservation - from the phone directly into the PMS, no diversions via a booking link necessary.
Personal data will only be transferred to countries outside the European Economic Area (EEA) if these countries provide an adequate level of data protection or if we have implemented appropriate safeguards (e.g., Standard Contractual Clauses). deep integration is the key to success, as it enables Onsai not only to retrieve information, but also to proactively manage processes and make decisions. Thanks to the seamless connection with your Telephone system and your PMS & Booking Engine benefit from:
Telephone system:
PMS & Booking Engine:
The result:
With Onsai, your hotel communication will not only be more efficient, but also more intelligent and customer-orientated.
Onsai supports 25 languages. German and English are included as standard. Other languages are available on request.
The implementation of Onsai is fast and uncomplicated:
Within 10 business days ready to use
Our AI learns your information in the shortest possible time and can process all formats, whether PDF, Word, Excel or photos. In the course of the process we customise your agents precisely to your brand. They learn, just like humans, and get better and better.
Our experts will guide you through the entire process and ensure that Onsai is optimised for your brand.
Yes, Onsai is fully customisable:
Tone of voice & Brand Language - Onsai can communicate formally or casually.
Hotel policies & services - Onsai knows your offers and informs guests correctly.Individual workflows - Customisations for special requirements such as VIP services or special guest enquiries. For example, some numbers can be ‘whitelisted’ and are put through directly to a personal contact.
Like an employee the AI continuously and adapts to the conditions of your hotel.
As individual as your hotel is, the voice of your AI agent can also be customised.
There are 25 different languages to choose from so that you can give your AI agent a individual character .
Yes, Onsai is fully multi-property capable and is ideal for hotel groups with several locations. Our Agentic AI can seamlessly process requests for different hotels in a group while maintaining an overview of all locations.
Advantages of the multi-property functionality:
Thanks to the integration into several PMS systems and telephone systems, Onsai communicate simultaneously with different hotel systemswithout compromising efficiency.
The result:
Onsai makes it easy to create a central, intelligent communication solution for hotel groups - without compromising on service quality.
We offer a personal, German- and English speaking support and are available to you around the clock. Our service includes
24/7 technical support for emergencies. Knock on wood - so far we haven't had any downtimes.
Regular updates & continuous AI training
Dedicated contact persons for individual customisations
Our aim is to constantly evolve Onsai and adapt to your individual needs. Our Customer Success Team will be in regular contact with you after onboarding.
It's very simple! Arrange a free live demo and experience Onsai in action.
📅 Book a demo now - Our team will show you how Onsai can support your hotel.
