Welcome to the future! With Onsai's Agentic AI, you'll never miss a call again - our AI answers, books and makes decisions independently, around the clock. Increase efficiency, reduce costs and delight your guests with seamless, personalised communication.
More than 60% of calls handled automatically - keep your team concentrated on the essentials.
Save on personnel costs without compromising service.
Immediate answers, personalized service - at any time of day or night.
Reduce human errors in bookings and billing with AI-supported processes
Our AI is based on secure open source technology, is 100% GDPR-compliant and can optionally be operated on-premise - for maximum data sovereignty.
Onsai enables a central hotline for hotel groups, automatically recognises the correct location and ensures consistent guest communication across all locations.
Deep integration into the telephone system, PMS, CRM and IBE or CRS means that AI agents can not only retrieve information, but also proactively control processes, make decisions and thus optimise operational processes and personalise guest communication.
With Onsai, bookings are made without any detours - directly on the phone. Thanks to the deep PMS integration, our AI can create reservations in real time, without any redirects or additional links. Fast, seamless and efficient for guests and hotels.
Onsai can be fully customised to your hotel brand - from the voice and approach to the tone of voice and the desired creativity in communication. Multilingual interactions are also customised to offer guests worldwide a unique, brand-compliant experience.
Onsai is based on secure open source models and uses state-of-the-art Agentic AI for dynamic, context-based communication - 24/7, in over 140 languages and on unlimited lines simultaneously.
With Onsai, setting up your phone bot is child's play. Information is automatically scraped from your website. Fine adjustments and changes can be made and activated at any time in the self-administration.
Scrap your website for a quick start.
Fine-tuning of the voice, pronunciation and speech.
Simple updates and tests with immediate implementation.
Our AI processes everything - whether Word, PDF, Excel or photos.
Onsai stands for the highest safety standards. Our own developed AI platform is GDPR compliant and offers the option of local hosting at the customer's premises.
Natural and multilingual communication that impresses guests and takes the pressure off your team.
Your AI-powered chatbot for websites and messaging platforms.
Automated email processing for fast and consistent communication.
The AI reservation check: Checks OTA reservations and changes incorrect bookings or informs the team.
Learn how Onsai can take your guest communication and operational efficiency to the next level. Schedule a demo or learn more about our solutions.
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 hotelsthat goes far beyond simple automation. Instead of just answering enquiries, Onsai acts as an intelligent, autonomous AI agentthat 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.
A 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 more than 140 languages. German and English are included as standard. Other languages are available on request.
It is generally important that the information about the hotel is also available in the desired languages so that the correct results can be generated.
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 more than 20 different voices to choose from so that you can give your AI agent a individual character .
🤩 Bonus: You have the possibility to choose several voices so that the agents take turns answering the phone.
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:
🔗 Deep integration for hotel groups:
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.
Onsai is revolutionizing hotel communication with AI and voice control. Our name, derived from the Japanese “onsei” (voice), reflects our mission. Our team combines decades of hotel experience with AI expertise. Together, we are bringing AI and voice control into the hearts of hotels.
Harvard graduate, Ex-Google Developer Expert for Voice AI
Expert for hotel tech integration
Award-winning hotel management professional
Experienced hotel technology strategist
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