# Multilingual chatbot for your website URL: https://instantknowledgebot.com/solutions/multilingual-website-chatbot Last updated: 2026-10-14 > A multilingual chatbot answers each website visitor in the language they write in, so one knowledge base can serve customers who speak Spanish, French, Hindi, Arabic and many other languages. InstantKnowledgeBot bots do this automatically: you upload documents in one language and the bot replies in the visitor's language, grounded in that same content. A **multilingual chatbot** lets every visitor ask questions in their own language and get an answer in that language. With InstantKnowledgeBot you don't need a translated knowledge base: upload your documents once, in the language you have them in, and the bot replies in Spanish to Spanish questions, in Hindi to Hindi questions, and so on, still answering only from your content. ## How does a multilingual chatbot work without translated documents? Modern large language models understand and write many languages. When a visitor writes in Portuguese, the model understands the question, finds the relevant parts of your English documents, and writes the answer in Portuguese. InstantKnowledgeBot instructs every bot to **answer in the language the visitor writes in**, and to answer **only from your knowledge base**. That means: - **One knowledge base** to maintain, not one per language. - **Consistent answers** across languages, because they all come from the same source. - **No language settings** for visitors to find. They just type. ## Who needs a multilingual website chatbot? - **Hotels, restaurants and tourism** serving international visitors. See the [hotel chatbot](/solutions/ai-chatbot-for-hotels). - **Online stores** selling across borders without translated policies. See the [Shopify AI chatbot](/solutions/ecommerce-shopify-chatbot). - **Clinics and local services** in communities where many residents prefer another language. - **SaaS and education** companies with global users and students. - **Internal teams** with staff who are more comfortable in their first language. ## Which languages work best? The bot uses the underlying model's language abilities: hosted bots run on Anthropic's Claude, and with your own API key you can choose Claude, OpenAI's ChatGPT models, Google's Gemini or xAI's Grok. These models handle widely used languages such as Spanish, French, German, Portuguese, Italian, Hindi, Arabic, Chinese and Japanese well. Quality can vary for less common languages, so **test the languages your customers actually use** before relying on them. ## How do you set up a multilingual chatbot? 1. [Create a free account](/signup) and a new bot. 2. Upload your documents in their existing language. 3. Write a **welcome message** that signals languages, for example "Hi! Ask me anything, in any language. ¡Pregúntame en español!" 4. Optionally add **extra instructions**, such as "Always keep product names and plan names in English" or "Use formal 'usted' in Spanish". 5. **Test** in the **Test** tab by asking the same question in several languages and comparing the answers to your documents. 6. Embed it on your site. One snippet serves every language. ## What should you check when testing other languages? - **Facts match the source:** prices, timeframes and policies should be identical in every language. - **Names stay correct:** product names, brand names and addresses shouldn't be translated unless you want them to be. - **Legal and medical wording:** for sensitive content, have a fluent speaker review a sample of answers. - **Fallback behaviour:** ask something not in your documents in another language and check the bot says it doesn't know, in that language. Your fallback message is shown as you wrote it, so consider writing it in more than one language. ## Should you upload documents in several languages? Usually not necessary. Upload translated documents only if you already maintain official translations, for example legally reviewed terms, or if exact wording in a language matters. Mixing languages in the knowledge base works, but keep the facts identical across versions so the bot never sees two different answers. See [preparing documents for an AI chatbot](/learn/preparing-documents-for-ai-chatbot). ## How do you see which languages visitors use? Read conversations in the **Conversations** tab to see the questions in the language they were asked. Top questions and knowledge gaps help you spot missing information whatever the language. ## What does a multilingual answer look like? Suppose your returns policy is in English and says items can be returned within 30 days, with free return labels in the US. A visitor writes in Spanish: > **Visitante:** ¿Puedo devolver un producto después de tres semanas? > > **Bot:** Sí. Puedes devolver productos dentro de los 30 días posteriores a la entrega, y en EE. UU. la etiqueta de devolución es gratuita. The bot understood the question, found the English policy and answered in Spanish with the same facts. Another visitor asking in French or Hindi gets the same policy in their language. ## When should you still translate content? A chatbot complements translation; it doesn't replace it everywhere. Keep professionally translated content for: - **Legal terms and contracts**, where exact wording matters. - **Safety and medical information**, where a mistranslation could cause harm. - **Marketing pages** that need to rank in search in other languages. For everyday questions (opening hours, shipping times, how to book), answers generated in the visitor's language from your source documents are usually all you need. ## How should you write the fallback message for several languages? The fallback message is shown exactly as you write it, so a single-language message may not match the visitor's language. A short bilingual or trilingual fallback works well, for example: "Sorry, I don't have that information. Email help@yourcompany.com. / Lo siento, no tengo esa información. Escríbenos a help@yourcompany.com." Keep it brief and include a contact method that works for everyone. ## Does language affect price? No. A visitor's question answered by hosted AI counts as one message in any language. With your own AI key, messages aren't capped by us; your provider bills its usage, and some languages use more tokens than others for the same text. Compare plans on the [pricing page](/pricing). For a broader view of support use cases, see [AI customer support chatbot](/solutions/customer-support-chatbot), or read [what a knowledge base chatbot is](/learn/what-is-a-knowledge-base-chatbot). ## Frequently asked questions **Do I need to translate my documents for a multilingual chatbot?** No. Upload your documents in the language you have them in. The bot reads them and replies in the language the visitor writes in. **Which languages does it support?** It replies in the visitor's language using the underlying AI model (hosted Claude or the model you choose with your own key). Major languages work well; quality can vary for less common ones, so test the languages your customers use. **Can I set the welcome message in another language?** Yes. The welcome message and starter questions are plain text you write, in any language. Some businesses write a bilingual welcome message. **Are names and policy terms translated correctly?** Usually, but check terms that matter, such as product names or legal wording. If a term must stay untranslated, add an extra instruction like Always keep product names in English. **Does a multilingual chatbot cost more?** No. Language doesn't change the price. Each answered question counts as one message whatever the language.