Everything You Need to Know About Felo AI
Felo AI is a multilingual AI search engine that combines real-time web search with integrated translation and AI-powered summarization. Since its rise in popularity — particularly in Japan, Korea, and among international research professionals — users have had a growing list of questions about its capabilities, limitations, and technical details.
This FAQ compiles the most commonly asked questions about Felo AI, organized by category. Whether you’re evaluating the platform for the first time or looking to get more from your existing subscription, you’ll find detailed answers here.
Supported Languages
How many languages does Felo AI support?
Felo AI supports 30+ languages for both search and translation. This includes major world languages and several regional languages with significant online content.
Which languages are supported?
The core supported languages include:
| Language Group | Languages |
|---|---|
| East Asian | Japanese (日本語), Korean (한국어), Chinese Simplified (简体中文), Chinese Traditional (繁體中文) |
| European (Western) | English, French, German, Spanish, Portuguese, Italian, Dutch |
| European (Nordic) | Swedish, Norwegian, Danish, Finnish |
| European (Eastern) | Russian, Polish, Czech, Romanian, Hungarian, Ukrainian |
| Southeast Asian | Vietnamese, Thai, Indonesian, Malay |
| South Asian | Hindi |
| Middle Eastern | Arabic, Turkish, Hebrew |
| Other | Greek |
Which languages work best?
Felo AI’s performance varies by language, with the strongest results for:
- Tier 1 (Excellent): English, Japanese, Korean, Chinese (Simplified & Traditional), German, French, Spanish
- Tier 2 (Very Good): Portuguese, Italian, Russian, Dutch, Vietnamese, Thai, Indonesian
- Tier 3 (Good): Arabic, Turkish, Polish, Czech, Swedish, Norwegian, Danish, Finnish, Hindi
The tier classification reflects both translation quality and search retrieval depth — Tier 1 languages have more comprehensive web index coverage and higher translation accuracy.
Can I search in one language and get results in another?
Yes — this is Felo AI’s core capability. You can write your query in any supported language and specify your preferred output language. Felo AI will search across all relevant language sources and present results in your chosen language.
For example:
- Query in English → Results synthesized from Japanese, Korean, and English sources → Output in English
- Query in Korean → Results from English, Chinese, and Korean sources → Output in Korean
Does Felo AI handle mixed-language queries?
Yes. Felo AI can process queries that mix languages, which is common in professional contexts. A query like “Samsung 半導体 2026 전망” (mixing English, Japanese kanji, and Korean) will be understood and processed correctly.
Are there plans to add more languages?
Felo AI has been steadily expanding its language support. Languages frequently requested by users include Bengali, Swahili, Tagalog, and Farsi. The team has indicated that language expansion is an ongoing priority, with new languages typically added on a quarterly basis.
Search Depth and Quality
How does Felo AI’s search work?
Felo AI’s search operates in several stages:
- Query analysis: Your question is parsed for intent, entities, and language requirements
- Multilingual query expansion: The query is adapted for each target language, accounting for terminology and phrasing differences
- Cross-language retrieval: The search engine queries web indexes in multiple languages simultaneously
- Relevance ranking: Results from all languages are ranked by relevance using neural models
- Translation and synthesis: Top results are translated and synthesized into a coherent answer
How many sources does Felo AI check per query?
A typical query retrieves and evaluates 15-30 sources across multiple languages. The Pro plan generally retrieves more sources per query than the Free plan. The number also depends on the specificity of the query and the availability of relevant content.
Does Felo AI search the live web or use a cached index?
Felo AI searches the live web in real time. This means results reflect current information, including content published within the last few hours. However, like any search engine, there may be a slight delay between a page being published and being indexed.
Can Felo AI access paywalled content?
No. Felo AI respects publisher paywalls and access restrictions. If a source is behind a paywall, Felo AI can typically access the article’s title, metadata, and any freely available preview text, but not the full paywalled content. The citation will still link to the original source.
Does Felo AI search academic papers?
Felo AI can discover academic papers through its web search, including content from:
- Google Scholar indexed pages
- arXiv preprints
- PubMed abstracts
- University repository pages
- Open-access journals
However, Felo AI is not a dedicated academic search engine. For comprehensive academic literature reviews, it should be supplemented with tools like Google Scholar, Semantic Scholar, or discipline-specific databases.
How current are Felo AI’s search results?
Real-time search means results can include content published within the last few hours. For rapidly developing stories, Felo AI can surface breaking news from foreign-language media that hasn’t yet been picked up by English-language outlets.
Translation Accuracy
How accurate is Felo AI’s translation?
Translation accuracy varies by language pair and domain, but general benchmarks are:
- Tier 1 language pairs (e.g., Japanese ↔ English, Korean ↔ English): 85-95% accuracy for informational content
- Tier 2 language pairs (e.g., Vietnamese ↔ English, Thai ↔ English): 75-90% accuracy
- Tier 3 language pairs: 70-85% accuracy
These are approximate ranges for general informational content. Domain-specific content (legal, medical, financial) may have different accuracy characteristics.
How does Felo AI’s translation compare to DeepL and Google Translate?
| Aspect | Felo AI | DeepL | Google Translate |
|---|---|---|---|
| Overall accuracy | Very Good | Excellent | Good |
| Natural phrasing | Good | Excellent | Adequate |
| Technical terminology | Good (context-aware) | Very Good (with glossary) | Adequate |
| CJK languages | Very Good | Very Good | Good |
| Low-resource languages | Adequate | Limited coverage | Good coverage |
| Contextual understanding | Very Good (query context) | Good (document context) | Limited |
| Speed | Fast (integrated) | Fast | Fast |
| Integration with search | Native | None | Basic (Chrome) |
Felo AI’s translation advantage isn’t raw accuracy — DeepL generally wins on pure translation quality. Rather, it’s the integration of translation with search and summarization that creates the value proposition.
Does Felo AI preserve original text alongside translations?
Yes. When you click through to a cited source, Felo AI provides the option to view both the translated text and the original language text side by side. This is essential for:
- Verifying translation accuracy for critical information
- Understanding nuances that may be lost in translation
- Sharing original sources with colleagues who read the source language
Can I correct or improve translations?
Currently, Felo AI does not offer a user feedback mechanism for translation corrections (unlike DeepL’s suggestion feature). However, you can ask follow-up questions to clarify specific terms or request alternative translations.
How does Felo AI handle technical and domain-specific terminology?
Felo AI uses context-aware translation that leverages the search query to inform terminology choices. If your query is about financial markets, the translation engine prioritizes financial terminology. If it’s about semiconductor manufacturing, technical terms are translated using industry-standard equivalents.
This approach works well for common technical domains but may struggle with highly specialized or emerging terminology that hasn’t been well-represented in training data.
AI Summarization
How does Felo AI summarize cross-language sources?
Felo AI uses large language models to synthesize information from multiple sources across languages into a coherent answer. The process:
- Relevant passages are extracted from each source (in their original languages)
- Passages are translated and aligned semantically
- The LLM synthesizes a unified answer, resolving contradictions and weighting source authority
- Citations are attached to specific claims
Can I control the length or detail of summaries?
You can influence summary depth through your query phrasing:
- Brief: “Quick summary of…” or “In brief, what…”
- Detailed: “Provide a detailed analysis of…” or “Comprehensively explain…”
- Structured: “Compare and contrast…” or “List the key factors…”
Does Felo AI hallucinate or fabricate information?
Like all LLM-based tools, Felo AI can occasionally generate inaccurate information. However, its search-grounded approach significantly reduces hallucination risk compared to pure LLM tools:
- Every claim is tied to a retrieved source
- Users can verify claims by clicking through to original sources
- The system is designed to acknowledge uncertainty rather than fabricate answers
That said, critical research should always include source verification, particularly for high-stakes decisions.
API Access
Does Felo AI offer API access?
Felo AI offers limited API access as of early 2026, primarily for enterprise customers and approved developers. The API is not yet as mature or widely available as alternatives like Perplexity’s pplx-api or OpenAI’s API.
What can the API do?
The available API endpoints typically include:
- Search endpoint: Submit queries and receive structured results with translations
- Translation endpoint: Translate text with Felo AI’s context-aware translation
- Languages endpoint: Retrieve supported language list and status
How do I get API access?
API access is generally available through:
- Enterprise plans: Contact Felo AI’s sales team for enterprise API access
- Developer program: Check felo.ai for developer program availability
- Beta access: Felo AI occasionally opens beta API access to interested developers
What are the API rate limits and pricing?
API pricing and rate limits are typically negotiated as part of enterprise agreements. Public documentation for API pricing is limited — contact Felo AI directly for current rates.
Privacy and Data Security
Does Felo AI store my search queries?
Felo AI’s privacy policy covers data retention practices. Generally:
- Search queries are processed to deliver results and may be retained for service improvement
- Pro plan users typically have more control over data retention settings
- Felo AI does not sell personal data to third parties
Is my research data shared with third parties?
Felo AI processes queries through its own infrastructure and underlying AI model providers. Like most AI services, queries may be processed by third-party LLM providers under data processing agreements. Check Felo AI’s current privacy policy for specifics.
Can I use Felo AI for confidential research?
For sensitive or confidential research, consider:
- Reviewing Felo AI’s current privacy policy and terms of service
- Using enterprise plans that may offer enhanced data protection
- Avoiding including proprietary information in search queries
- Using Felo AI for discovery (finding sources) and reading sources directly for sensitive analysis
Is Felo AI GDPR compliant?
As a tool used by European researchers, GDPR compliance is relevant. Check Felo AI’s privacy policy for current GDPR compliance status and data processing details.
Platform and Technical Questions
What platforms is Felo AI available on?
- Web: Full-featured browser interface at felo.ai
- iOS: Mobile app available on the App Store
- Android: Mobile app available on Google Play
- Browser extensions: Check Felo AI’s website for current browser extension availability
Does Felo AI work offline?
No. Felo AI requires an internet connection for all functionality, as it performs real-time web search and cloud-based AI processing.
Can I use Felo AI in a team setting?
Team features are available through Pro and enterprise plans, including:
- Shared research sessions
- Team billing
- Collaborative features (varies by plan)
How does Felo AI handle query ambiguity?
When a query is ambiguous, Felo AI typically:
- Interprets the most likely intended meaning based on context
- May ask clarifying questions for highly ambiguous queries
- Provides results covering multiple interpretations when appropriate
What AI models power Felo AI?
Felo AI uses a combination of proprietary and third-party large language models. The specific models may vary between Free and Pro tiers, with Pro users typically having access to more capable models. Felo AI does not publicly disclose all model details.
Comparison and Alternatives
How does Felo AI compare to Perplexity AI?
Felo AI excels at cross-language research with systematic multilingual retrieval. Perplexity AI excels at English-language deep research with superior reasoning and citation. They serve different primary use cases and are complementary rather than directly competitive. See our detailed Felo AI vs. Perplexity AI comparison for more.
Is Felo AI better than Google Translate?
Felo AI and Google Translate solve different problems. Google Translate is a pure translation tool supporting 130+ languages. Felo AI is a multilingual search and research platform. For pure translation, Google Translate has broader language coverage. For cross-language research, Felo AI is categorically superior.
Can Felo AI replace DeepL?
For quick research translations integrated with search, Felo AI is more efficient. For high-stakes document translation requiring maximum accuracy and formatting preservation, DeepL remains the better choice. Most professionals use both tools for different purposes.
Getting Started
How do I sign up?
Visit felo.ai and create a free account. No credit card is required for the Free plan.
How do I switch between languages?
In the Felo AI interface, you can set your preferred output language in the settings. You can also specify the output language directly in your query (e.g., “Answer in Japanese: What are the latest EU regulations on AI?”).
Where can I get help?
- Documentation: Available on the Felo AI website
- Community forums: Check for user community resources on the website
- Support: Free users have access to community support; Pro users get priority support
- Social media: Felo AI maintains presence on Twitter/X and other platforms
References
- Felo AI Official Website: https://felo.ai
- Perplexity AI: https://www.perplexity.ai
- DeepL: https://www.deepl.com
- Google Translate: https://translate.google.com
- “AI Search Engine Comparison 2026,” Tom’s Guide: https://www.tomsguide.com/
- “Machine Translation State of the Art,” Association for Machine Translation in the Americas: https://amtaweb.org/
- “Web Content Language Statistics,” W3Techs: https://w3techs.com/technologies/overview/content_language