AI Transparency

Ask Viet is an AI system

Ask Viet is an interactive AI assistant, not Viet Anh Nguyen. It answers in a conversational voice, but its responses are generated automatically and may be incomplete, incorrect, or outdated. Do not rely on it for medical, legal, financial, or other high-stakes decisions.

The interface identifies the assistant as AI before the first question and throughout the conversation. AI-generated responses are also marked in the page markup.

Purpose and scope

Ask Viet helps visitors find information about Viet Anh's public work, writing, projects, courses, and books. It is instructed to stay within that scope and to link to relevant source pages when possible.

It is not designed for employment screening, credit decisions, education admissions, biometric categorisation, emotion recognition, law enforcement, or other high-risk uses.

How answers are generated

1. Your question is sent to an Upstash Vector index to retrieve relevant excerpts from public content on vietanh.dev.
2. The question, recent conversation context, and retrieved excerpts are sent through Vercel AI Gateway to the configured language model. The default model is Google Gemini 2.5 Flash Lite, but the configured model may change.
3. The model generates a response using those sources and the assistant's system instructions.

Retrieval improves grounding but does not guarantee accuracy. Follow the cited source links and verify important information yourself.

Data recorded

For security, quality review, abuse prevention, and improving the assistant, the site records each completed chat turn. The record can include:

• Your question and the generated answer
• A conversation identifier and turn number
• The model used, token counts, completion status, and response latency
• Titles, URLs, types, and relevance scores for retrieved sources
• Automated quality or security tags
• A salted, truncated hash derived from the client IP address, not the raw address
• A truncated browser user-agent and derived browser, operating-system, and device categories

Do not submit secrets, confidential business information, sensitive personal data, or information about another person.

Storage, retention, and deletion

Chat records are stored in the site's Postgres database and may be reviewed by Viet Anh to improve the assistant and investigate misuse. The site does not currently apply an automatic deletion schedule or provide a self-service chat-history account.

You can request access to or deletion of a chat record through the contact page. Include the approximate date and time, the question, and any other detail needed to locate the conversation. A request may not be fulfillable if the record cannot be reliably identified from the information provided.

Human oversight and contact

Viet Anh maintains the retrieval content, system instructions, security tests, and administrative review tools. The assistant cannot modify the site, send messages, make decisions about people, or act on Viet Anh's behalf.

Questions, complaints, and correction or deletion requests can be submitted through the contact page.

This page describes the deployed system as of August 15, 2026. It is a transparency notice, not a certification of legal compliance.