Brazilian Portuguese Voice AI Evaluator

About OpenTrain

OpenTrain AI is the hiring and contracting organization for this role. OpenTrain is the #1 platform for finding and building careers in AI training and data labeling, helping contributors discover projects, build a professional profile, and apply in minutes.

Creating an OpenTrain account is free. Your work can help you develop a credible portfolio in a rapidly growing field where human contributors directly shape how modern AI systems behave.

About AI Training Work

AI training is the human side of building artificial intelligence. Contributors record audio, transcribe speech, evaluate model responses, and organize high-quality examples that help AI assistants understand and respond more effectively.

This work is remote and often flexible, making it possible to contribute from anywhere with the required equipment and internet access. It is also an opportunity to work directly with cutting-edge AI systems.

The Role

OpenTrain AI is recruiting a Brazilian Portuguese Voice AI Evaluator to capture and assess natural voice interactions with an AI assistant. Using a specialized application on your own Apple Silicon Mac, you will complete everyday tasks by voice, record spoken queries, produce accurate and cleaned transcripts, rate AI responses, and organize task records and supporting recordings for quality review.

This is an entry-level, remote contract project lasting four weeks. The default commitment is about 40 hours per week, with a minimum time requirement of 20+ hours per week. The pay rate is $11.45 per hour.

• Remote four-week contract project
• Pay rate: $11.45 per hour
• Minimum commitment: 20+ hours per week
• Default commitment: approximately 40 hours per week
• Employment type: contractor and part-time

What You'll Do

You will use your voice to interact with an AI assistant across everyday productivity applications. Your work will combine audio recording, transcription, response evaluation, data collection, and structured quality review.

• Compose messages, emails, and notes by voice across everyday applications
• Direct the AI assistant to generate images, format text, apply spreadsheet formulas, and summarize documents
• Record accurate transcripts of spoken queries
• Create cleaned-up versions of transcripts
• Evaluate and rate the AI assistant's responses
• Maintain structured task records with supporting recordings
• Perform careful, independent quality review according to project guidelines

Requirements

You must have native or near-native Brazilian Portuguese proficiency and be comfortable with natural spoken interaction. You must also understand and follow detailed instructions in English and produce accurate, cleaned transcripts.

The role requires regular use of common productivity applications and the ability to perform structured data entry. Careful attention to detail, consistent judgment, and reliable adherence to project guidelines are important for success.

• Native or near-native Brazilian Portuguese proficiency
• Natural spoken interaction ability in Brazilian Portuguese
• Ability to understand and follow detailed instructions in English
• Ability to produce accurate, cleaned transcripts
• Judgment for evaluating AI assistant responses
• Familiarity with email, messaging, documents, spreadsheets, and browsers
• Comfort with structured data entry and self-directed quality review
• An Apple Silicon Mac, such as an M1, M2, or M3 device
• macOS Sequoia 15.0 or newer

Who Should Apply

This opportunity may suit Brazilian Portuguese speakers who are detail-oriented, comfortable working independently, and interested in helping improve voice-based AI. You do not need an advanced technical background, but you should be confident using everyday computer applications and evaluating work consistently against detailed instructions.

• Brazilian Portuguese speakers with natural conversational ability
• People comfortable recording and reviewing spoken language
• Applicants who enjoy structured, quality-focused tasks
• Contributors interested in building experience in AI training and data labeling

How to Build Your AI Training Career

OpenTrain gives freelancers one place to manage AI training opportunities, build a unified portfolio, and show credible experience over time. A stronger profile can help you discover projects that match your skills and grow AI training work into a durable freelance career.

Apply through OpenTrain to take part in the human feedback and data work that helps shape the next generation of AI assistants.