Annotation is what helps AI make sense of the world.
As an annotator, you may be invited to take part in online projects such as rating AI-generated content, evaluating factual accuracy, or comparing responses — when projects are available.
Carefully review provided data (text, images, or videos)
Label or classify content based on project guidelines
Identify and flag factually incorrect, sensitive, inappropriate, or unclear material
Important note: This is project-based work. Tasks are available only when projects are active. You may be invited to one or more projects depending on your profile and current opportunities.

Currently studying at a university or holding a completed Bachelor’s, Master’s, or PhD degree in any professional field.
Proficient in Portuguese (C2) and advanced in English (C1 or higher), both written and spoken.
Logical thinking, fact-checking and reasoning abilities
Strong attention to detail and ability to understand and follow complex instructions
Strong communication skills, including the ability to ask clarifying questions when needed
Genuine interest in technology and artificial intelligence

Get paid for your expertise, with rates that can go up to $23/hour depending on your skills, experience, and project needs.
Take part in a part-time, remote, freelance project that fits around your primary professional or academic commitments.
Work on advanced AI projects and gain valuable experience that enhances your portfolio.
Influence how future AI models understand and communicate in your field of expertise.

AI Trainer – Freelance Annotator, Portuguese

Key skills