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For annotators and delivery teamsa free platform
Courses on Learncourses, practice and feedback
1,200+ jobslisted on Learn, refreshed regularly
00:00 UTC

Accelerate yourcareer inhuman data.

Data Gradient is a free platform for annotators to get trained on the latest techniques to improve AI capabilities.

Models our annotators have trained:
OpenAIAnthropicMicrosoftNVIDIAMetaxAIDeepMindOpenAIAnthropicMicrosoftNVIDIAMetaxAIDeepMind
Your recordPortable · verifiable

A record of what you can actually do

Each skill has a threshold. Clearing it goes on your record. It belongs to you and not to a company. Take it to the next project, the next human data company, the next lab.

AR

A. Rivera

ES / EN · Mexico · Member since 2025
L2 · Verified
Preference rankingVerified · 94.2
SFT response writingVerified · 89.1
Multimodal annotationVerified · 84.6
DG-4F81-A2C9 · 418 tasks graded● Verified 3 days ago
0Annotators trained
0Median time to first course
0Countries represented
0Practice tasks graded
0Jobs listed, refreshed regularly
01  Where our annotators workOn Learn

Our people have trained state of the art

The most lucrative opportunities in AI training come from highly complex, frontier campaigns that have rigorous requirements.

02  The workflowSix steps on Learn

You can go from low experience to getting the job of your dreams.

We train you and point you to opportunities. We offer a job board of 1,200+ opportunities.

Choose a course

Start by selecting the course you want to work through. You can focus on one course at a time and return to others whenever you want.

Step 1

  • Pick your starting pointChoose the course that matches what you want to learn right now.
  • Review what is availableOpen the course to see its lessons, activities, and checks.
  • Change later if neededYour progress is tracked. You can switch focus without losing completed work.
03  The credentialVerified work

Verified work

Every level is earned through graded work on real task types, and each one is recorded on your profile.

L1 · Trained

Completed the coursework

Signals: you understand the workflow

You’ve finished the lessons and knowledge checks for a task type. This is a starting point and not a qualification. It doesn’t open any work on its own.

L2 · Verified

Passed the practice review

Signals: your practice output meets the rubric

Your scored practice work is reviewed against a client’s rubric. This level does not currently unlock automatic project visibility or matching.

L3 · Reviewer (planned)

Review production work

Signals: your judgment meets the standard

Reviewer access is a planned credential level and is not currently available. It will let annotators review work and help calibrate rubrics once launched.

L4 · Author (planned)

Teach others

Signals: you create the course

Course-author access is a planned credential level and is not currently available. It will let contributors create Data Gradient courses once launched.

04  Skill tracksHover to exploreTap to explore

Crowd to specialized work

We provide specific training to help you land the career of your dreams.

/01

Preference ranking & RLHF

High demand

Compare model responses against a rubric, justify the ranking, and handle multi-turn conversations where quality is contested rather than obvious.

~14 hrs of courseworkNo prerequisitesAny language
/02

SFT response writing

High demand

Write the reference answer a model should have given. Strong writing matters more than technical background. This is the track most people underestimate.

~20 hrs of courseworkWriting sampleDomain variants
/03

Multimodal annotation

Steady demand

Image, video, and audio labeling with structured schemas: bounding, segmentation, action and affordance tagging, and temporal consistency.

~16 hrs of courseworkNo prerequisitesTool-based
/04

Adversarial red-teaming

Planned

Probe models for failures, document reproducible attacks, and rate severity. This track is planned and not currently available.

PlannedNot currently available
/05

Code trajectory review

Planned

Grade agent runs, diffs, and repair traces. This track is planned and not currently available.

PlannedNot currently available
/06

Expert domain review

Selective

Medicine, law, finance, and science. Credential verification required, and market pay reflects the scarcity of qualified reviewers.

~12 hrs of courseworkLicense verifiedInvitation
05  AnnotatorsFrom our course participants

From our course participants

Data Gradient’s training made the data annotation process clear and practical. The real examples and guided exercises helped me sharpen my attention to detail and understand how annotation works in real AI workflows. The skills I gained directly helped me complete an assignment and secure a role as an Advanced Data Annotator at a stealth AI company.
Data AnnotatorEarly-stage AI StartupData Gradient learner
A single workshop with Data Gradient completely changed how I approach unstructured data. I learned how to produce clean, semantically structured outputs that AI models can actually use. Those skills directly helped me land a role at an AI automation startup.
Human DataAI Automation StartupData Gradient learner
Data Gradient’s training transformed my understanding of annotation. What once seemed simple became a structured discipline with clear standards, edge-case reasoning, and QA practices. Shortly after completing the training, I received an interview, and the skills I learned were exactly what interviewers asked about.
Quality AnalystAI Product CompanyData Gradient learner
The training was thorough, practical, and easy to follow. Working through real examples and annotating together as a group helped me quickly improve my approach. The hands-on experience prepared me well for real assignments, and I’d recommend this training to anyone looking to build strong, practical data skills.
Data AnnotatorFrontier LabData Gradient learner
Every platform I’d used before just told me my score dropped. This one told me which part of the rubric I was missing and gave me twenty tasks on exactly that.
Human Data ContributorGlobal AI PlatformData Gradient learner
Being able to show a client an actual acceptance rate instead of saying “trust me, I’ve done this” is the whole difference. I stopped competing on price.
Independent ReviewerAI Data ProgramsData Gradient learner
06  Questions07 entries

The things annotators
ask first.

No. Training, practice, and qualification are free, and they stay free. Clients pay for courses built on their guidelines. You are not the customer, and we don't sell your data.

Data Gradient doesn't pay you. Learn does list more than 1,200 jobs, imported from the public careers pages of human data companies and marketplaces and refreshed regularly. You can learn the skills and find your next opportunity in the same place. Contracts and pay are between you and the client or vendor. We don't take a cut of your rate.

Not for most tracks. Preference ranking and multimodal annotation have no prerequisites, and SFT writing needs only a writing sample. You can start right away. Code review (planned) needs programming experience and expert domain review needs a verifiable credential, because the work genuinely requires them.

Median time to finish a first course is 11 days at a few hours a day. There's no deadline and no penalty for taking longer.

You retake it. Failing isn't recorded as a mark against you.

Yes. The credential is yours. It's portable between projects, agencies, and labs, and anyone you share it with can verify it. If you stop using Data Gradient, you keep it.

A computer with a stable connection and a modern browser. Everything runs in the browser. That includes the practice tasks. Some multimodal and audio tracks recommend headphones and a larger screen.

Free for annotators · 1,200+ jobs on Learn

Start yourfirst lesson.

Training is free, the practice is real work, and the credential is yours to keep.