Scale vs Underpin

The agent recruits, you manage talent

SpecialistStreamlines computer vision dataset annotation and model training, but is less suited for general LLM text tasks.

Focuses heavily on enterprise data labeling and training data curation, similar to Scale's core annotation business.

The AI-native ATS that replaces your entire recruiting stack

Provides enterprise multimodal annotation and data management tools, but with less emphasis on managed labeling workforces.

SpecialistTrack, evaluate, and ship AI models and agents in one connected environment.

SpecialistFocuses on post-deployment LLM observability and evaluation rather than training data generation or annotation.

Specializes in data infrastructure and annotation specifically tailored for computer vision and physical AI workloads.

An AI recruiter that interviews, verifies, and screens every applicant

Free / Open-sourceOffers a flexible open-source alternative for custom data labeling and human-in-the-loop annotation pipelines.

Automated job applications and referral outreach in one click

SpecialistBuild, simulate, evaluate and monitor self-improving AI agents