Experts in the loop, where AI alone isn't enough.
Escalation, supervision, and correction — operated by credentialed reviewers, designed for regulated environments, and wired back into your models so quality compounds.
Oversight that scales with you.
Escalation Workflows.
Route low-confidence cases to the right expert in seconds.
Expert Review.
Domain-credentialed reviewers vetted to your standards.
AI Supervision.
Continuous oversight of agents and copilots in production.
Hybrid Human-Agent Systems.
Co-pilots designed for safe handoffs in both directions.
Continuous Learning Loops.
Reviewer signal feeds back into training and evals.
Model Correction Pipelines.
Structured remediation for regressions and drift.
Compliance Review.
Policy-aligned QA with full audit trails.
Regulated Workflows.
Healthcare, finance, legal, and public-sector ready.
An operating model built for regulated AI.
Design.
Map decision boundaries, SLAs, and escalation criteria.
Staff.
Match credentialed reviewers to domain and language.
Operate.
24/7 review queues with adjudication and audit logs.
Improve.
Feed corrections into training, eval, and policy.
Experts in the loop.
How frontier teams put credentialed humans behind every model decision.
Building trustworthy AI: How Sigma ensures reliable AI outputs
For a complex audio description project from a leading global technology company, Sigma's specialized skills in sourcing, vetting, and training annotators were essential to delivering reliable outputs.
Read case studyWhy AI feels like a foreigner: Multimodal localization and the human cultural layer
A leading AI team needed to evaluate model performance across text, audio, and video — and surface subtle cultural failure modes at scale.
Read case studyLaunching and scaling video transcription in 24 languages and dialects
How Sigma stood up and scaled a multilingual video transcription operation across 24 languages and dialects — with native experts driving quality at every step.
Read case studyHow a big tech company is cracking the nuances of human voice with Sigma's skills-based approach
A big tech client partnered with Sigma's skills-based talent network to capture the subtle nuances of human voice that off-the-shelf annotation could never reach.
Read case studyEU and UK secure facilities. ISO 27001, SOC 2 Type II, GDPR, HIPAA-aligned workflows for healthcare clients.
- ISO 27001
- SOC 2 Type II
- GDPR
- EU AI Act Ready