Sigma AI · Trust Infrastructure

Improve AI performance.
Increase Customer satisfaction.

Independent evaluation, high-fidelity data, and human intelligence — for the teams building and deploying AI systems.

Used by frontier labs and AI-native scale-ups.◆Used by frontier labs and AI-native scale-ups.◆Used by frontier labs and AI-native scale-ups.◆Used by frontier labs and AI-native scale-ups.◆Used by frontier labs and AI-native scale-ups.◆Used by frontier labs and AI-native scale-ups.◆Used by frontier labs and AI-native scale-ups.◆Used by frontier labs and AI-native scale-ups.◆

The stack

Sigma brings evaluation
to your stack.

Your agents and models do the work. Sigma is the load-bearing layer underneath — the data, evaluation, and human review that keeps the rest standing.

L3 · Your build

Agentic Layer.

Autonomous agents, tools, and orchestration.

PlannersTool useMemoryMulti-agent

L2 · Your build

LLM Layer.

Foundation models, fine-tunes, and retrieval.

Frontier LLMsFine-tunesRAGEmbeddings

L1 · Sigma

Sigma Trust Infrastructure.

Data, evaluation, human review, governance — the trust layer.

Data foundationsEvaluationHITL opsAdvisory

▲ Load-bearing. Everything above depends on the layer below.

18+

Years building AI data and evaluation

70K+

Vetted human experts on call

700+

Languages and dialects covered

30+

Enterprise clients in production

The problem

AI ships fast. Trust doesn't.

Agents and Models fail in Silence.

Real users, real edge cases, real consequences. Lab benchmarks don't catch them.

Bad data poisons everything downstream.

Fine-tunes only as good as the corpus. Synthetic data needs human calibration.

Compliance is shifting under your feet.

EU AI Act, NIST AI RMF, ISO 42001. Audit trails are no longer optional.

SOLUTIONS

One trust layer. Four solutions.

AI Data Foundations.

Multilingual, multimodal data your model can actually learn from.

Explore AI Data Foundations

Multi-Dimensional Evaluation.

Independent evaluation across CX, observability, and compliance dimensions.

Explore Multi-Dimensional Evaluation

Human-in-the-Loop Operations.

Real expert review and supervision, plugged into your agent stack.

Explore Human-in-the-Loop Operations

AI Solutions & Advisory.

Strategy and architecture for shipping AI you can defend.

Explore AI Solutions & Advisory

Built for

Three audiences. One standard.

For Frontier Labs.

When the model you're training is the next benchmark, the data and evals can't be.

See how we support labs

For Enterprise AI Teams.

You're shipping AI to real customers. We make sure it earns their trust.

See how we support scale-ups

For Regulated Industries.

Healthcare, financial services, legal, public sector. AI here doesn't get a second chance.

See how we support regulated industries

Why Sigma

Independent by design.

We don't build frontier models or Agentic Solutions. So when we evaluate yours, there's no skin in the game we're judging. That neutrality is the difference between a benchmark you can publish and a benchmark you have to explain.

Read the Why Sigma case

Our Clients and Partners

Samsung

Microsoft

Telefonica

Stellantis

Vodafone

AWS

Google