Skip to content
Synthium Labs
Synthium Labs
Expert human infrastructure for AI

The expert human layer behind frontier AI.

We build and operate calibrated teams of engineers, researchers, and domain experts for model evaluation, post-training, and agent testing.

Model evaluationPost-training dataAgent testingRed teaming

Synthium Agents · live evaluation

  1. Agent
  2. Task
  3. Execution
  4. Expert Eval
  5. Score
  6. Failure Analysis
CorrectnessTool useArchitectureTask completion

Built for frontier AI teams

  • OpenAI
  • Anthropic
  • Google DeepMind
  • Mistral
  • Meta AI
  • Perplexity
  • Cursor
  • Cohere
  • Hugging Face
  • NVIDIA

01The problem

The harder AI gets, the harder it is to evaluate.

Advanced systems require people who can actually judge code, reasoning, research, domain knowledge, safety, and real-world task completion. Generic annotation isn't enough.

03Flagship

AI agents need expert evaluators.

Coding and AI agents can't be reliably evaluated by generic annotators. Synthium provides calibrated software engineers and technical experts to assess what agents actually do.

  • Code generation
  • Debugging
  • Repository-level reasoning
  • Tool use
  • Task completion
  • Architecture
  • Security
  • Failure modes

04Why Synthium

Quality arbitrage, not labour arbitrage.

We sell expert judgment, calibrated quality, and managed expert capacity — not cheap human labor.

Expertise

We source people who can actually do the work — engineers, researchers, and domain specialists.

Calibration

Experts are trained and validated against your project-specific standards before producing anything.

Quality

Multi-level review, adjudication, and continuous contributor measurement keep the bar steady.

Scale

Expand qualified capacity on demand without lowering the quality bar.

Commodity annotation
Synthium
Commodity labels
Expert judgment
Generalist workforce
Specialist experts
Volume-first
Quality-first
Generic guidelines
Project-specific calibration

05Expertise

Expertise where the hard problems live.

Built from India's deepest technical talent pools — engineers, researchers, competitive programmers, doctors, lawyers, finance professionals, and multilingual experts.

  • ENGINEERING
  • MATHEMATICS
  • SCIENCE
  • FINANCE
  • LEGAL
  • MEDICAL
  • LANGUAGES
  • RESEARCH

06How it works

Your quality bar becomes our production standard.

A repeatable operating model, visualized — the detail lives on How We Work and Quality.

  1. Define
  2. Source
  3. Screen
  4. Calibrate
  5. Produce
  6. Verify
  7. Scale

07Proof

We'd rather show you than claim.

We don't publish customer names or invent metrics. Credibility comes from methodology, transparency, and a pilot you can inspect.

  • Methodology over marketing

    Every engagement is scoped, calibrated, and measured against a defined quality bar.

  • A quality system you can audit

    Gold tasks, reviewer agreement, adjudication, and rework — explained openly on our Quality page.

  • Pilot before commitment

    Start small. We help you scope the expert profile, task design, and acceptance criteria up front.

08Research

Researching the frontier of AI evaluation.

Benchmark reports, human-vs-LLM-as-a-judge studies, expert calibration research, and coding-agent failure analysis. We're building authority, not just capacity.

09Get started

Have a difficult AI data or evaluation problem?

Start with a focused pilot. We'll help define the expert profile, workflow, calibration standard, and production plan.