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Synthium Labs
Synthium Labs

Research

Researching the frontier of AI evaluation.

Synthium isn't only a delivery partner. The expert layer we operate generates hard-won signal about how frontier models behave under real evaluation — and we work to turn that signal into defensible method. This is where we publish what we learn.

What we study

Focus areas

An early-stage hub. We're open about what we investigate and are building toward — without inventing findings we haven't published.

Benchmark reports

We're building repeatable ways to measure where frontier models actually break — not headline leaderboard scores, but the task-level and domain-level gaps that matter for deployment. Methods and findings are shared in pilots as they mature.

Human vs LLM-as-a-judge

Where does automated judging agree with expert human judgment, and where does it quietly fail? We study disagreement patterns, failure modes and when human review is non-negotiable.

Expert calibration research

How do you turn a qualified domain expert into a consistent, measurable evaluator? We investigate calibration, gold-task design and the processes that make expert labels trustworthy at scale.

Coding-agent failure analysis

Coding and AI agents fail in ways generic annotators miss. We analyze the failure modes of agent trajectories — correctness, specification drift, edge cases — and how to evaluate them reliably.

Reasoning evaluation

Beyond final-answer accuracy, we study how to assess multi-step reasoning: where models fabricate, where they shortcut, and how expert graders can separate real competence from plausible output.

Domain-specific evaluation

Legal, medical, financial and scientific evaluation require domain experts who can tell right from wrong. We build toward evaluation frameworks grounded in real professional judgment, not surface fluency.

How we share

Deeper material lives in our pilots

Much of what we learn is tied to client work and unreleased models, so the most detailed methodology, datasets and results are shared under NDA and in active pilots — not on a public blog. If you're building evaluation for a frontier system, you can work directly with our research team on the problems that matter to you.