Datasets and benchmarks for frontier AI.

Leftcurve Labs builds the dataset generation and benchmarking infrastructure leading AI labs use to measure what their models actually know.

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What we do

Two services. Built for labs that take evaluation seriously.

01

Dataset Generation

Bespoke, expert-verified datasets for training and evaluation across specialized domains. We assemble domain experts, design rigorous annotation pipelines, and deliver datasets calibrated to your model's actual failure modes.

  • Domain-expert authoring and review
  • Adversarial and edge-case coverage
  • Audit trails and provenance for every example
02

AI Benchmarking

Custom benchmarks for your target domain. Public leaderboards are saturated. Ours find what's actually broken in your model and re-run as it improves.

  • Custom evals matched to your product surface
  • Statistical rigor, blind judging, contamination checks
  • Continuous evaluation as models evolve

Who we work with

Trusted by frontier AI labs.

We work quietly with research teams and product groups shipping models into high-stakes domains.

Need proprietary datasets or eval infrastructure?

Tell us what you're building. We'll get back within 24 hours.

Email donn@leftcurvelabs.co