Unreasonable Labs
Builds a discovery engine that pairs language models with a map of relationships and neurosymbolic mathematical abstractions, to propose and test hypotheses across chemistry, materials science and biology.
Money and evidence
Latest round, Round (unnamed), 2026-03-10: the record then held no research entry for the company. The first research entry is dated 2026-05-27; the highest level so far is 2 (Computed).
Rounds and research, on one timeline
- 2026-05-28Research
Level 2 · Computed
Unreasonable Labs' ProjectionBench asks models to predict a recent paper's results from its research question alone, then with more detail; GPT-5.4 scores highest
Most science benchmarks test what a model already knows; this one asks it to anticipate a result it cannot have read, by using papers newer than its training data. It also shows which context helps most: adding the null hypothesis raised scores more than adding the experimental procedure did.
- 2026-05-27Research
Level 2 · Computed
Unreasonable Labs' LEIA predicts how 3D lattice materials deform and where stress builds as loads are applied step by step, checked only against simulation
It is the first result on the record from a company that says its engine proposes and tests hypotheses, and every test here is against the authors' own finite-element runs: nothing was built or loaded. The authors say it covers only cubic lattice plates under four kinds of load, and the benchmark is their own.
- 2026-03-10Round (unnamed)Round
$13.5M
For: scale its core technology: language models paired with a relationship map and neurosymbolic abstractions
Models and platform
The company's release, dated 2026-03-10, says it launched from stealth with this round; it does not name a stage. Pulse 2.0 (2026-03-11) adds that it plans to grow its engineering and science staff and has pilots in energy transition, materials science and pharmaceutical development; those pilots are its account, with no partner named.
Lead · Playground GlobalAIX VenturesE14 FundMS&AD Ventures
On the deal: Sasha Ostojic (Venture Partner, Playground Global)
Announced by the company · unreasonablelabs.ai ↗On the timeline →
Research entries are the timeline's graded entries that name this company. A level grades one claim, not the company, and a blank can mean the record has not caught up rather than that nothing was published.