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Open weightsMeta Fundamental AI Research (FAIR)/10 trustMetrics-checked

UMA

Universal machine-learning interatomic potential trained on 30B+ atoms, for materials and molecules.

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About

UMA — the Universal Model for Atoms — is Meta FAIR's machine-learning interatomic potential, released in 2025 alongside the Open Molecules 2025 (OMol25) dataset of 100M+ DFT-computed molecular snapshots. It is trained on more than 30 billion atoms drawn from Meta's open-science simulation datasets of the past five years (Open Catalyst, OpenDAC, Open Materials 2024, OMol25), spanning molecules, materials and catalysts. The pitch is a single foundational potential accurate enough to model atomic interactions across chemistry, usable directly or as a base for fine-tuning.

Meta positions UMA as open science: model downloads and a paper are published, and partners including Lawrence Livermore National Laboratory and the CuspAI AI Materials Foundry are building on it. As an interatomic potential rather than a chatbot-style model, its users are computational chemists running molecular dynamics and high-throughput screening — the audience that previously stitched together narrow, system-specific potentials.

Specs

Context window

Not applicable — input is atomic structures/coordinates, not tokens

Pricing

Free / open model download

Free quota

Unlimited (self-hosted)

API access

No official hosted API; download the model from Meta's release page and self-host

Weights

Open weights

Released

Not disclosed

Benchmarks

  • Provider-reported (Meta): sets new standards for modeling atomic interactions across materials and molecules
  • No standardized public benchmark scores found in sources checked

Provider-reported unless a source says otherwise. Benchmarks are marketing-adjacent by nature — treat them as directional.

Use cases

materials-discoverymolecular-dynamicsatomistic-simulationcatalyst-designcomputational-chemistry

Trust score — 7/10

/10 trustMetrics-checked

Scored 7/10 (TIER metrics, metrics-v1). Evidence: official Meta FAIR release (ai.meta.com) with model download + paper; trained on 30B+ atoms across five years of Meta open datasets; real downstream adoption (CuspAI AI Materials Foundry, LLNL collaboration). Strengths: massive training scale, institutional backing, genuine open download. Docked for: (1) no independent benchmark verification found — accuracy claims are provider-reported; (2) exact license terms not confirmed in sources checked. License: not confirmed in sources checked.

How the trust score is built

Full methodology →
Adoption · stars/downloads, log-scaled vs peers
6.0/10
Maintenance · recency, releases, issue load
8.0/10
Openness · license + docs
7.0/10
Manual review · sanity read + red-flag check
7.0/10
  • · Released 2025 with OMol25 (100M+ DFT snapshots); trained on 30B+ atoms
  • · Model download + paper published by Meta FAIR
  • · Adopted by CuspAI AI Materials Foundry; LLNL collaboration

Sources