IgLM

Antibody-specific generative language model - academic licence only.

Developer: Gray Lab, Johns Hopkins University

Not for commercial useNo commercial option at any price

Overview

Developer
Gray Lab, Johns Hopkins University
Commercial rights
Non-commercial
Commercial cost
No commercial option
Compute
Single GPU
Open weights
Yes
Last verified

Capabilities

Generates and infills antibody sequences conditioned on species and chain type. Input: a partial antibody sequence with a span to fill, plus species/chain tokens; output: completed sequences with likelihoods, used for library generation and for scoring how natural a designed CDR looks.

When to use it

Academic antibody library generation and naturalness scoring. For commercial work, AbLang2 (BSD-3) and IgBert/IgT5 (MIT) cover the same ground.

Input / Output

Input
a partial antibody sequence with a span to fill, plus species/chain tokens
Output
completed sequences with likelihoods, used for library generation and for scoring how natural a designed CDR looks

Compute

Single GPU. Other tools with this compute profile →

Commercial Licensing

Commercial rights — may a company use it?

Not for commercial use

Licence as writtenJHU Academic Software License Agreement

LICENSE.md is the JHU Academic Software License Agreement, effective only between JHU and 'a non-profit academic or non-profit research institution'. Same pattern as IgFold from the same lab. A company needs a separate agreement with JHU.

Original sources — read on 15 Oct 2026
  1. raw.githubusercontent.com/Graylab/IgLM/main/LICENSE.md

The licence limits use to non-commercial purposes; a company needs a separate agreement.

Commercial cost — is commercial use free of charge?

No commercial option at any price

No fee for academics; no published commercial price. Commercial use would require negotiating with JHU's technology transfer office.

Original sources — read on 15 Oct 2026
  1. raw.githubusercontent.com/Graylab/IgLM/main/LICENSE.md

Price and rights are separate: this panel is about money, the panel above is about permission.

  • Commercial OK ≠ Free of charge. A tool can be licensed for company use and still need a paid licence for a dependency (BindCraft → PyRosetta).
  • Free download ≠ Commercially licensed. Weights you can download at no cost may still forbid commercial use (AlphaFold 3).
  • Unverified ≠ Commercially permitted. If no published statement settles it, treat it as unknown — not as a yes.
  • Every component counts. Each status considers the code licence, the model-weights terms, required dependencies and any terms of use.

Model Weights

Open weights. A separate weights licence is Not documented as its own field; where weights carry different terms from the code, that is stated in the licence explanation above.

Dependencies

Not documented as a separate field. Any dependency that affects commercial use (for example a paid PyRosetta licence) is named in the licence and cost explanations above.

Official References

Official site / repo
github.com/Graylab/IgLM

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