Observed Antibody Space (OAS)
Repository of >1B antibody BCR sequences from public repertoires — core for antibody LM pretraining.
Composite score: 97.5
Rubric (1–5 per criterion)
rigor
5/5
coverage
5/5
maintenance
5/5
adoption
5/5
quality
4/5
accessibility
5/5
industry_relevance
5/5
Metadata
Stages
Hit IDLead ID / ADMET
Modalities
biologic-mab
Task types
antibody-sequence
License
CC-BY 4.0
First release
2018
Last updated
2025-04
Flags
none
Size & scope
- sequences: 2400000000
- repertoires: 15000
Primary paper
Title
Observed Antibody Space: A diverse database of cleaned, annotated, and translated unpaired and paired antibody sequences
Authors
Olsen TH, Boyles F, Deane CM
Year
2022
DOI / arXiv
Citations
310
Links
- Official site: https://opig.stats.ox.ac.uk/webapps/oas/
- GitHub: N/A
- Leaderboard: N/A
Hosted by (initiatives)
- not hosted by any tracked initiative
Experts (primary authors / maintainers)
Groups (host labs / companies / consortia)
Related benchmarks
Notes (honest caveats)
Underlies AbLang, IgLM, AntiBERTa — industry-adopted.