Fields are the second level of the OpenAlex topic hierarchy. There are 26 fields spread across 4 domains. Each field contains multiple subfields. The topic hierarchy is: Domain → Field → Subfield → TopicDocumentation Index
Fetch the complete documentation index at: https://developers.openalex.org/llms.txt
Use this file to discover all available pages before exploring further.
All 26 fields
| ID | Name | Domain |
|---|---|---|
| 11 | Agricultural and Biological Sciences | Life Sciences |
| 12 | Arts and Humanities | Social Sciences |
| 13 | Biochemistry, Genetics and Molecular Biology | Life Sciences |
| 14 | Business, Management and Accounting | Social Sciences |
| 15 | Chemical Engineering | Physical Sciences |
| 16 | Chemistry | Physical Sciences |
| 17 | Computer Science | Physical Sciences |
| 18 | Decision Sciences | Social Sciences |
| 19 | Earth and Planetary Sciences | Physical Sciences |
| 20 | Economics, Econometrics and Finance | Social Sciences |
| 21 | Energy | Physical Sciences |
| 22 | Engineering | Physical Sciences |
| 23 | Environmental Science | Physical Sciences |
| 24 | Immunology and Microbiology | Life Sciences |
| 25 | Materials Science | Physical Sciences |
| 26 | Mathematics | Physical Sciences |
| 27 | Medicine | Health Sciences |
| 28 | Neuroscience | Life Sciences |
| 29 | Nursing | Health Sciences |
| 30 | Pharmacology, Toxicology and Pharmaceutics | Life Sciences |
| 31 | Physics and Astronomy | Physical Sciences |
| 32 | Psychology | Social Sciences |
| 33 | Social Sciences | Social Sciences |
| 34 | Veterinary | Health Sciences |
| 35 | Dentistry | Health Sciences |
| 36 | Health Professions | Health Sciences |
Filter, sort, and group_by fields
The API supports filtering, sorting, and grouping on fields fields. See Filtering, Sorting, and Grouping for syntax. Fields marked (deprecated) are.search filters — use the search parameter instead.
| Field | Sort | Group_by | Filter |
|---|---|---|---|
cited_by_count | ✓ | ✓ | ✓ |
default.search (deprecated) | ✓ | ||
display_name | ✓ | ✓ | |
display_name.search (deprecated) | ✓ | ||
domain.id | ✓ | ✓ | ✓ |
from_created_date | ✓ | ✓ | |
id | ✓ | ✓ | ✓ |
subfields.id | ✓ | ✓ | ✓ |
works_count | ✓ | ✓ | ✓ |