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Sequence archives

NCBI genome assemblies

NCBI Datasets

4.3M
assemblies · 2026-07-20
S-curve
best-fit model
5.5M
projected 2028
14K1.9M3.7M5.5M200920132017202120255.5M 2028
Logistic (S-curve) fitbest fit (AICc)N(t) = L / (1 + e^{−k(t − t₀)})
carrying capacity L 8.1Msteepness k 0.400 / yrmidpoint t₀ 2026R² 0.9952forecast 5.5M by 2028

Forecast = 10% of the 17-yr record (1.7 yr ahead). Anchored on the latest value; levels off toward L ≈ 8.1M.

How this is tracked
SourceNCBI Datasets
Update cadenceweekly
Live endpointhttps://api.ncbi.nlm.nih.gov/datasets/v2/genome/taxon/1/dataset_report?page_size=1
Parsejson · total_count
Historical sources
All data points (22)
Dateassemblies
2026-07-204,266,543
2026-07-134,248,468
2026-07-064,220,941
2026-06-244,183,542
2025-12-313,351,364
2024-12-312,814,679
2023-12-312,204,898
2022-12-311,658,238
2021-12-311,289,876
2021-04-181,000,000
2020-12-311,013,201
2019-12-31638,809
2018-12-31298,005
2017-12-31216,754
2016-12-31158,180
2015-12-31114,446
2014-12-3177,202
2013-12-3153,990
2012-12-3136,218
2011-12-3126,429
2010-12-3119,769
2009-12-3114,421

Machine-readable: /api/research-data?metric=ncbi-assemblies · back to all metrics

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