PETRA
SARS-CoV-2 · Mutation Forecasting

Predicting the next
branches of an
evolving virus.

Pretrained Evolutionary TRAnsformer — AI-powered mutation forecasting for emerging SARS-CoV-2 variants. Explore the evolutionary landscape before the next lineage appears.

Model: PETRA Training cutoff: 2026-04-22 Data: UShER global phylogeny
K444T S:N501Y ORF1a:T3255I C10207T G28881A T22917G A23403G
variant growth tracking
Recently Designated Variants (loading…)
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§ 01 Query
Required
Optional
§ 02 Batch

Batch Analysis (FASTA)

Upload a FASTA file — automatically classify variants and predict mutations. Max 50 sequences.

Supported: .fasta, .fa, .fna — max 50MB. Sequences beyond 50 are ignored.

#SequenceVariantAdd. MutsPredictions
Prediction Results · PETRA model trained on UShER data 2026-04-22