ClairS and Clair3
ClairS is a specialized variant caller for detecting somatic mutations in long reads, while Clair3 is a general-purpose germline variant caller for long reads, making them complementary tools for different variant calling contexts rather than direct competitors.
About ClairS
HKU-BAL/ClairS
ClairS - a deep-learning method for long-read somatic small variant calling
About Clair3
HKU-BAL/Clair3
Clair3 - Symphonizing pileup and full-alignment for deep learning-based long-read variant calling
Employs a dual-model architecture combining fast pileup-based calling with computationally intensive full-alignment models for complex variants, optimizing both speed and accuracy across coverage depths. Recently migrated to PyTorch with GPU acceleration (~5x speedup on Linux/Apple Silicon) and added signal-aware variant calling via Dorado move tables. Provides pre-trained models for multiple sequencing chemistries (Guppy 2-6, R10.4 Q20) and supports both standard germline VCF/GVCF output with modular training pipelines for custom datasets.
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