Answer.AI releases 33M parameter ColBERT model with outsize performance

lateinteraction · x · 2026-08-19

Answer.AI released a proof-of-concept model, answerai-colbert-small-v1, with just 33 million parameters (MiniLM-sized). Thanks to the new JaColBERTv2.5 training recipe, it outperforms all similarly-sized models on common benchmarks and even beats larger popular models like e5-large-v2 and bge-base-en-v1.5. It is compatible with all recent ColBERT implementations.

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