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Kasisto, deployed at 40+ financial institutions: 20-50x lower cost per query than GPT-4.1

Kasisto, deployed at 40+ financial institutions (banking software, ~2,000 employees) reported this on 30 Jul 2026 in peer-reviewed paper (source). It belongs to the learning loop layer.

What they built

FinRAG-12B, a 12B model fine-tuned for grounded banking Q&A with citations and trained to say 'I don't know' (22% of training examples unanswerable), serving customer queries in production.

The result

Answer quality 6.21 vs 5.72 for GPT-4.1 on banking QA; ~$0.001 per query, 20-50x cheaper and 3-5x faster than GPT-4.1; training cost ~$1,800; deployed at 40+ financial institutions.

The number covers offline evaluation on 258 banking QA examples from 3 institutions plus serving-cost measurement; baseline is GPT-4.1, an older frontier model.

“…the model delivers 3–5x faster responses at 20–50x lower cost compared to GPT-4.1,” Kasisto, deployed at 40+ financial institutions said.

The layer: The learning loop

Reviewed corrections are kept as test cases and later used to train models.

  • A log of every correction and who reviewed it
  • Eval sets that grow from reviewed corrections
  • New versions, then post-trained models, from that signal

Read the guide to the learning loop.

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