# NVIDIA trains Nemotron 3.5 ASR on Saudi dialects, cutting error rates by over half

Digest AI · Generative AI & Models · published 2026-10-03T12:09:00Z

Canonical: https://digestai.news/story/nvidia-trains-nemotron-3-5-asr-on-saudi-dialects-cutting-error-rates-b

## Summary

NVIDIA has improved its Nemotron 3.5 ASR model to better understand Najdi and Hijazi Arabic dialects using audio from the SADA dataset. The company reports that word error rate dropped from 55.05% to 29.96% and character-level error rate from 31.63% to 12.18% after training. The process used about 133.7 hours of audio, took roughly 4.5 hours on two GPUs, and involved over 12,000 training steps. NVIDIA says this advances voice AI applications in customer service, transcription, and content creation for Saudi users.

## Key points

- NVIDIA trained Nemotron 3.5 ASR on Najdi and Hijazi dialects using 133.7 hours of SADA dataset audio
- Word error rate fell from 55.05% to 29.96%; character error rate from 31.63% to 12.18%
- Training took about 4.5 hours on two GPUs with over 12,000 steps

## Why it matters

Better dialect understanding makes voice AI more accurate and useful for Saudi users in real-world applications like transcription and assistants.

## Sources

1. [NVIDIA's AI Models Master Najdi and Hijazi Dialects: Reducing Speech Recognition Errors by More Than Half](https://sabq.org/en/article/sxaa0l4) (sabq.org, 2026-10-03)

## Cite

Digest AI, "NVIDIA trains Nemotron 3.5 ASR on Saudi dialects, cutting error rates by over half", 3 October 2026, https://digestai.news/story/nvidia-trains-nemotron-3-5-asr-on-saudi-dialects-cutting-error-rates-b

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