
Open ASR Leaderboard's Hindi and Indian English Sets
Eight models sit inside a 0.18-point WER band on Indian English, so score alone cannot pick a winner. The numbers that separate them are regional: 0.46 points of spread for one model, 1.68 for another.
Use it, but read spread, not rank. The Open ASR Leaderboard's new Hindi and Indian English sets, published August 28, 2026, show eight models bunched between 4.81 and 4.99 WER on Indian English, so rank tells you little. The deciding number is regional spread: 0.46 points for Whisper-large-v3-turbo, 1.68 for Voxtral-Mini-3B.
The Weights Desk · 4 min read- Eight models land between 4.81 and 4.99 WER on the Indian English public set, a 0.18-point band, so aggregate WER does not separate them.
- Regional spread does separate them: Whisper-large-v3-turbo varies by 0.46 points across five zones, Voxtral-Mini-3B-2507 by 1.68 (4.38 WER in the Central zone, 6.06 in the East).
- Hindi is scored with OIWER, which accepts any linguist-validated spelling variant instead of charging it as an error.
- The Hindi public split is only 1.33 hours, so self-scoring there rests on a thin sample; the 4.47-hour Hindi private split is withheld.
- The post text we reviewed gives no full per-model table, so no Hindi ranking can be stated from it.
The Open ASR Leaderboard now scores Hindi and Indian English, and the useful signal is not who ranks first. In a post dated August 28, 2026, Hugging Face and Voice Arena describe eight models landing between 4.81 and 4.99 WER on the Indian English public split, a 0.18-point band. What separates the models is how evenly they perform across regions: Whisper-large-v3-turbo varies by 0.46 points across five zones, Voxtral-Mini-3B-2507 by 1.68. The bottom line is Use it, with the spread as the deciding number.
Use it: the badge and the number behind it
The Weights' call is Use it, because the sets add a way to see regional spread and orthographic variance in Indian speech. The deciding number is 1.68 versus 0.46. On the Indian English public set, Voxtral-Mini-3B-2507 scores 4.38 WER in the Central zone and 6.06 in the East, while Whisper-large-v3-turbo moves 0.46 points across the same five zones, according to the post. The badge attaches to the benchmark, not to any model, and it is conditional on reading spread instead of rank.
Four speaker-disjoint splits, with a thin Hindi public set
The release comprises four speaker-disjoint splits, a public and a private one for each language. Indian English has 5.62 hours from 1,444 speakers public and 5.58 hours from 1,405 speakers private. Hindi has 1.33 hours from 468 speakers public and 4.47 hours from 1,571 speakers private. The public splits are for self-scoring; the private ones are withheld to limit benchmark-specific optimisation, per the post. At 1.33 hours, the Hindi public split is the smallest, so a team scoring itself there is working from a thin sample.
Eight models inside 0.18 WER points cannot be ranked by score
A 0.18-point band is too narrow to choose on. The post says eight models on the leaderboard land between 4.81 and 4.99 WER on the Indian English public set. The text we reviewed neither names all eight nor gives their exact scores, and we found no confidence intervals, so we cannot say which models sit at each end or whether the gaps are meaningful. What the band does suggest is that headline WER is close to indistinguishable here, and a deployment decision has to turn on something else: latency budget, cost per call, or consistency across regions.
Regional spread is the failure mode an average hides
The zone breakdown is where the models separate. Whisper-large-v3-turbo varies by 0.46 points across five geographic zones on the Indian English public set. Voxtral-Mini-3B-2507 varies by 1.68, from 4.38 WER in the Central zone to 6.06 in the East. That is roughly 38 percent more word errors in the East than in the Central zone for one model, and the spread is more than nine times the 0.18-point band that separates all eight models. A single averaged score would bury that gap.
OIWER stops charging models for valid Hindi spelling
Hindi is scored with OIWER, Orthographically-Informed Word Error Rate, rather than plain WER. Per the post, the metric scores a hypothesis against the accepted set of written forms at each span of the transcript, so any admitted form counts as correct and only genuine recognition errors are charged. Candidate variants are drawn from multiple ASR transcripts of the same audio, expanded with language models, and then native-speaker linguists decide which are valid for that utterance. The post cites a paper for the method and releases scoring code as the voi-oiwer package.
What the sets do not fix
The authors say the sets do not fix orthographic and demographic evaluation problems; what they add is a way to see them. Two limits follow. The post says the Hindi sets concentrate regionally more tightly than the Indian English ones, so zone spread measured on English cannot be assumed to transfer to Hindi. And the text we reviewed reports no per-model Hindi OIWER table, so no Hindi ranking can be stated here. Teams choosing on Hindi should score their own audio.
The bottom line
The bottom line: Use it as a robustness check, not a shopping list. Test a shortlist for regional consistency rather than copying someone else's model choice. Score candidates per zone on Indian English and with OIWER on Hindi, and treat a spread near Voxtral's 1.68 points as a red flag if your users span regions. Then confirm on your own audio, since the private splits are withheld and the Hindi public split is only 1.33 hours. Watch for per-zone tables and a full Hindi OIWER ranking on the leaderboard.
- Which languages did the Open ASR Leaderboard add?
- Hindi and Indian English, through the Monsoon evaluation sets built with Voice Arena and described in a Hugging Face post dated August 28, 2026. Hindi is the leaderboard's first Indic language, per the post.
- What is the number that matters most in the new results?
- Regional spread. On the Indian English public set, Whisper-large-v3-turbo varies by 0.46 points across five zones. Voxtral-Mini-3B-2507 varies by 1.68, from 4.38 WER in the Central zone to 6.06 in the East.
- Why is Hindi scored with OIWER instead of WER?
- Hindi has valid alternative spellings. OIWER scores a hypothesis against the accepted set of written forms at each span of the transcript, so admitted variants count as correct and only genuine recognition errors are charged.
- Can I rank the eight Indian English models from the post?
- Not from the text we reviewed. It says eight models land between 4.81 and 4.99 WER on the public set but does not name all eight or give their exact scores.
- What is the bottom line for a team choosing an ASR model?
- Use the sets as a regional-consistency check on a shortlist, not as a ranking to copy. The badge is Use it, and the deciding number is zone spread: 0.46 points versus 1.68.
- The Open ASR Leaderboard Adds Its First Global South Language — Hugging Face
- MonsoonASR-Open-ASR-leaderboard-en-IN (dataset) — Hugging Face / Voice Arena
- MonsoonASR-Open-ASR-leaderboard-hi-IN (dataset) — Hugging Face / Voice Arena
- voi-oiwer (OIWER scoring package) — Python Package Index
- Towards Orthographically-Informed Evaluation of Speech Recognition Systems for Indian Languages — arXiv