Benchmark Almanac

AISHELL-1

ERNIE 5.0 0.31% leads since Feb 2026 Dropped

Models transcribe Mandarin read speech. Scored by character error rate.

About 170 hours of speech.

In the authors’ words

An open-source Mandarin speech corpus called AISHELL-1 is released. It is by far the largest corpus which is suitable for conducting the speech recognition research and building speech recognition systems for Mandarin. The recording procedure, including audio capturing devices and environments are presented in details. The preparation of the related resources, including transcriptions and lexicon are described. The corpus is released with a Kaldi recipe. Experimental results implies that the quality of audio recordings and transcriptions are promising.

Abstract of AISHELL-1: An Open-Source Mandarin Speech Corpus and A Speech Recognition Baseline (arXiv:1709.05522, CC0)
Made by AISHELL (Beijing Shell Shell Technology) Released Sep 2017 Speech recognition and translation All tasks public Last in a launch post Oct 2025 , dropped for a newer version Last model added Feb 2026
Level
Everyday Most adults, without training
Scored
Checked automatically A program checks the result against an answer key, unit tests or the expected final state.
Answers
Short answer A number, word or short string matched to a key.
4
Models scored in lab cards
2
Launch posts list it, from 2 labs
4
System cards report it, from 4 labs

ERNIE 5.0 leads with 0.31% among models released by Jan 2026

Best score per model as labs report them in their own cards. Labs pick their own settings, so these compare less cleanly than independent runs.

The newest model with a score here came out in Jan 2026, and nobody has reported a newer one. Among the 20 highest-ranked models on the capability index, these have no score yet:

  1. 1 ERNIE 5.0 0.31%
  2. 2 Kimi-Audio-7B-Instruct 0.60%
  3. 3 LongCat-Flash-Omni 0.63%
  4. 4 MiMo-Audio-7B-Instruct 1.78%
#ModelScoreSettingDateSource
1 ERNIE 5.0 0.31% Feb 2026 Model card
2 Kimi-Audio-7B-Instruct 0.60% Apr 2025 Model card
3 LongCat-Flash-Omni 0.63% Oct 2025 Model card
4 MiMo-Audio-7B-Instruct 1.78% Sep 2025 Model card

2 models have held number one since 2023

Lab claims count from the day the card came out, independent runs from the model’s release.

Moonshot AI Baidu
Lab claims Not tested since Feb 2026
ERNIE 5.0 0.31%

Scores over time

All the scores we have, one dot each, so a model tested at several settings appears more than once.

Reported by the lab in its model card Best so far
0% 20% 40% 60% 80% 100% 2025 2026 ERNIE 5.0 Kimi-Audio-7B-Instruct 0% 20% 40% 60% 80% 100% 2025 2026 ERNIE 5.0 Kimi-Audio-7B-Instruct

Labs moved on to AISHELL-2

Launch posts from every lab that has listed it, one tick per post. Tall colored ticks include it, and short gray ones leave it out.

Moonshot AI
Meituan
DateLaunch postScoreAs the post writes it
31 Oct 2025 LongCat-Flash-Omni 0.63 AISHELL-1
25 Apr 2025 Kimi-Audio-7B-Instruct 0.6 AISHELL-1

4 system cards report it, from 4 labs

Besides launch posts, we read the system cards, model cards and technical reports labs publish with a release. They report far more, including safety and frontier-risk tests.

DateDocumentScoreAs the document writes itSection
4 Feb 2026 ERNIE 5.0 technical report 0.31 AISHELL-1, WER, lower is better (Table 7) Capabilities
31 Oct 2025 LongCat-Flash-Omni technical report 0.63 AISHELL-1, CER, lower is better (Table 9) Capabilities
18 Sep 2025 MiMo-Audio-7B-Instruct technical report 1.78 AISHELL WER, lower is better (Table 9) Capabilities
25 Apr 2025 Kimi-Audio-7B-Instruct technical report 0.6 AISHELL-1, WER, lower is better (Table 4) Capabilities

Versions

We switch the top row to each new version when it comes out. Open it for one row per version. An old version stays in play while people still test it, so whoever first takes it past 85% gets credit for closing it out.

Moonshot AI Baidu
AISHELL-2 Not tested since Feb 2026
AISHELL-1 Not tested since Feb 2026
ERNIE 5.0 0.31%
AISHELL-2 Not tested since Feb 2026

More in Audio and video

All 168 in Audio and video
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  • LVBench In use Hours-long video understanding with multiple-choice questions on reasoning, grounding and summarization. Gemini 4 Argon 91.7%
  • MMVU In use 3,000 expert-annotated questions on videos across 27 disciplines. Multiple-choice and open-ended accuracy. Qwen 3.8 Max 82.4%
  • MLVU In use Multi-task long video understanding (minutes to hours) with multiple-choice and generation tasks. Accuracy. Qwen 3.8 Max 90.8%
  • VoiceBench In use Spoken instructions with speaker, environment and content variation. Voice assistant responses scored by GPT judge or rules. Qwen3.5-Omni-Plus 93.1%
  • TVBench In use Models answer multiple-choice questions on 10 temporal video tasks, such as action counting and ordering, that static frames cannot solve. Scored by accuracy. Qwen 3.8 Max 81.9%