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Speech-to-speech translation research benchmarks – Page 2 · SOTA2 Research

Speech-to-speech translation

Benchmarks

Dataset NameSOTA MethodSort

Dataset NameSOTA methodMetricTrendResultsLast Updated

Audio-NTREX-4L long-form (test)

33.2BLEU

9

Feb 26, 2026

Europarl-ST short-form (test)

35BLEU

9

Feb 26, 2026

84.52ASR-BLEU (Fr->En)

9

Feb 26, 2026

CVSS-C French to English (test)

25.82ASR BLEU

8

Feb 27, 2026

CVSS En-Fr (test)

CMLM + DIFFNORM + CG

17.54ASR BLEU

8

Feb 26, 2026

CVSS En-Es (test)

CMLM + DIFFNORM + CG

19.49ASR-BLEU

8

Feb 26, 2026

CVSS-C Fr-En (test)

25.16ASR-BLEU

8

Feb 26, 2026

MuAViC English-to-X

ASR + NMT + TTS + TFG

30.15ASR-BLEU (ES)

8

Feb 26, 2026

MuAViC X-to-English

AVSR + NMT + TTS + TFG

28.7ASR-BLEU (Es->En)

8

Feb 26, 2026

CVSS-C Es-En v1 (test)

32.3ASR-BLEU

8

Feb 26, 2026

PRIME-Speech-9B

41.29S2T BLEU Score

7

Jul 1, 2026

Qwen2.5-Omni-7B

34.59S2T BLEU Score

7

Jul 1, 2026

4.21Fr->En BLASER 2.0 Score

7

May 18, 2026

86.48BLEU

7

Feb 26, 2026

84.36BLEU

7

Feb 26, 2026

TAT-S2ST Hokkien-En (test)

Synthetic target*

78.5ASR BLEU

7

Feb 26, 2026

TAT-S2ST Hokkien-En (dev)

Synthetic target*

76.2ASR-BLEU

7

Feb 26, 2026

TAT-S2ST En-Hokkien (test)

Synthetic target*

53.4ASR BLEU

7

Feb 26, 2026

TAT-S2ST En-Hokkien (dev)

Synthetic target*

55.5ASR BLEU

7

Feb 26, 2026

3.81MOS-Nat

6

Feb 26, 2026

CVSS-C Avg. (test)

22.63ASR BLEU

6

Feb 26, 2026

CVSS-C En-Es (test)

21.71ASR-BLEU

6

Feb 26, 2026

CVSS-C En-Fr (test)

21.38ASR-BLEU

6

Feb 26, 2026

CVSS-C Supervised Baseline

33.8Fr-En Score

6

Feb 26, 2026

S2ST English-to-Chinese (test)

54.26BLEU

5

Jun 16, 2026

Page 2 of 3

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CVSS CVSS-C Fisher VoxPopuli TAT-S2ST

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