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Czech translation and speech models cs

9 models into Czech, 9 from Czech, 1 speech-to-text. Best scored into Czech: English to Czech (chrF++ 52.4). Best scored from Czech: Czech to English (chrF++ 59.6).

Into Czech

ModelchrF++ (FLORES-200 dev)Licence
English to Czech best scored
translate-en-cs
52.4 GoodApache-2.0
German to Czech
translate-de-cs
48.5 GoodApache-2.0
Swedish to Czech
translate-sv-cs
45.9 GoodApache-2.0
Finnish to Czech
translate-fi-cs
45.5 GoodApache-2.0
Spanish to Czech
translate-es-cs
45.5 GoodApache-2.0
Ukrainian to Czech
translate-uk-cs
40.0 UsableApache-2.0
Esperanto to Czech
translate-eo-cs
25.0 LimitedApache-2.0
Ukrainian to Czech and Slovak
translate-tc-base-uk-ces_slk
not in FLORES-200CC-BY-4.0
English to Czech and Slovak
translate-tc-big-en-ces_slk
not in FLORES-200CC-BY-4.0

From Czech

ModelchrF++ (FLORES-200 dev)Licence
Czech to English best scored
translate-cs-en
59.6 GoodApache-2.0
Czech to French
translate-cs-fr
56.9 GoodApache-2.0
Czech to German
translate-cs-de
52.9 GoodApache-2.0
Czech to Swedish
translate-cs-sv
50.6 GoodApache-2.0
Czech to Finnish
translate-cs-fi
44.3 UsableApache-2.0
Czech to Ukrainian
translate-cs-uk
39.6 UsableApache-2.0
Czech to Esperanto
translate-cs-eo
26.3 LimitedApache-2.0
Czech and Slovak to Ukrainian
translate-tc-base-ces_slk-uk
not in FLORES-200CC-BY-4.0
Czech and Slovak to English
translate-tc-big-ces_slk-en
not in FLORES-200CC-BY-4.0

Czech speech-to-text

ModelFormatsLicence
listen-windy-lingua-cssafetensorsApache-2.0 lineage under review

Scores: chrF++ on FLORES-200 dev, 48 sentences, measured 2026-08-04. Method.