Language reference

This page lists all languages supported by Dialogflow ES. For more information on using languages, see Multilingual agents .

Limitations

The following limitations apply:

• System entity support differs for different languages. Check supported system entities for a specific language in the System entities reference .
• Dialogflow uses Cloud Speech-to-Text for speech recognition. Not all of the STT supported languages also support models for phone calls. The Cloud Speech-to-Text language reference lists languages that support the "Enhanced phone call" and "Phone call" models.

Language table

Most Dialogflow ES features support all of these languages. As indicated by the table below, some features only support a subset of these languages. To filter the table, check your desired features. The filtered table only shows languages that support all selected features.

All

Text (text-only chat)

STT (speech-to-text, audio input, speech recognition)

TTS (text-to-speech, audio output, speech synthesis)

Phone ( Dialogflow Phone Gateway with enhanced speech models disabled )

Knowledge ( Knowledge Connectors )

Sentiment (Sentiment Analysis)

SmTalk ( Built-in Small Talk )

Symbol	Description
*	Language tags follow the HTTP/1.1 specification, section 3.10 .
†	Dialogflow supports both Cyrillic and Latin alphabets for Serbian. However, STT only transcribes spoken Serbian into Latin. If your agent uses the Cyrillic alphabet for training phrases and entity entries, you should restrict the agent to text-only interactions.

Language tag aliases

When supplying a language tag via an API call, some language tag aliases are equivalent to one of the supported language tags:

Supported language tag	Alias language tags
de	de-at, de-be, de-ch, de-li
en-au	en-nz, en-pg
en-gb	en-bw, en-eg, en-gh, en-hk, en-ie, en-ke, en-mt, en-na, en-ng, en-sg, en-tz, en-ug, en-za, en-zm, en-zw
en-in	en-mu
en	en-ae, en-de, en-id, en-mm, en-my, en-nl, en-ph, en-sa, en-se, en-th
es-419	es-ar, es-bo, es-cl, es-co, es-cr, es-do, es-ec, es-gt, es-hn, es-mx, es-ni, es-pa, es-pe, es-ph, es-pr, es-py, es-sv, es-us, es-uy, es-ve
fil	tl
fil-ph	tl-ph
fr	fr-be, fr-cd, fr-ch, fr-ci, fr-cm, fr-dz, fr-es, fr-gb, fr-gp, fr-ma, fr-mc, fr-mu, fr-re, fr-sn, fr-tn, fr-us
it	it-it, it-ch
nl	nl-be