Python SDK v5 restricts Voice Agent language to “en” and “es” despite docs mentioning multi-language support

[copernicus06]

I’m using the Deepgram Voice Agent API with the Python SDK v5 and ran into a limitation around language configuration.

Problem

Documentation mentions broader/multi-language support, but the SDK appears to restrict the agent language to only:

en
es

From the SDK model definition:

class AgentV1Agent(UniversalBaseModel):
    language: typing.Optional[typing.Literal["en", "es"]] = "en"

When I try to initialize the agent with another language (example: ja), it fails validation.

Example error

Request ID:

a1ea63fa-013a-4562-b86d-c45bdcb2ca09

Error:

ValidationError: 1 validation error for AgentV1Agent language
Input should be 'en' or 'es' [type=literal_error, input_value='ja']

This prevents the agent from connecting and results in a connection failure.

Context
• API: Voice Agent API
• SDK: Python SDK v5
• Connection: WebSocket
• Attempted language: ja

Questions
1. Is Voice Agent currently limited to English and Spanish only?
2. Is the SDK behind the API in terms of language support?
3. Is there a recommended way to configure other languages (if supported)?
4. Are there plans to expand the allowed language literals in the SDK?

Would appreciate clarification on the current supported languages for Voice Agent when using Python SDK v5.

[deepgram-community[bot]]

Thanks for asking your question. Please be sure to reply with as much detail as possible so the community can assist you efficiently.
_{Consider joining our Discord community for more opportunity to engage with your fellow Deepgram users. You can earn points which can be redeemed for cool stuff by being active in our communities!}

[deepgram-community[bot]]

Hey there! It looks like you haven't connected your GitHub account to your Deepgram account. You can do this at https://community.deepgram.com - being verified through this process will allow our team to help you in a much more streamlined fashion.

[deepgram-community[bot]]

hey there thanks for getting in touch. looks like we'll need to fix that in the SDK, as the agent supports any STT-supported language + appropriate TTS provider to support language(s). i'll raise an issue on the python SDK to ensure this gets resolved in an upcoming release

This message was sent by luke from Deepgram, via our community automation.