Data and AI releases

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This Release Contains The Following Changes

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- Certificate Endpoint Fix , Engine now responds to /v1/certificates in addition to /certificates , consistent with the other container images. See Certificate Status for details. Model Name Consistency , The /v1/models endpoint now returns a canonical_name field matching the model name used in /v1/listen requests.

Also shipped Apr 2, 2026Deepgram in April 2026 →

Database Observability now Generally Available

Database Observability brings your MySQL and PostgreSQL query performance data directly into Grafana Cloud, right alongside your metrics, logs, and traces. With Database Observability, you can identify slow and failing queries, understand wait events, analyze explain plans, and examine query samples all within Grafana.

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Container Images (release 260402)

- quay.io/deepgram/self-hosted-api:release-260402 Equivalent image to: quay.io/deepgram/self-hosted-api:1.181.3 quay.io/deepgram/self-hosted-engine:release-260402 Equivalent image to: quay.io/deepgram/self-hosted-engine:3.114.5 Minimum required NVIDIA driver version: >=570.172.08 quay.io/deepgram/self-hosted-license-proxy:release-260402 Equivalent image to...

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NVIDIA LLM provider now available

NVIDIA is now a supported LLM provider for the Voice Agent API. The following model is available in the Standard pricing tier: nemotron-3-nano-30B-A3B , Nemotron 3 Nano 30B A3B provides cost efficiency with high accuracy for targeted agentic tasks.

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Example

{ "type": "FunctionCallRequest", "functions": [ { "id": "fc_12345678-90ab-cdef-1234-567890abcdef", "name": "get_weather", "arguments": "{\"location\": \"Fremont, CA 94539\"}", "client_side": true, "thought_signature": "abc123" } ] } The thought_signature field is optional and only relevant when using Google Gemini models.

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New volume parameter for Cartesia TTS

The Voice Agent API now supports an optional agent.speak.provider.volume parameter when using Cartesia as the TTS provider. Valid values range from 0.5 to 2.0 . For more details, see Configure the Voice Agent or the Cartesia volume, speed, and emotion documentation .

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Nova-3 Model Update

🌏 Nova-3 now supports the following new languages and language codes: Chinese (Mandarin, Simplified): zh , zh-CN , zh-Hans Chinese (Mandarin, Traditional): zh-TW , zh-Hant Access these models by setting model="nova-3" and the relevant language code in your request. Learn more about Nova-3 and supported languages on the Models and Language Overview page.

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Reusable agent configurations

You can now store and manage agent configurations and template variables through the Deepgram API. Instead of sending a full agent configuration with every WebSocket session, define it once and reference it by UUID.

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TTS speak speed (Early Access)

You can now control the speaking rate of Deepgram TTS in the Voice Agent API using the agent.speak.provider.speed parameter. This parameter accepts a float value between 0.7 and 1.5 , with 1.0 as the default.

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