Releasesby GlyphAura-2 Speed and Pronunciation Controls require an updated voice-pack
The new Aura-2 Speed and Pronunciation Control features in this release are powered by an updated Aura-2 English voice-pack model. If your deployment is using an Aura-2 English voice-pack from before the April 2026 release (e.g., the 2025-04-15.0 version of the voice-pack), requests including the speed or pronounce parameters will return 400 Bad Request .
Also shipped Apr 30, 2026Deepgram in April 2026 →
Response Caching: Zero Cost for Identical Requests
OpenRouter introduced a Response Caching header that enables caching for identical API requests. This feature reduces latency and eliminates costs for repeated requests.
Cloudflare One, Cloudflare WAN - Post-quantum IPsec interoperability with third-party devices
Cloudflare IPsec now supports post-quantum key agreement with compatible third-party devices. Cisco ↗ and Fortinet ↗ are the first third-party vendors validated to interoperate with Cloudflare IPsec using ML-KEM (Module-Lattice-Based Key-Encapsulation Mechanism).
SDK - Cloudflare TypeScript SDK v6.0.0 Released
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Speed - Shared dictionaries passthrough now in open beta
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Sentry's Perforce Integration is now Generally Available
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JavaScript SDK 10.51.0: Nitro SDK now in beta
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More from DeepgramEvery Deepgram release →
Container Images (release 260430)
- quay.io/deepgram/self-hosted-api:release-260430 Equivalent image to: quay.io/deepgram/self-hosted-api:1.185.0-2 quay.io/deepgram/self-hosted-engine:release-260430 Equivalent image to: quay.io/deepgram/self-hosted-engine:3.116.0-1 Minimum required NVIDIA driver version: >=570.172.08 quay.io/deepgram/self-hosted-license-proxy:release-260430 Equivalent image...
This Release Contains The Following Changes
- Nova-3 Gujarati , Nova-3 now supports Gujarati ( gu ) for both batch and streaming. Aura-2 Speed and Pronunciation Controls , Aura-2 TTS voices now support runtime speed and pronunciation control. See Voice Controls for details.
GPT-5.5 LLM Model Support
OpenAI's GPT-5.5 model is now available as a managed LLM in the Voice Agent API. GPT-5.5 is an Advanced tier model. Set the model in your agent configuration: { "agent": { "think": { "provider": { "type": "open_ai", "model": "gpt-5.5", "temperature": 0.7 } } } } For the full list of supported models and pricing tiers, see the Voice Agent LLM Models...
Llama Nemotron Super 49B Removed
The llama-nemotron-super-49B (Llama Nemotron Super 49B) model has been removed from the NVIDIA provider due to poor performance. The nemotron-3-nano-30B-A3B model remains available. See the NVIDIA models table for current options.
Cartesia TTS Speed Control
The agent.speak.provider.speed parameter now supports Cartesia TTS in addition to Deepgram TTS. For Cartesia, the parameter accepts the following preset values: slowest slow normal fast fastest You can also pass a numerical value for more granular control. See the Cartesia speed documentation for details.
Aura-2 Voice Controls , Speed and Pronunciation
Aura-2 TTS voices now support runtime speed and pronunciation controls in English and Spanish, available on both batch and streaming WebSocket endpoints. Together, these controls give developers finer-grained tools to improve naturalness , tuning pacing and correcting pronunciation to match their needs.
Voice Agent
These controls are also supported when using Aura-2 inside the Voice Agent API: set speed once at the session level, and have the LLM emit pronunciation overrides inline. See Voice Agent TTS Controls for the recommended setup.
Self-Hosted
These controls are powered by an updated Aura-2 voice-pack model. Self-hosted deployments using a voice-pack from before the April 2026 release will return 400 Bad Request on requests including speed or pronounce parameters. See the April 2026 self-hosted release notes for voice-pack version requirements and upgrade instructions.