Bolna AI Updates for May, 2025

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Latency improvements for azure TTS.

• We’ve optimized our Azure TTS integration for significantly lower end-to-end latency. This means faster voice generation and snappier response times for live calls.

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Added support for Smallest’s latest lightning-v2 TTS model.

• You can now use Smallest.ai’s new lightning-v2 voices with Bolna AI voice agents.

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Extended maximum call duration to 40 minutes.

• Calls can now last up to 40 minutes, allowing for longer interviews or conversations without interruption.

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Updated Azure clusters

• Support for the following Azure clusters
  1. gpt-4.1 Azure OpenAI
  2. gpt-4.1-mini Azure OpenAI
  3. gpt-4.1-nano Azure OpenAI
  4. gpt-4o Azure OpenAI
  5. gpt-4o-mini Azure OpenAI
  6. gpt-4 Azure OpenAI

Azure OpenAI model clusters

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Updated Elevenlabs to use Multi-Context Websocket for improved latency and fluency.

• This greatly improves the websocket handlings, closures and session contexts.

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Added languages support

• Bolna now supports over 100+ different languages include English (India), English (United States), English (United Kingdom), etc.

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Updates

• Users can now top up for $1000 USD in one go.

Top up $1000 USD option

• Users can now opt for auto recharge.

Auto recharge of funds

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Improvements

• Latency improvements across the AI voice call stack.
• Execution pages now support filters and column selections.

Updated and revamped Executions pages

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Features

• Added viaSocket integration with Bolna Voice AI agents. Added following supporting tutorials:
  1. Go through this tutorial to create Bolna API connection with viaSocket.

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Features

• Added Sarvam TTS bulbul-v2 model for Bolna Voice AI agents.