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, resulting in faster voice generation and snappier response times for live calls.

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Smallest.ai Lightning-v2 TTS Support

• Added support for Smallest.ai’s latest lightning-v2 TTS model for Bolna AI voice agents.

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Extended Call Duration Limit

• Extended maximum call duration to 40 minutes, allowing for longer interviews or conversations without interruption.

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Azure OpenAI Model Updates

• Added support for the following Azure OpenAI 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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ElevenLabs Multi-Context WebSocket Integration

• Updated ElevenLabs to use Multi-Context WebSocket for improved latency and fluency.
• The Multi-Context WebSocket greatly improves websocket handling, closures, and session contexts.

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Multilingual Support Expansion

• Bolna now supports over 100+ different languages including English (India), English (United States), English (United Kingdom), and many more.

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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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viaSocket Integration

• Added viaSocket integration with Bolna Voice AI agents.
• Tutorial: Learn how to create a Bolna API connection with viaSocket.

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Sarvam TTS Bulbul-v2 Support

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