# Large Language Model Integrations

The LLM is the brain of your voice agent. It understands what callers say and decides how to respond. Bolna lets you swap between models like GPT-4o, Claude, and DeepSeek without changing your agent configuration, so you can optimize for speed, cost, or reasoning depth.

**Anthropic**  
Connect Anthropic Claude to your Bolna voice agents for smart, natural conversations. Handles complex multi-turn dialogue with 200K token context windows.  
[Learn more](/content/integrations/anthropic/index.html)

**Azure OpenAI**  
Run OpenAI models on Azure with Bolna voice agents. Get enterprise compliance, SLAs, and data residency while powering intelligent phone conversations.  
[Learn more](/content/integrations/azure-openai/index.html)

**DeepSeek**  
Use DeepSeek with Bolna voice agents for strong reasoning at a fraction of the cost. Great for high-volume voice automation where every token counts.  
[Learn more](/content/integrations/deepseek/index.html)

**OpenAI**  
Power your Bolna voice agents with GPT-4o, GPT-4o-mini, or GPT-3.5 using your own API key. Fast, accurate language understanding for every phone call.  
[Learn more](/content/integrations/openai/index.html)

**OpenRouter**  
Access Claude, Mistral, LLaMA, and dozens of other models through one OpenRouter API key on Bolna. Switch models anytime without reconfiguring your agents.  
[Learn more](/content/integrations/openrouter/index.html)

**Perplexity**  
Add Perplexity to Bolna voice agents so they can pull real-time facts during live calls. Perfect for FAQ bots and info-heavy customer conversations.  
[Learn more](/content/integrations/perplexity/index.html)

**Sarvam AI (LLM)**  
Full Indian language AI stack for Bolna voice agents. LLM, speech-to-text, and text-to-speech tuned for Hindi, Tamil, Telugu, Kannada, and 10+ languages.  
[Learn more](/content/integrations/sarvam-llm/index.html)

## Other integration categories

[Telephony](/content/integrations/telephony/index.html)  
[Speech-to-Text](/content/integrations/stt/index.html)  
[Text-to-Speech](/content/integrations/tts/index.html)  
[Tools & Workflows](/content/integrations/tools/index.html)