Sigma AI
Build enterprise-ready voice and chat AI agents with a no-code platform for customer service, sales, and support.
| What is it | Build enterprise-ready voice and chat AI agents with a no-code platform for customer service, sales, and support. |
|---|---|
| Pricing | Paid |
| Free tier | Yes |
| Platform | Web Application |
| Best for | automated customer support calls, lead qualification and sales outreach |
| Domain registered | 2023 |
Data updated Aug. 1, 2026
What does Sigma AI do?
Sigma AI is a comprehensive platform for building and deploying enterprise-grade voice and chat AI agents. It enables businesses to create sophisticated conversational AI that can handle customer interactions across multiple channels including phone calls, live chat, and email. The platform is designed specifically for complex business use cases like customer support, sales outreach, lead qualification, and appointment scheduling, with pre-built templates for industries like finance, healthcare, insurance, e-commerce, and telecommunications.
What sets Sigma AI apart is its no-code approach combined with enterprise-level capabilities. Users can design complex conversation flows using a visual drag-and-drop builder without needing programming skills, while still having access to advanced features like custom API integrations, function calling, and model agnosticism. The platform supports mixing different AI models for speech-to-text, logic processing, and text-to-speech, giving users flexibility to choose the best components for their needs. The infrastructure is optimized for low latency with sub-800ms voice response times and can scale to handle hundreds of concurrent calls.
This tool is particularly valuable for businesses looking to automate customer-facing operations at scale. Customer service teams can deploy AI agents for routine inquiries, sales departments can use it for lead qualification, and companies in regulated industries benefit from the built-in compliance features. The platform's detailed analytics help track performance metrics like call volume, transfer reasons, and cost breakdowns, making it easy to optimize ROI and agent effectiveness over time.
Key features
What makes it stand outWho is Sigma AI for?
Who benefits most from this toolPricing
Free tier available — start without a credit cardPay as you go
- 0.015 llm gpt 5
- 0.02 llm gpt 4o
- 0.06 tts openai
- 0.015 llm gpt 4 1
- 0.015 llm gpt 5 1
- 0.02 llm gpt 5 2
- 0.06 tts hume AI
- 0.02 tts rime AI
- 0.01 stt deepgram
- 0.06 tts cartesia
- 0.003 llm gpt 5 mini
- 0.001 llm gpt 5 nano
- 0.05 tts elevenlabs
- 0.01 tts inworld AI
- 0.002 llm gpt 4o mini
- 0.005 chat AI platform
- 0.003 llm gpt 4 1 mini
- 0.001 llm gpt 4 1 nano
- 0.015 telephony twilio
- 0.03 voice AI platform
- 0.05 llm gemini 2 5 pro
- 0.05 llm claude 4 sonnet
- 0.02 llm gemini 2 0 flash
- 0.005 llm gemini 2 5 flash
- 0.05 llm gemini 2 5 ultra
- 0.0045 llm gpt 4o mini fast
- 2 phone number monthly
- 0.02 llm claude 3 5 sonnet
- 0.05 llm claude 3 7 sonnet
- 0.05 llm claude 4 5 sonnet
- 0.005 llm gemini 2 0 flash lite
- 0.005 llm gemini 2 5 flash lite
- Unlimited Agents
- Playground testing
- Multi-client workspaces
- Standard analytics & reports
- Basic security
- Discord & documentation support
Enterprise
- custom chat AI platform
- custom voice AI platform
- Unlimited Agents
- Playground testing
- Centralized or isolated workspaces
- Advanced analytics and reports
- SOC2, SSO, HIPPA compliance
- Priority Slack channel
- Dedicated account manager
- Defined support SLAs
- Defined priority SLAs
Trust & presence
Gallery
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