Stellar provides AI-driven voice agents that handle inbound support calls 24 hours a day, using large‑language models with real‑time speech‑to‑text and text‑to‑speech to understand and respond to callers. The agents integrate with any RESTful backend to retrieve or update data, automating up to 70 % of routine inquiries across 50+ languages while offering enterprise‑grade security and analytics through a cloud‑hosted control plane.
Funding
Funding not disclosed
Founders
Product
Problem
Many organizations rely on legacy IVR menus and human agents for phone support, resulting in long wait times, limited after‑hours availability, and high labor costs for handling routine inquiries. Routine requests such as order status checks, account updates, or simple troubleshooting consume a large portion of agent time, reducing efficiency and increasing operational expenses.
Solution
Stellar delivers AI‑powered voice agents that answer inbound support calls with a natural, brandable voice and operate 24 hours a day, 7 days a week. The agents use state‑of‑the‑art large‑language models combined with real‑time speech‑to‑text and text‑to‑speech pipelines to understand caller intent and respond conversationally. Integrated API connectors let the agents retrieve or modify data in any backend system—CRM, ticketing, e‑commerce platforms, or custom services—enabling autonomous resolution of up to 70 % of routine requests. Multilingual support automatically detects and switches among more than 50 languages, providing a consistent experience for global customers. A cloud‑hosted control plane (Stellar Studio) offers an agent editor, sandbox testing, automated quality evaluation, and detailed post‑call analytics, allowing teams to iterate and monitor performance at scale. Enterprise‑grade security—including ISO 27001 certification, GDPR compliance, zero‑retention policies, and EU‑resident data processing—protects sensitive information while guardrail models enforce policy compliance and prevent unsafe interactions.
Features
- Lifelike, brandable voice synthesis powered by leading LLM providers, with selectable personas and regional dialects.
- Seamless API integration layer that can read from or write to any RESTful endpoint, enabling real‑time order look‑ups, ticket updates, password resets, and more.
- Automatic language detection and on‑the‑fly switching across 50+ supported languages, with customizable language‑specific prompts.
- Guardrail subsystem that runs parallel AI models to enforce business rules, trigger human handoff, or terminate unsafe conversations.
- Automated QA engine that generates transcripts, call summaries, CSAT scores, and custom evaluation metrics for every interaction.
- Stellar Studio control center with visual agent editor, voice/playground testing, automated test suites, and versioned deployment pipelines.
- Enterprise security stack: ISO 27001 certified, GDPR compliant, zero data retention, EU‑only data residency, and end‑to‑end encryption.
- Scalable cloud infrastructure with low latency routing, capable of handling sudden call‑volume spikes without manual provisioning.