Yellow.ai is an Enterprise Voice Agents company founded in 2016 and based in San Mateo, United States. It has raised $102.2M in total funding, most recently a Series C in 2021 at a $428M valuation.
| Date | Stage | Amount | Valuation | Lead investors |
|---|---|---|---|---|
| Aug 1, 2021 | Series C | $78.2M | $428M | WestBridge Capital, Sapphire Ventures |
| Apr 1, 2020 | Series B | $20M |
| — |
| Lightspeed Venture Partners |
| Jun 1, 2019 | Series A | $4M | — | Lightspeed Venture Partners |
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Enterprise conversational AI platform for automating customer and employee support across 35+ channels including voice, chat, SMS, email, and WhatsApp in 100+ languages. Features a multi-LLM architecture that selects the best model per conversation turn, agentic AI that thinks and acts autonomously on complex queries, and a low-code workflow builder for business teams. Named a Gartner Magic Quadrant Challenger for Conversational AI Platforms in 2025.
Natural-sounding voice interaction engine enabling AI agents to handle live phone calls with human-like cadence, interruption handling, and emotional context awareness. Powers omnichannel deployments where the same agent logic runs across both voice and digital messaging channels; used by 1,000+ enterprise customers including Domino's and Sony across APAC and EMEA markets.
Emotional intelligence layer built into Yellow.ai agents that detects customer sentiment, tone, and context to dynamically adjust response style and escalation decisions. Enables more empathetic, context-appropriate interactions for sensitive use cases in healthcare, banking, and high-stakes customer service, differentiating the platform from purely transactional chatbot solutions.
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