AI Voice Agents — Timeline
46 milestones, source-traced.
Aug 27, 2024
Funding: Retell AI closed a $4.6M Seed round led by Alt Capital with participation from...
Retell AI closed a $4.6M Seed round led by Alt Capital with participation from Y Combinator, Carya Venture, and 20+ angels including Aaron Levie and Michael Seibel.
funding-research →Aug 27, 2024
Funding: Retell AI raised a $4.6 million Seed round led by Alt Capital, with participation...
Retell AI raised a $4.6 million Seed round led by Alt Capital, with participation from Y Combinator and Carya Venture, announced August 27, 2024.
funding-research →Oct 1, 2024
Funding: Sierra raised a $175M Series B led by Greenoaks Capital at a $4.5B valuation.
funding-research →Oct 1, 2024
Funding: Sierra raised a $175 million Series B round at a $4.5 billion valuation, led...
Sierra raised a $175 million Series B round at a $4.5 billion valuation, led by Greenoaks Capital.
funding-research →Oct 1, 2024
Funding: Decagon raised a $65 million Series B in October 2024, led by Bain Capital...
Decagon raised a $65 million Series B in October 2024, led by Bain Capital Ventures, at a $650 million valuation.
funding-research →Oct 9, 2024
Funding: Decagon raised a $65M Series B led by Bain Capital Ventures at a $650M...
Decagon raised a $65M Series B led by Bain Capital Ventures at a $650M valuation.
funding-research →Nov 1, 2024
Product Launch: ElevenLabs launched its Conversational AI developer platform for interactive voice agents.
funding-research →Nov 1, 2024
Product Launch: ElevenLabs launched Conversational AI, a developer platform for building interactive voice agents.
funding-research →Dec 11, 2024
Funding: Vapi raised a $20 million Series A led by Bessemer Venture Partners, with participation...
Vapi raised a $20 million Series A led by Bessemer Venture Partners, with participation from Abstract Ventures, AI Grant, Y Combinator, Saga Ventures, and Michael Ovitz.
funding-research →Dec 11, 2024
Funding: Vapi raised a $20 million Series A led by Bessemer Venture Partners at a...
Vapi raised a $20 million Series A led by Bessemer Venture Partners at a $130 million post-money valuation.
funding-research →Jan 1, 2025
Funding: ElevenLabs closed a Series C at a $3.3 billion valuation with strategic investors including...
ElevenLabs closed a Series C at a $3.3 billion valuation with strategic investors including Deutsche Telekom, LG Technology Ventures, HubSpot Ventures, NTT DOCOMO, and RingCentral Ventures.
funding-research →Jan 30, 2025
Funding: ElevenLabs raised $180 million in a Series C round at a $3.3 billion valuation,...
ElevenLabs raised $180 million in a Series C round at a $3.3 billion valuation, led by a16z and ICONIQ Growth, with strategic investors Deutsche Telekom, HubSpot, and RingCentral participating.
funding-research →Jun 1, 2025
Customer Win: Decagon added 100+ new global enterprise clients including Avis Budget Group, Deutsche Telekom, Block,...
Decagon added 100+ new global enterprise clients including Avis Budget Group, Deutsche Telekom, Block, and Mercado Libre.
funding-research →Jun 23, 2025
Funding: Decagon raised a $131M Series C led by Accel and a16z's growth fund at...
Decagon raised a $131M Series C led by Accel and a16z's growth fund at a $1.5B valuation.
funding-research →Jun 23, 2025
Funding: Decagon raised a $131 million Series C on June 23, 2025, co-led by Accel...
Decagon raised a $131 million Series C on June 23, 2025, co-led by Accel and Andreessen Horowitz (a16z), at a $1.5 billion valuation.
funding-research →Sep 1, 2025
Funding: Sierra raised a $350M Series C led by Greenoaks Capital with participation from Benchmark...
Sierra raised a $350M Series C led by Greenoaks Capital with participation from Benchmark and Sequoia at a $10B valuation.
funding-research →Sep 1, 2025
Funding: ElevenLabs completed a $100 million employee tender offer at a $6.6 billion valuation.
funding-research →Sep 1, 2025
Funding: Sierra raised a $350 million Series C round at a $10 billion valuation, led...
Sierra raised a $350 million Series C round at a $10 billion valuation, led by Greenoaks Capital.
funding-research →Jan 1, 2026
Customer Win: Decagon announced onboarding over 100 new global enterprise customers, including Avis Budget Group, Block,...
Decagon announced onboarding over 100 new global enterprise customers, including Avis Budget Group, Block, and Deutsche Telekom, coinciding with its January 2026 Series D.
funding-research →Jan 1, 2026
Partnership: ElevenLabs announced a strategic partnership with LTX to produce audio-to-video content.
funding-research →Jan 1, 2026
Partnership: ElevenLabs announced a partnership with LTX to produce audio-to-video content.
funding-research →Jan 28, 2026
Funding: Decagon raised a $250M Series D led by Coatue Management and Index Ventures at...
Decagon raised a $250M Series D led by Coatue Management and Index Ventures at a $4.5B valuation.
funding-research →Jan 28, 2026
Funding: Decagon raised a $250 million Series D on January 28, 2026, led by Coatue...
Decagon raised a $250 million Series D on January 28, 2026, led by Coatue Management and Index Ventures, at a $4.5 billion valuation.
funding-research →Feb 1, 2026
Product Launch: ElevenLabs released Expressive Mode in ElevenAgents, combining Eleven v3 Conversational TTS with a new...
ElevenLabs released Expressive Mode in ElevenAgents, combining Eleven v3 Conversational TTS with a new turn-taking system.
funding-research →Feb 1, 2026
Product Launch: ElevenLabs released Expressive Mode in ElevenAgents, featuring emotionally intelligent, context-aware text-to-speech with improved conversational...
ElevenLabs released Expressive Mode in ElevenAgents, featuring emotionally intelligent, context-aware text-to-speech with improved conversational turn-taking.
funding-research →Feb 4, 2026
Funding: ElevenLabs closed a $500 million Series D led by Sequoia Capital at an $11...
ElevenLabs closed a $500 million Series D led by Sequoia Capital at an $11 billion valuation, with a16z quadrupling and ICONIQ Growth tripling their investments and new investors including Lightspeed, Evantic Capital, and BOND.
funding-research →Feb 4, 2026
Funding: ElevenLabs raised $500 million in a Series D round at an $11 billion valuation,...
ElevenLabs raised $500 million in a Series D round at an $11 billion valuation, led by Sequoia Capital with partner Andrew Reed joining the board.
funding-research →Mar 1, 2026
Product Launch: ElevenLabs launched a Voice Restoration Initiative pledging $1 billion in free restoration voice tech...
ElevenLabs launched a Voice Restoration Initiative pledging $1 billion in free restoration voice tech to 1 million people with permanent voice loss.
funding-research →May 1, 2026
Funding: Sierra closed a $950M Series E led by Tiger Global and Google's GV, with...
Sierra closed a $950M Series E led by Tiger Global and Google's GV, with participation from Benchmark, Sequoia, and Greenoaks, at a $15.8B post-money valuation.
funding-research →May 1, 2026
Customer Win: Vapi won Amazon Ring's AI platform bid over 40 rivals, with Ring routing 100%...
Vapi won Amazon Ring's AI platform bid over 40 rivals, with Ring routing 100% of its inbound calls through Vapi's platform.
funding-research →May 1, 2026
Customer Win: Vapi won a large-scale deployment with Amazon Ring in May 2026, beating 40 rivals...
Vapi won a large-scale deployment with Amazon Ring in May 2026, beating 40 rivals to route 100% of Ring's inbound calls through its platform.
funding-research →May 4, 2026
Funding: Sierra raised a $950 million Series E round at a $15.8 billion post-money valuation,...
Sierra raised a $950 million Series E round at a $15.8 billion post-money valuation, led by Tiger Global and Google's GV with participation from Benchmark, Sequoia, and Greenoaks.
funding-research →May 5, 2026
Funding: ElevenLabs completed a third close of its Series D, adding institutional investors BlackRock, Wellington,...
ElevenLabs completed a third close of its Series D, adding institutional investors BlackRock, Wellington, D.E. Shaw, and Schroders, plus strategic investors NVIDIA (NVentures), Salesforce, Santander, KPN, and Deutsche Telekom.
funding-research →May 5, 2026
Funding: ElevenLabs' Series D third close added institutional investors BlackRock, Wellington, D.E. Shaw, and Schroders,...
ElevenLabs' Series D third close added institutional investors BlackRock, Wellington, D.E. Shaw, and Schroders, plus strategic investors NVIDIA (via NVentures), Salesforce, Santander, KPN, and Deutsche Telekom.
funding-research →May 11, 2026
Funding: Vapi raised a $50 million Series B led by Peak XV at an approximately...
Vapi raised a $50 million Series B led by Peak XV at an approximately $500 million post-money valuation, with participation from M12, Kleiner Perkins, and Bessemer Venture Partners.
funding-research →May 12, 2026
Funding: Vapi raised a $50 million Series B led by Peak XV Partners at a...
Vapi raised a $50 million Series B led by Peak XV Partners at a $500 million post-money valuation, with participation from M12 (Microsoft), Kleiner Perkins, and Bessemer Venture Partners, bringing total funding to $72 million.
funding-research →Jun 17, 2026
News Mention: Poland acquires stake in AI voice company ElevenLabs to boost tech hub ambitions -...
Poland acquires stake in AI voice company ElevenLabs to boost tech hub ambitions - Crypto Briefing <a href="https://news.google.com/rss/articles/CBMiakFVX3lxTE9DbVhlRE9NZXVSTlhsejBLaTItT0NjRHk1eVlqNV81TGZmLThoVXJ1Ulk2NHlqU1RLckR3RWdqVDREQ3RtT0M1ZzZoUTFCWlRaWGZFUk1Hb24yRGoyTzU0NHFlakVBY1Q0UkE?oc=5" target="_blank">Poland acquires stake in AI voice company ElevenLabs to boost tech hub ambitions</a> <font color="#6f6f6f">Crypto Briefing</font>
gnews-elevenlabs →Jul 2, 2026
News Mention: AI Voice Company ElevenLabs Aims for $22B Valuation via Tender Offer - Briefs Finance...
AI Voice Company ElevenLabs Aims for $22B Valuation via Tender Offer - Briefs Finance <a href="https://news.google.com/rss/articles/CBMikgFBVV95cUxNWm9zOXZXbnBzcWVySW1GSmkxVnJDdWNIS0NMb1hnOUlVNnBaenNQNHJCdGtxOGQyTzlDTGJ5Q01zUFJ3bHg3bkVUNVJhU3lVcHFLVGhfRFQ1clhuVXFqa0tibzBJTG5EMVdXR3UyVUNqa1RnRXZ5VXlZeUJzSFhnRURDOVE1MzVkQVZ5ZVM0LUhsdw?oc=5" target="_blank">AI Voice Company ElevenLabs Aims for $22B Valuation via Tender Offer</a> <font color="#6f6f6f">Briefs Finance</font>
gnews-elevenlabs →Jul 3, 2026
News Mention: ElevenLabs targets $22bn valuation with fresh share sale, reports say - Sifted <a href="https://news.google.com/rss/articles/CBMimgFBVV95cUxQc0pTaVFrVHZMNGZmcHFDcUNsblplSGM4RXVxYkZrb0JBbS1zMjk4YU5HQW1qcm1Ua1FrNF9aalYwTUNRSGl4M3ZTTFpkRjdmdHFpOV9NZEJhUnYxd0h6aHhmWGtiQms5aG5NaXVlMC0tczdjZm9xTl9xNXBxdUNNMlB2ZUJjOW5ubHVFNnVwRE5QVGNRQzhqcGVn?oc=5"...
ElevenLabs targets $22bn valuation with fresh share sale, reports say - Sifted <a href="https://news.google.com/rss/articles/CBMimgFBVV95cUxQc0pTaVFrVHZMNGZmcHFDcUNsblplSGM4RXVxYkZrb0JBbS1zMjk4YU5HQW1qcm1Ua1FrNF9aalYwTUNRSGl4M3ZTTFpkRjdmdHFpOV9NZEJhUnYxd0h6aHhmWGtiQms5aG5NaXVlMC0tczdjZm9xTl9xNXBxdUNNMlB2ZUJjOW5ubHVFNnVwRE5QVGNRQzhqcGVn?oc=5" target="_blank">ElevenLabs targets $22bn valuation with fresh share sale, reports say</a> <font color="#6f6f6f">Sifted</font>
gnews-elevenlabs →Jul 3, 2026
News Mention: ElevenLabs explores tender offer valuing AI voice startup at $22 billion- BBG - Investing.com...
ElevenLabs explores tender offer valuing AI voice startup at $22 billion- BBG - Investing.com <a href="https://news.google.com/rss/articles/CBMizAFBVV95cUxOMURSXzljcEh3U205cS1RNjNXWVc5NDdHMVMyRTl0UW52ak5kYmxodlVUWVIweVU0QWJEVkxTTVNRSWpVaW91TXdhNnNpdVRpVkVyMEl0dS1fUW5qaDNlLUlzZHp6emV2UEE4SWc2YWxXSFl2WHE4WTV0Vnltbk1XakVONmx6TWNoNzc5cm9IWmVOaHNic0ZXWjREb01ZWlloaWlsNkZGa3lSQTFQdFNjVGNSLXJRM3FGVzZyWHpaa3NtVkM3R2tPNFBVNmE?oc=5" target="_blank">ElevenLabs explores tender offer valuing AI voice startup at $22 billion- BBG</a> <font color="#6f6f6f">Investing.com</font>
gnews-elevenlabs →Jul 3, 2026
News Mention: ElevenLabs plans share sale in September at USD 22 bln valuation - report -...
ElevenLabs plans share sale in September at USD 22 bln valuation - report - Telecompaper <a href="https://news.google.com/rss/articles/CBMitAFBVV95cUxPWHlXaHJPZ0lFV0YwSlB6NzNjanVyazdGcmRJSHZoV2NXRTZ5UE1CTHFCVzNTczBPMFNQcTkwWFZCdkRpbFpSLUwxNHpfTHJJc2gzOU1jN216aGNYb1ZBbFpHdjBWR3N4bUc3dmozcy14YW9vZGFydG9vYWg0bVV1WXJ0Y1F2N0tIa0t5cWdNcmVIQy1yQlBiY3JWSnZFX2dEVktQWHlLWnU0MnkxeU9TRFhWenc?oc=5" target="_blank">ElevenLabs plans share sale in September at USD 22 bln valuation - report</a> <font color="#6f6f6f">Telecompaper</font>
gnews-elevenlabs →Jul 3, 2026
News Mention: Eleven Labs Revenue 2026: $500M ARR, $11B Valuation - GetLatka <a href="https://news.google.com/rss/articles/CBMiV0FVX3lxTFBOcHhPNEY5Nnd2d2c0OEhVaWc2QTlTNG45TmJIRmFoamJ3ZmZseU91aTNiT0o2aGZzUGdldFc1N1QydmdXamtOaUNDR1Q1UzQ5bHVUYjJfRQ?oc=5" target="_blank">Eleven Labs...
Eleven Labs Revenue 2026: $500M ARR, $11B Valuation - GetLatka <a href="https://news.google.com/rss/articles/CBMiV0FVX3lxTFBOcHhPNEY5Nnd2d2c0OEhVaWc2QTlTNG45TmJIRmFoamJ3ZmZseU91aTNiT0o2aGZzUGdldFc1N1QydmdXamtOaUNDR1Q1UzQ5bHVUYjJfRQ?oc=5" target="_blank">Eleven Labs Revenue 2026: $500M ARR, $11B Valuation</a> <font color="#6f6f6f">GetLatka</font>
gnews-elevenlabs →Jul 3, 2026
News Mention: ElevenLabs is in talks for a $22B valuation, doubling its price tag five months...
ElevenLabs is in talks for a $22B valuation, doubling its price tag five months after its last raise: report - Tech Funding News <a href="https://news.google.com/rss/articles/CBMixgFBVV95cUxPal9rbXlFX0dZVHJJUUsxM0lHaFY4LXJWOUNORTBIRVJrQWFZOFhnQkYzY0ZMVTFEWFl5RlZYSFFVeVdrZU5wRU1oUjJiMnBCbzRwSjRpOTZkWkJsaFllQndxSlp5aUozdm12ZTZUOVdHMjQ4UmY1SHhLUUYzNDFRYmZhSTFVMDhWSmZYT3A1cTZnTGJZc2hrU2tUNm43WnJjUTlHVlNDd1RCUGIyZFVfQ1B6MkJoU2tiSVZSM0RRTGU1LWpKbXc?oc=5" target="_blank">ElevenLabs is in talks for a $22B valuation, doubling its price tag five months after its last raise: report</a> <font color="#6f6f6f">Tech Funding News</font>
gnews-elevenlabs →Jul 4, 2026
News Mention: ElevenLabs doubles valuation to $2.2 billion - jawlah.co <a href="https://news.google.com/rss/articles/CBMiP0FVX3lxTE1Cam81WDdFWjVzNWJNLUVsM2tMbXhEQTFjYlVpLWdsTnlDZ0VtdDZTZTRCaHhXcXdTZ3FrN0hKQQ?oc=5" target="_blank">ElevenLabs doubles valuation to...
ElevenLabs doubles valuation to $2.2 billion - jawlah.co <a href="https://news.google.com/rss/articles/CBMiP0FVX3lxTE1Cam81WDdFWjVzNWJNLUVsM2tMbXhEQTFjYlVpLWdsTnlDZ0VtdDZTZTRCaHhXcXdTZ3FrN0hKQQ?oc=5" target="_blank">ElevenLabs doubles valuation to $2.2 billion</a> <font color="#6f6f6f">jawlah.co</font>
gnews-elevenlabs →Jul 5, 2026
News Mention: ElevenLabs Valuation Doubles to $22 Billion: Voice Cloning Reaches Its Biggest Test - Tech...
ElevenLabs Valuation Doubles to $22 Billion: Voice Cloning Reaches Its Biggest Test - Tech Times <a href="https://news.google.com/rss/articles/CBMizgFBVV95cUxNOXJ3SWttQWRkRjRWZ2RDN3dkN3g5MWJWdEstMmJUekNlQ2FMc05hdF91U3NpNy1NaEx2Wnp4eXJBcmpldnlvTXFHMDAwaEZJb282TnVTTFZiSEE0bXV3Nk1ZTUlHRnppMkdxYmo0MkJiRU1xVE9DZ29EV1dNbGMtVldZSmlaWXE4MlRWODV6bTViSWlERUJHQkItcURIMXRPMW0yUDZ6dGlrM3dESXdGQWo1aVpOZVFCNEZvMEowdGI4OVhlVjBmSTMtdmZmQQ?oc=5" target="_blank">ElevenLabs Valuation Doubles to $22 Billion: Voice Cloning Reaches Its Biggest Test</a> <font color="#6f6f6f">Tech Times</font>
gnews-elevenlabs →Jul 28, 2026
News Mention: DXC Plans to Embed Voice AI Agents in Enterprise Workflows - Stock Titan <a...
DXC Plans to Embed Voice AI Agents in Enterprise Workflows - Stock Titan <a href="https://news.google.com/rss/articles/CBMiswFBVV95cUxOVzRtdjBlc0J5MkR2MjFCazRKSHpJdGpfcGozV3dTcU1VNEtJTG44MjczYnFjOU9DdHF1dXJJMUZmVVNvYUdBWWM5dlNFS1FDLXloZW5iWFJ2RVdsY0R2S252cE9yNjMzbWpWUEViQzlqU1Y0akZuQTRTaDZuQWFYSk1ZRC04ajZKWFJqWU9YSUk1bmRxS2t4VXRKanhlTnR5Z2pRLThTbkFZMXFJZk1xcUY1VQ?oc=5" target="_blank">DXC Plans to Embed Voice AI Agents in Enterprise Workflows</a> <font color="#6f6f6f">Stock Titan</font>
gnews-elevenlabs →
Milestones merged from 0 curated events, 0 verified facts (with observed dates), and 46 business signals from the last 24 months. Deduped by date + label; curated entries take precedence.
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