AI companions for imagination, learning, and connection
HQ: Menlo Park, CA, United States | Founded: 2021 | Employees: 110-140 | Stage: Late Stage VC / Post-Google Licensing | Website: https://character.ai
Character.AI is a consumer AI companion platform founded in November 2021 by Noam Shazeer and Daniel De Freitas, the former Google engineers who led LaMDA and co-authored the transformer architecture that underpins modern chatbots. Headquartered in Menlo Park, CA, the company lets users create, customize, and chat with AI characters — original personas, fictional worlds, helpers for learning and roleplay — via web and mobile apps. By early 2023 the service approached 100 million monthly site visits on a 22-person team, and its community has created millions of characters driving billions of messages and industry-leading session length for a consumer AI product.
The company raised $193M including a $150M Series A at $1B valuation led by Andreessen Horowitz in March 2023 with participation from Nat Friedman, Elad Gil, A.Capital, SV Angel and Bond. In August 2024 Google entered a $2.7B non-exclusive licensing agreement for Character.AI technology and hired founders Shazeer and De Freitas plus ~30 researchers into Google DeepMind, paying investors ~$88/share (2.5x) without a formal acquisition. Post-deal Character.AI retains an ~110-person team focused on consumer product, shifting from pre-training frontier models to personalization, memory, voice and safety on top of open models including Meta Llama, monetized via freemium access and c.ai+ at $9.99/month.
Character.AI pioneered consumer AI companions, scaling to 20M+ MAU and near 100M monthly site visits on the strength of user-created characters and long-form engagement. The $150M Series A at $1B (a16z, March 2023) was followed by a defining $2.7B non-exclusive licensing and talent deal with Google in August 2024 — founders Noam Shazeer and Daniel De Freitas plus ~30 researchers returned to Google DeepMind, investors were cashed out at ~2.5x, and Character.AI pivoted from training frontier models to building personalized consumer products on open models with a $9.99/mo c.ai+ subscription now driving ~$20M revenue.
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