Founder Intelligence
Noam Shazeer
The Transformer showed that you could replace recurrence with self-attention. Scaling that simple architectural principle gave us general language understanding.
- Role
- Co-Founder & AI Pioneer
- Company
- Character.AI
- Country
- United States
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Overview
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Noam Shazeer is one of the most consequential computer scientists in modern artificial intelligence history. A former Google Distinguished Software Engineer and co-founder of Character.AI, Shazeer co-invented the Transformer architecture and pioneered Mixture-of-Experts (MoE) scaling.
Why it matters
Shazeer is the intellectual architect behind the core mathematical innovations—Transformers, SwiGLU activations, Multi-Query Attention, and Mixture-of-Experts—that power virtually every state-of-the-art foundation model operating today.
Editorial insight
Noam Shazeer is a publicly documented leader at Character.AI.
Career & Timeline
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Google Career (2000–2021) & Architectural Breakthroughs
Shazeer joined Google in 2000 as one of its earliest engineers. Over 21 years, Shazeer authored foundational machine learning breakthroughs: he co-invented the Transformer in 2017 ('Attention Is All You Need'), created the first practical sparsely-gated Mixture-of-Experts layers in 2017, and built Mesh-TensorFlow for distributed supercomputing.
Founding Character.AI
In 2021, Shazeer departed Google with Daniel De Freitas to found Character.AI, building custom LLM serving infrastructure capable of handling billions of daily conversational turns with unmatched cost efficiency.
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Character.AI — Enterprise AI platform
Explore Character.AI — Enterprise AI platform by Character.AI. Verified AI product intelligence covering core capabilities, Enterprise Software use…
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FAQ
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Who is Noam Shazeer?
Noam Shazeer is an American computer scientist, machine learning pioneer, and entrepreneur who co-founded Character.AI and co-invented the Transformer neural network architecture at Google.
What were Noam Shazeer's historic contributions at Google?
Shazeer spent over two decades at Google as a Distinguished Software Engineer, co-authoring 'Attention Is All You Need' (Transformer), inventing Mixture-of-Experts (MoE) scaling, creating the Mesh-TensorFlow distributed system, and leading the LaMDA/Meena conversational project.
What is Noam Shazeer's current role?
In 2024, after building Character.AI to tens of millions of users, Shazeer rejoined Google as a technical research leader on the Gemini and DeepMind teams through a landmark licensing and talent partnership.
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