AI21 Labs vs Kakao Brain

AI21 Labs has a disclosed valuation of $1.4B, while Kakao Brain's valuation is not publicly available, making a direct size comparison difficult. AI21 Labs employs 250 people.

AI21 Labs has raised more in total funding at $636M, compared to Kakao Brain's $100M — a gap of $536M. Combined, the two companies have completed 9 known funding rounds.

AI21 Labs holds the higher Awaira Score at 72/100, compared to Kakao Brain's 58/100. The Awaira Score is a composite metric factoring in valuation, funding, stage, team size, and market presence — a 14-point gap that reflects meaningful differences in scale or traction.

AI21 Labs was founded by Yoav Shoham in 2017. Kakao Brain was founded by Kim Il-doo in 2017. Visit each company's profile on Awaira for a full founder biography.

AI21 Labs: AI21 Labs is an Israeli foundation model company founded in 2017 that develops large language models and AI systems for enterprise applications. The company is best known for its Jurassic language model family, which powers various natural language processing tasks including text generation, summarization, and question-answering. AI21 Labs operates through both direct API access and integration with cloud platforms, serving customers across multiple industries. The company has positioned itself in the competitive foundation models landscape alongside OpenAI, Anthropic, and other providers, distinguishing itself through a focus on instruction-following capabilities and multilingual support. AI21 Labs has secured $636 million in total funding and achieved a $1.4 billion valuation, reflecting investor confidence in its technology and market approach. The company operates primarily through its cloud-based AI platform, offering researchers and developers access to its models. It has demonstrated growth through partnerships and enterprise adoption, though facing intense competition in the rapidly consolidating foundation models sector. AI21 Labs remains in Series D funding stage, indicating it has not yet pursued initial public offering. The company employs researchers with backgrounds in academia and industry, maintaining focus on advancing core language model capabilities and exploring commercial applications across sectors including content generation, customer service, and information retrieval. AI21 Labs combines deep research in language models with enterprise-focused API infrastructure to compete against larger foundation model providers. Kakao Brain: Kakao Brain is the AI research and foundation model division of Kakao Corp, the dominant Korean internet and messaging platform company, developing large language models including KoGPT for Korean language, the Karlo text-to-image generation model, and AI infrastructure for deploying AI capabilities across the Kakao platform ecosystem spanning KakaoTalk messaging, KakaoPay, and Kakao Mobility. The Seongnam company operates as a corporate AI research unit with internal funding from Kakao Corp.\n\nFunded internally through Kakao Corp with estimated investment exceeding $100 million across research infrastructure, compute, and personnel, Kakao Brain develops AI capabilities that are deployed to the KakaoTalk base of over 50 million monthly active users in Korea and across Kakao enterprise and government client deployments. The unit has released open-weight Korean language models through the Hugging Face platform, contributing to the Korean open-source AI ecosystem.\n\nKakao Brain competes in Korean AI research and model deployment with Naver AI, Samsung AI, and LG AI Research, as well as international AI labs whose models must be adapted for Korean language performance. Its integration with KakaoTalk provides a unique distribution mechanism for consumer AI features, as KakaoTalk functions as South Korea primary social communication platform and an essential interface for daily life services from banking to government. The corporate research structure gives Kakao Brain resources and stability but limits the commercial independence and equity-based talent attraction that independent foundation model startups use to recruit researchers.

Both AI21 Labs and Kakao Brain were founded in the same year — 2017. Despite sharing a founding year, they may have launched at different times within that year, which can matter in fast-moving AI markets.

AI21 Labs has approximately 250 employees, while Kakao Brain has approximately 100-500. A larger team often signals higher revenue or venture backing, but in AI, smaller teams are increasingly capable of building at scale.

Yes, AI21 Labs and Kakao Brain are direct competitors — both operate in the Foundation Models space and likely target overlapping customer segments. This comparison is especially relevant for buyers evaluating both platforms.