AI21 Labs vs Elyza

AI21 Labs has a disclosed valuation of $1.4B, while Elyza'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 Elyza's $30M — a gap of $606M. Combined, the two companies have completed 9 known funding rounds.

AI21 Labs holds the higher Awaira Score at 72/100, compared to Elyza's 45/100. The Awaira Score is a composite metric factoring in valuation, funding, stage, team size, and market presence — a 27-point gap that reflects meaningful differences in scale or traction.

AI21 Labs was founded by Yoav Shoham in 2017. Elyza was founded by Tetsuya Yamada in 2019. 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. Elyza: Elyza developed Japanese large language models and enterprise AI applications, building on top of open-source models including Llama to create fine-tuned Japanese language variants with high Japanese language quality, and offering enterprise AI services using its Japanese LLM capabilities for customer service, document processing, and content generation applications. The Tokyo company focused on the specific characteristics of Japanese language including script mixing, honorific speech levels, and domain-specific vocabulary.\n\nThe company raised approximately $30 million in venture funding before being acquired by KDDI, the Japanese telecommunications operator, in 2024. The acquisition gave KDDI an in-house Japanese AI capability to deploy across its telecommunications services and enterprise AI offerings for KDDI business customers, as Japanese telecoms operators compete to add AI features to their enterprise service portfolios.\n\nElyza operated in the Japanese LLM market alongside CyberAgent AI Lab, NTT AI research, and the open-source Japanese AI community centred around the National Institute of Informatics. The acquisition by KDDI reflects the pattern of large Japanese corporations acquiring AI startups to accelerate internal AI capability development rather than building Japanese-language AI expertise from scratch. Japanese LLM development requires significant training data in Japanese and expertise in Japanese language evaluation that international foundation model providers building Japanese language versions of their models must develop separately.

AI21 Labs was founded first in 2017, giving it 2 years of additional market experience. Elyza was founded later in 2019. In AI, even a year or two of head start can translate into significantly more training data, customer relationships, and institutional knowledge.

AI21 Labs has approximately 250 employees, while Elyza has approximately 1-50. 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 Elyza 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.