AI21 Labs vs Sakana AI

AI21 Labs has a disclosed valuation of $1.4B, while Sakana AI'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 Sakana AI's $200M — a gap of $436M. Combined, the two companies have completed 9 known funding rounds.

AI21 Labs holds the higher Awaira Score at 72/100, compared to Sakana AI's 65/100. The Awaira Score is a composite metric factoring in valuation, funding, stage, team size, and market presence — a 7-point gap that reflects meaningful differences in scale or traction.

AI21 Labs was founded by Yoav Shoham in 2017. Sakana AI was founded by David Ha in 2023. 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. Sakana AI: Sakana AI develops foundation models using nature-inspired evolutionary and collective intelligence approaches to AI model development, exploring alternatives to the dominant paradigm of scaling single large models toward architectures that combine multiple smaller models or that use evolutionary algorithms to discover model configurations. The Tokyo company was founded by David Ha, former Research Director at Google DeepMind, bringing frontier AI research leadership and international AI community connections to Japan AI startup ecosystem.\n\nThe company raised approximately $200 million in funding from investors including New Enterprise Associates, Lux Capital, and Khosla Ventures, reflecting global investor confidence in the founding team research pedigree. Sakana AI has published research on evolutionary model merge approaches that generate new model capabilities by combining weights from existing trained models without additional training, attracting significant attention from the global AI research community for the technical novelty and practical efficiency of the approach.\n\nSakana AI occupies a distinctive position in the Japanese AI ecosystem as a research-first foundation model lab with global ambitions, combining international founding team credentials with Japan as a base for building AI capabilities outside the US-China AI race dynamic. The company research on alternative model development approaches positions it to contribute fundamental methodological innovations that could influence the broader AI field rather than competing purely on compute scale with OpenAI and Anthropic.

AI21 Labs was founded first in 2017, giving it 6 years of additional market experience. Sakana AI was founded later in 2023. 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 Sakana AI 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 Sakana AI 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.