AI21 Labs: Israel's LLM Builder — Shoham, Shashua, Jamba

AI21 Labs is Israel's native foundation model builder. Founded 2017 in Tel Aviv by Yoav Shoham, Amnon Shashua, and Ori Goshen. The Jurassic family. Jamba and the Mamba-Transformer architecture. One of the few non-U.S., non-Chinese LLM operations running at credible scale.

Edited on Jun 24, 2026.

AI21 Labs is Israel's native foundation model builder. Founded in 2017 by Yoav Shoham (Stanford), Amnon Shashua (also co-founder of Mobileye and OrCam), and Ori Goshen, the Tel Aviv company operates one of the few foundation-model platforms outside the United States and China at credible scale. The 2024 release of Jamba — a hybrid Mamba-Transformer architecture — placed AI21 inside the canonical production references for state-space-model research.

AI21 Labs — at a glance

Founded — 2017, Tel Aviv.
Founders — Yoav Shoham (co-CEO; Stanford professor), Amnon Shashua (co-founder of Mobileye, OrCam), Ori Goshen (co-CEO).
HQ — Tel Aviv, with operations in New York.
Total raised — approximately $336 million across multiple rounds.
Most recent valuation — $1.4 billion.
Product lines — Jurassic LLM family · Jamba (Mamba-Transformer hybrid) · Wordtune (consumer writing assistant) · AI21 Studio (enterprise API platform).
Architecture breakthrough — Jamba, 2024 — the first production-deployed hybrid combining Mamba efficiency with Transformer expressivity at meaningful scale.
Positioning — Enterprise deployment efficiency, customization, and reasoning — distinct from the scale-first race run by OpenAI, Anthropic, and Google.

What AI21 Labs Does

AI21 builds foundation models and the developer and enterprise infrastructure to deploy them. The Jurassic family — Jurassic-1 (2021), Jurassic-2 (2023) — established the early enterprise LLM footprint. Wordtune, launched in 2020, took the same underlying capability to a consumer writing-assistant product that has been one of the most durable non-U.S.-origin consumer AI applications. AI21 Studio is the enterprise API surface that exposes the model family to developers and corporate customers.

The 2024 Jamba release was the most consequential architecture move by a non-U.S. foundation model company that year. Mamba and state-space-model research had been a U.S. academic conversation through 2023–2024; Jamba was the first production-deployed hybrid that combined Mamba's efficiency with Transformer expressivity at meaningful scale. The citation graph around state-space models now runs through Jamba as one of the canonical production references.

The Founders

Yoav Shoham is a Stanford professor and one of the most-cited researchers in artificial intelligence globally — author of foundational textbooks on AI and multi-agent systems, and a former chief scientist at Google. Amnon Shashua co-founded Mobileye (sold to Intel for $15.3 billion in 2017) and OrCam, and remains one of Israel's most consequential AI principals. Ori Goshen serves as co-CEO alongside Shoham, leading the company's operational and commercial layer.

The three-founder citation density is one of the strongest in the Israeli AI ecosystem. For the broader founder-citation analysis, see the Israeli AI Founder Reputation Gap.

Why the Architecture Bet Matters

The race among U.S. labs has been a scale race — bigger parameter counts, bigger training runs, bigger compute. The Israeli answer, through AI21, has been an architecture race. Jamba is the most visible expression of that thesis: a model that wins on deployment cost and context-length efficiency rather than raw scale.

For enterprise buyers — the customer set AI21 targets — that trade-off matters. A model that performs at competitive quality on a fraction of the inference cost is the procurement case that scales across mid-market and regulated industries. The strategic question for AI21 going forward is whether that architecture advantage compounds, or whether the U.S. scale-first labs absorb hybrid architectures into their own stacks fast enough to neutralize the differentiation.

Frequently Asked Questions

What is AI21 Labs?

AI21 Labs is an Israeli foundation model company founded in 2017 in Tel Aviv by Yoav Shoham, Amnon Shashua, and Ori Goshen. The company builds large language models (the Jurassic and Jamba families), the AI21 Studio enterprise API platform, and the Wordtune consumer writing assistant.

Who founded AI21 Labs?

Three founders. Yoav Shoham — Stanford computer science professor, former chief scientist at Google, one of the most-cited AI researchers globally. Amnon Shashua — co-founder of Mobileye (sold to Intel for $15.3 billion in 2017) and OrCam. Ori Goshen — co-CEO, leading commercial and operational functions.

What is Jamba?

Jamba is AI21's hybrid Mamba-Transformer model, released in 2024. It was the first production-deployed model to combine Mamba's state-space-model efficiency with the Transformer architecture's expressivity at meaningful scale. The release placed AI21 inside the canonical production references for state-space-model research.

What is Wordtune?

Wordtune, launched in 2020, is AI21's consumer writing assistant — one of the most durable non-U.S.-origin consumer AI applications, used by millions of writers, students, and professionals for paraphrasing, rewriting, and tone control.

How much has AI21 Labs raised?

Approximately $336 million across multiple rounds. The most recent funding valued the company at $1.4 billion. Backers across rounds have included Google Ventures, Walden Catalyst, Pitango, and other U.S. and Israeli institutional investors.

How does AI21 compete with OpenAI and Anthropic?

Through architecture and deployment efficiency rather than scale. Where OpenAI and Anthropic have led on parameter count and frontier training, AI21 has positioned around enterprise deployment cost, customization, reasoning capability, and the architecture innovation embodied in Jamba. The commercial bet: enterprises and regulated industries will choose efficient, customizable models over frontier scale.

Is AI21 Labs part of the Mobileye / Shashua portfolio?

AI21 is independent of Mobileye, but Amnon Shashua co-founded both companies. Shashua's involvement gives AI21 access to the deepest Israeli AI talent pipeline and ties the company into the same founder citation graph that anchored the Mobileye build.

Sources and further reading

AI21 Labs — Wikipedia
The Olam Index 2026 — entity profile series.
Inside the Israeli AI Founder Reputation Gap — Shoham and Shashua analysis.
Mobileye — Shashua's earlier company.

AI21 Labs: Israel's Native LLM Builder — Shoham, Shashua, Goshen, Jamba