AI21 Labs
Israeli frontier AI lab; first commercial Mamba-Transformer hybrid (Jamba); enterprise-focused with Wordtune consumer brand
SectorsAI Software
Market Metrics
Valuation (Series D May 2025)
$1.4B
Series D at roughly the Nov 2023 valuation
Annualized Revenue (2025)
~$50M
enterprise Jamba + Maestro + Wordtune; small relative to US frontier peers
Jamba Architecture
Mamba-Transformer hybrid (256K context)
First commercial Mamba-Transformer hybrid model (Mar 2024); long-context efficiency
Founder Pedigree
Amnon Shashua (Mobileye + OrCam founder)
Mobileye sold to Intel for $15B in 2017; founder track record drives Israeli capital convergence
Updated at 2026-Q1
Funding History
Total raised: ~$636M+ · Latest valuation: $1.4B
| Round | Date | Amount | Valuation | Key Investors |
|---|---|---|---|---|
| Seed / Early | 2017-2018 | ~$9.5M | - | PitangoBen Horowitz |
| Series A | 2019 | $25M | - | PitangoWalden CatalystAhren Innovation Capital |
| Series B | Jul 2022 | $64M | $664M | Walden Catalyst (lead)PitangoTPY CapitalSCB10X+1 more |
| Series C | Nov 2023 | $208M | $1.4B | NVIDIAWalden CatalystPitangoSCB10X+2 more |
| Series C Extension | Aug 2024 | $53M | - | NVIDIAGoogleWalden Catalyst |
| Series D | May 2025 | $300M | ~$1.4B | NVIDIA (lead)Alphabet / Googleexisting investors |
Updated at 2026-Q1
Product Specifications
| Product | Type | Status |
|---|---|---|
| Jamba 1.5 Large + Mini | Mamba-Transformer hybrid with 256K context | GA (open weights) |
| AI21 Studio | Developer API for Jamba + Jurassic models | GA |
| Maestro | Multi-agent orchestration product for enterprise workflows | GA |
| Wordtune | Consumer writing-assistant brand (10M+ users) | GA |
| Contextual Answers | Enterprise RAG product with 256K-context Jamba | GA |
Updated at 2026-Q1
Partnerships & Investors
NVIDIAStrategic / Investor
Series C + D lead investor; Jamba models distributed via NVIDIA NIM microservices; reported acquisition interest (Dec 2025).
Google / AlphabetStrategic / Investor
Series C extension + Series D investor; Vertex AI distribution path.
Amazon BedrockDistribution
Jamba models available via AWS Bedrock; enterprise cloud distribution.
Walden CatalystLead Investor
Series B + C lead; deep Israeli + global deep-tech thesis.
SCB10X (Siam Commercial Bank Thailand)Strategic
Series B + C strategic investor; Asia-Pacific enterprise distribution.
Comcast / NBCUniversalStrategic
Series B + C investor; media-industry enterprise customer signal.
Updated at 2026-Q1
Key Milestones
2017
Company Founded
Yoav Shoham (Stanford emeritus), Ori Goshen, and Amnon Shashua (Mobileye founder, OrCam founder) launch AI21 in Tel Aviv
2019
AI21 Studio Launch
Developer platform with Jurassic-1 / Jurassic-2 proprietary models; one of the earliest non-OpenAI LLM APIs
Oct 2020
Wordtune Launch
Consumer writing assistant; reaches 10M+ users by 2024
Jul 2022
Series B at $664M
Walden Catalyst leads $64M; AI21 establishes itself as Israel's flagship AI company
Nov 2023
Series C at $1.4B + NVIDIA Investment
$208M raise with NVIDIA + Google as strategic investors; Israeli sovereign-AI thesis
Mar 2024
Jamba Released (First Commercial Mamba Hybrid)
First commercial Mamba-Transformer hybrid architecture model; 256K context window, open-weights
2025
Maestro Orchestrator GA
Multi-agent orchestration product layered on top of Jamba models; targets agentic enterprise workflows
May 2025
Series D at ~$1.4B
$300M led by NVIDIA and Alphabet, at roughly the prior valuation; lifts total funding to ~$636M
Dec 2025
NVIDIA Acquisition Report
NVIDIA reportedly explored acquiring AI21 for ~$3B (reported, not confirmed)
Updated at 2026-Q1