AI infrastructure deals keep accelerating as model-development costs climb into the billions and only a handful of players can foot the bill. Last year Nvidia (NASDAQ:NVDA | NVDA Price Prediction) walked away from advanced talks to buy Israeli startup AI21 Labs at a $2 billion to $3 billion valuation. Now another buyer has stepped in.
Reports say Nebius Group (NASDAQ:NBIS) is in discussions to acquire the company, and the news sent its stock soaring. Investors who own the stock or watch the AI-cloud space want one clear answer: does this move turn Nebius into a full-stack contender, or is it just another high-priced gamble in a sector already priced for perfection?
The Rumored Deal’s Details
The Information reported Wednesday that Nebius entered talks to buy AI21 Labs, months after Nvidia’s negotiations collapsed. Founded in 2017, AI21 once ranked among the early leaders in large language models. It has since pivoted to enterprise tools such as the Maestro platform and a new reasoning model after discontinuing its consumer product Wordtune. Annual revenue sits at roughly $50 million. Its last disclosed valuation was $1.4 billion in 2023; Nvidia’s earlier interest reportedly reached $2 billion to $3 billion. Sources told The Information that Nvidia’s focus centered more on talent than on AI21’s commercial scale.
Nebius, by contrast, brings a different playbook. It acquired Israeli startup Tavily for up to $400 million earlier this year to strengthen its AI-agent platform. Adding AI21’s language-model expertise would let Nebius offer customers a more complete stack for building and operating agents. In short, the deal would move Nebius beyond renting GPUs into higher-margin software and services.
Nebius’s Expansion Math
Nebius already posts numbers that turn heads. Trailing 12-month revenue reached $529.8 million, with the most recent quarter delivering 500% year-over-year growth. Gross profit stands at $363.6 million. The company guided 2026 revenue between $3.0 billion and $3.4 billion with adjusted EBITDA margins near 40%. Cash on hand totals $3.68 billion, enough to help fund the $16 billion to $20 billion capital-expenditure plan for new data centers. Debt sits at $4.89 billion, producing a debt-to-equity ratio of 105.96%, yet the balance sheet still shows a current ratio of 3.08.
Compare that to the broader AI-infrastructure group. While many traditional cloud providers post single-digit or low-double-digit growth, Nebius’s 500% quarterly jump outpaces most public peers. Over the past year, Nebius’s stock generated a 601% return, also dwarfing the sector average.
Its trailing P/E ratio lands near 280, unquestionably high, but in line with other hyper-growth names that trade on future capacity rather than current earnings. Net income for the trailing 12 months came in at $29 million, or $0.11 per diluted share, even as EBITDA remains negative at $192.2 million because of aggressive depreciation on new assets. Levered free cash flow shows a $3.61 billion outflow, the direct result of the build-out that management says will connect 800 megawatts to 1 gigawatt of new capacity in 2026 alone.
Risks to the Growth Story
That said, the valuation leaves little room for error. At a price of $145 in noon trading today, the market cap sits above $37 billion. Any delay in closing the AI21 deal — or any hiccup in the $3 billion-plus 2026 revenue target — could pressure the multiple. Operating margin is negative 103%, and heavy capex means negative free cash flow will likely continue for at least several more quarters.
Granted, Nebius carries Nvidia backing and live hyperscaler contracts, including Meta Platforms (NASDAQ:META), which reduces some execution risk. Still, smart investors know that 280 times earnings demands flawless delivery.
Key Takeaway
Ultimately, the rumored AI21 Labs acquisition gives Nebius a clear path to full-stack AI services that pure-play GPU renters lack. The $50 million revenue target at AI21 is modest, yet the 200-person research team and Maestro platform could accelerate Nebius’s software attach rate and push it closer to that $7 billion to $9 billion medium-term ARR goal.
For retail investors, the move looks accretive if the deal closes at a reasonable price and capacity ramps on schedule. Watch the next earnings release for updated guidance and any mention of the transaction. In any case, Nebius has shown it can turn infrastructure scale into revenue growth faster than most competitors. Those comfortable with the volatility — and the capex bill — may find this rumor the latest reason to keep the name on their watch list.
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