BigBear.ai vs. CoreWeave: Evaluating the Better Artificial Intelligence Stock to Buy for 2026

As artificial intelligence shifts from experimentation to execution, BigBear.ai (NYSE:BBAI) and CoreWeave (NASDAQ:CRWV) offer two different ways to play the trend. Choosing the right one requires weighing software expertise against infrastructure scale.

BigBear.ai focuses on decision-intelligence software used by government and industrial clients to navigate complex data. CoreWeave provides the heavy-duty computing power needed for massive AI models. While both companies operate in the same broader ecosystem, their business models and financial profiles diverge significantly for investors looking toward the future.

The case for BigBear.ai

BigBear.ai provides decision-intelligence software used by national security and supply chain organizations to navigate complex data environments. In its latest annual report, filed for the year ended December 31, 2025, the company highlighted its role within the broader landscape of tech stocks. However, it generates 51% of its revenue from just a few customers, and this concentration adds a layer of risk to the business.

Financial performance in 2025 showed significant pressure as revenue reached $127.7 million, a decline of 19.3% from the prior year. The company reported a net loss of $293.9 million, resulting in a net margin of negative 230.2%. This net margin indicates how much each dollar of sales is lost after accounting for all operating and non-operating expenses.

As of its December 2025 balance sheet, the company maintains a current ratio of 1.8x, which measures its ability to cover short-term liabilities with current assets. The debt-to-equity ratio, which compares total debt to shareholder equity, is zero. Free cash flow, representing the cash remaining after the company pays for its operations and capital equipment, for the 2025 fiscal year (FY) was negative $46.3 million.

The case for CoreWeave

CoreWeave operates as a specialized cloud provider designed to scale and accelerate the development of generative AI models. For the year ended December 31, 2025, Microsoft (NASDAQ:MSFT) accounted for approximately 67% of total revenue. Customer concentration like this adds a layer of risk to the business, though the company has recently signed long-term service agreements with other major technology firms.

The company experienced massive growth in FY 2025, with revenue reaching $5.1 billion, representing a jump of 167.9% year over year. Despite the surging top line, the company reported a net loss of $1.2 billion for the period. Its net margin was negative 22.7%, reflecting the high costs of rapidly expanding its global data center footprint.

As of its December 2025 balance sheet, the debt-to-equity ratio is 8.9x and the current ratio is 0.5x. Free cash flow was negative $7.3 billion. Note that stock-based compensation. (SBC) represented 20.6% of operating cash flow, which inflates reported cash generation since SBC is a non-cash expense added back in the cash flow statement.

Risk profile comparison

BigBear.ai faces significant risks involving revenue concentration with a limited number of government and commercial customers. The company is currently managing ongoing litigation related to past accounting errors and financial restatements. It also faces the potential for future impairment of goodwill and intangible assets following recent non-cash charges.

CoreWeave is highly dependent on Microsoft for the majority of its revenue, creating substantial concentration risk. The company also faces heavy capital expenditure requirements and high levels of indebtedness as it scales its operations. Furthermore, it is defending a federal securities class action lawsuit alleging it overstated its ability to scale and downplayed supply chain delays.

Valuation comparison

CoreWeave trades at a lower P/S ratio than its peer. Neither have a Forward P/E since they are not expected to be profitable any time soon.

Valuation metrics sourced from Financial Modeling Prep (FMP) and may differ from other data providers.

Which stock would I buy in 2026?

BigBear.ai and CoreWeave offer different ways to gain exposure to the hot AI market, with the former focused primarily on government contracts while the latter is scooping up market demand for AI infrastructure. Of the two, I would invest in CoreWeave.

The reason is straightforward. AI adoption is a growing necessity for businesses and governments. AI requires massive computing power, and CoreWeave provides this. As proof of its success capturing this market, look at the company's sales, which are accelerating. In the second quarter of 2026, revenue reached $2.6 billion, representing incredible 112% year-over-year growth. It forecasted full-year sales to hit at least $12.4 billion, more than double the $5.1 billion achieved in 2025.

CoreWeave is a risky bet, however. As last year's debt-to-equity ratio of 8.9x indicates, it holds a lot of debt to fund its AI infrastructure expansion, and it's adding more in 2026. With uncertainty around interest rates, this is a dangerous position to be in if it does not continue to grow revenue.

BigBear.ai does not have the debt burden of CoreWeave, but its software solutions also don't have the built-in economic moat of AI infrastructure, which is too expensive to easily spin up. Moreover, BigBear.ai delivered 13% year-over-year growth to $36.7 million in Q2, but only thanks to the acquisition of Ask Sage. Also, its share price valuation is almost double CoreWeave's. These downsides add to the reason why CoreWeave is the better AI stock.

Robert Izquierdo has positions in CoreWeave and Microsoft. The Motley Fool has positions in and recommends Microsoft. The Motley Fool has a disclosure policy.