Nebius Group vs. SoundHound AI: Which Tech Stock Is a Better Buy in 2026?

As artificial intelligence moves from hype to infrastructure, investors are looking for picks beyond the obvious giants. Should you bet on Nebius Group (NASDAQ:NBIS) or SoundHound AI (NASDAQ:SOUN)?

Nebius Group operates as a specialized cloud provider for intensive AI workloads, while SoundHound AI focuses on voice-enabled software for cars and restaurants. Both companies target the burgeoning tech stocks landscape, offering different ways to play the ongoing shift toward automated digital and physical services.

The case for Nebius Group

Nebius Group provides a full-stack platform that spans the entire AI development lifecycle, including data processing, model training, and production runtime. Operating within the broader tech stocks universe, it serves clients in healthcare, financial services, and robotics. With over 1,300 employees, the company positions itself as a streamlined alternative to massive hyperscalers for enterprises requiring specialized high-performance computing.

In FY 2025, revenue reached nearly $529.8 million, representing a significant jump from the $117.5 million reported in the previous year. This revenue growth of approximately 350.9% reflects the aggressive expansion of its cloud capacity and customer base. The company reported net income of roughly $101.7 million during this period, generating a net margin of 19.2% as it scaled its operations.

As of its December 2025 balance sheet, the debt-to-equity ratio is approximately 1.1x. This ratio, which measures total debt against shareholder equity, suggests the company uses a moderate amount of leverage to fund its expansion. The current ratio, assessing the ability to cover short-term liabilities with short-term assets, is healthy at close to 3.1x. Note that stock-based compensation represented roughly 21.6% of operating cash flow, which inflates reported cash generation since SBC is a non-cash expense added back in the cash flow statement. Free cash flow, which is cash from operations minus capital expenditures, was a loss of nearly $3.7 billion due to heavy infrastructure investment.

The case for SoundHound AI

SoundHound AI focuses on conversational intelligence, allowing businesses to integrate voice agents into vehicles, restaurant kiosks, and telecommunications systems. Its Houndify platform is used by major automotive manufacturers and restaurant chains to automate customer interactions. Following its acquisition of LivePerson in September 2026, the company has significantly broadened its enterprise AI capabilities. Customer concentration is a factor here, as losing a major automotive or restaurant client would materially impact revenue.

In FY 2025, revenue reached roughly $168.9 million, nearly doubling the $84.7 million recorded in the prior fiscal year. While this revenue growth of close to 99.4% is strong, the company continues to operate at a loss. It reported a net loss of approximately $14.0 million for the year, resulting in a net margin of -8.3% as it prioritizes market share and integration over immediate profitability.

As of its December 2025 balance sheet, the current ratio is approximately 4.6x, indicating a strong ability to meet short-term obligations. The company reported a debt-to-equity ratio of 0.0x, showing it carries no debt on its books. Free cash flow for the period was a loss of nearly $103.1 million, reflecting the costs of research and development and its expansion efforts. Managing these negative cash flows is a primary focus for the company as it integrates its recent acquisitions.

Risk profile comparison

Nebius Group faces intense competition from massive cloud providers like Microsoft, Amazon, and Alphabet, which possess significantly deeper financial resources. The company is also exposed to risks related to the high capital intensity of building data centers and the potential for rapid technological obsolescence in the semiconductor space. Additionally, navigating diverse regulatory environments across its global operations adds a layer of complexity to its growth strategy.

SoundHound AI carries risks related to its history of substantial net losses and negative operating cash flows, which may necessitate further capital raises that dilute shareholders. The integration of LivePerson remains a significant operational challenge, with potential for impairment if expected synergies do not materialize. Furthermore, the company has reported material weaknesses in its internal control over financial reporting and is currently managing legal probes regarding its governance and acquisition accounting.

Valuation comparison

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

The P/S ratio measures a company's market capitalization relative to its sales over the past twelve months. The Forward P/E ratio compares a company's stock price to its expected profits according to future earnings estimates.

Which stock would I buy in 2026?

I'd go with Nebius. The company reported extraordinary Q2 2026 revenue growth of over 400% year over year, driven by surging global demand for AI cloud infrastructure. Companies are lining up to rent its GPU capacity faster than Nebius can build it out, and Nvidia has taken a big stake in the business. The company reaffirmed its full-year outlook after beating estimates.

To its credit, SoundHound is gaining traction. Enterprise deals across healthcare, automotive, and restaurants show its voice AI platform is finding paying customers. Revenue grew at a strong double-digit rate in the most recent quarter and the company raised its full-year outlook. For investors comfortable with early-stage risk, the trajectory is worth watching.

But it concerns me that SoundHound operates in a crowded market with more direct competition than Nebius faces in AI cloud infrastructure. Nebius is serving demand that currently outpaces what it can supply, which is a position most companies would envy. Its position at the center of AI infrastructure demand gives it the stronger long-term foundation.

Sara Appino has positions in Amazon and Nvidia. The Motley Fool has positions in and recommends Alphabet, Amazon, Microsoft, Nvidia, and SoundHound AI. The Motley Fool has a disclosure policy.