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SoundHound vs. C3.ai: Which AI Stock Has More Growth Potential?

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Key Takeaways

  • SOUN offers stronger long-term growth potential than C3.ai, backed by AI adoption and expanding deployments.
  • SOUN projects 62.2% revenue growth in 2027 and trades at 5.32X forward sales, below C3.ai's 8.38X multiple.
  • SoundHound's LivePerson deal unlocks cross-selling opportunities, but losses and integration risks persist.

SoundHound AI, Inc. (SOUN - Free Report) and C3.ai, Inc. (AI - Free Report) are emerging players in the rapidly expanding artificial intelligence (AI - Free Report) market, capitalizing on growing enterprise adoption of automation, generative AI and intelligent applications. Both companies are developing advanced AI platforms designed to improve operational efficiency, automate complex workflows and accelerate digital transformation across industries. 

While SoundHound specializes in conversational and agentic AI solutions across voice, digital and physical environments, C3.ai focuses on enterprise AI applications, predictive analytics and industry-specific automation. Both companies offer substantial long-term growth opportunities, although their differing commercialization strategies, financial trajectories and competitive positioning warrant closer examination.

With enterprise AI adoption accelerating, evaluating their growth prospects, execution capabilities, valuations and earnings expectations is particularly relevant. Let's dive deep and compare the two stocks' fundamentals to determine which is the better investment now.

The Case for SoundHound Stock

SoundHound is benefiting from accelerating enterprise adoption of conversational and agentic AI, supported by its expanding presence across healthcare, financial services, automotive, restaurants and telecommunications. Its proprietary OASYS platform enables enterprises to deploy intelligent AI agents capable of handling complex customer interactions and executing transactions across multiple channels.

Strong demand for OASYS, improving pilot-to-production conversion and expanding enterprise deployments are strengthening SoundHound's competitive positioning. The company reported 45% year-over-year revenue growth in second-quarter 2026, reflecting accelerating adoption of its AI offerings. Growing engagements with automotive manufacturers, major financial institutions and restaurant chains also support recurring revenue opportunities. 

SoundHound's September 2026 acquisition of LivePerson represents another significant growth catalyst. The combination integrates SoundHound's voice AI capabilities with LivePerson's digital messaging infrastructure, expanding its reach to customers that include 25 Fortune 100 companies. The combined platform supports customer interactions across voice, web, mobile, SMS and social channels, while creating substantial cross-selling opportunities. Management has identified more than $500 million in potential future revenues from the existing customer base, although this remains an opportunity rather than committed revenue. 

However, persistent operating losses, cash consumption, acquisition integration risks and intense competition remain concerns. Integrating LivePerson while maintaining product innovation and controlling expenses could challenge SoundHound's path toward sustainable profitability.

The Case for C3.ai Stock

C3.ai is positioned to capitalize on enterprise demand for agentic AI, predictive maintenance, supply-chain optimization and intelligent automation. Its C3 Agentic AI Platform, C3 Generative AI and industry-specific applications provide organizations with integrated solutions to develop and deploy enterprise-scale AI systems.

The company's expanding opportunities across manufacturing, energy, healthcare and government agencies support its long-term growth prospects. Its federal business remains particularly promising, with federal bookings increasing 138% year over year in fiscal first-quarter 2027. Agreements involving major industrial enterprises and government agencies demonstrate continued commercial relevance.

C3.ai is also emphasizing product innovation through C3 Code, which enables users to create enterprise AI applications using natural-language instructions. This capability, alongside its broader agentic AI platform, could accelerate application development, improve customer adoption and strengthen its competitive positioning.

Meanwhile, management's restructuring initiatives, sales realignment and tighter expense controls are intended to improve operational efficiency. Bookings increased 73% sequentially, while positive free cash flow and a $651.1 million cash balance provide financial flexibility. These improvements suggest early progress in the turnaround, although sustained execution remains essential.

Nevertheless, C3.ai faces meaningful challenges, including declining revenues, prolonged enterprise sales cycles and uncertainty surrounding its restructuring efforts. Management's fiscal 2027 revenue guidance of $210-$240 million reflects continuing pressure on its operating trajectory. Recovering sustained revenue growth while improving profitability remains its central challenge.

C3.ai Leads SoundHound in Share Price Performance

SoundHound shares have plunged 56.2% year to date (YTD), significantly underperforming C3.ai's 8.9% decline. Both stocks belong to the Zacks Computers – IT Services industry, which has lost 9% during the same period. Meanwhile, the broader Zacks Computer and Technology sector and the S&P 500 have gained 14.9% and 11.3%, respectively.

SOUN vs AI Price Performance (YTD)

Zacks Investment Research
Image Source: Zacks Investment Research

The substantial divergence highlights stronger investor concerns surrounding SoundHound's profitability and execution risks. However, both companies face competition from established enterprise AI players, including Palantir Technologies Inc. PLTR and Innodata Inc. INOD.

SOUN Offers a More Attractive Valuation

SoundHound currently trades at a forward 12-month price-to-sales (P/S) ratio of 5.32X, substantially below C3.ai's 8.38X. Both stocks trade at discounts to the industry average of 12.85X.

SoundHound's lower valuation, coupled with stronger anticipated revenue growth, makes its risk-reward proposition relatively attractive. However, competition from Palantir and Innodata, alongside persistent losses, warrants caution.

SOUN vs AI Valuation (P/S F12M)

Zacks Investment Research
Image Source: Zacks Investment Research

EPS Estimate Revisions Favor C3.ai

Over the past 30 days, the Zacks Consensus Estimate for SoundHound's 2026 loss per share has widened from 16 cents to 18 cents, while the 2027 loss estimate has widened from 10 cents to 12 cents. Revenues are projected to increase 42.7% in 2026 and 62.2% to $391.2 million in 2027.

SOUN EPS Estimate Revision Trend

Zacks Investment Research
Image Source: Zacks Investment Research

Conversely, C3.ai's fiscal 2027 loss estimate has narrowed from 82 cents to 76 cents, while its fiscal 2028 loss estimate has improved from 50 cents to 46 cents. Fiscal 2027 revenues are expected to decline 10.9%, followed by 11.6% growth to $248.8 million in fiscal 2028.

C3.ai EPS Estimate Revision Trend

Zacks Investment Research
Image Source: Zacks Investment Research

These revisions favor C3.ai's improving cost discipline, though SoundHound maintains a substantially stronger revenue-growth outlook.

Conclusion: SoundHound Holds Greater Growth Potential

Both SoundHound and C3.ai currently carry a Zacks Rank #3 (Hold), suggesting a neutral near-term investment outlook. However, SoundHound appears better positioned for long-term growth, supported by accelerating enterprise AI adoption, OASYS traction, expanding industry penetration and LivePerson-related cross-selling opportunities. You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.

While C3.ai offers stronger recent share price performance, improving earnings estimates and greater liquidity, its revenue contraction and ongoing turnaround uncertainty temper its growth outlook. SoundHound's superior projected revenue expansion and lower sales multiple provide a more compelling upside opportunity, provided the company successfully integrates acquisitions and progresses toward profitability.

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