Two of the most closely watched smaller AI stocks heading into the second half of 2026 are SoundHound AI Inc. (NASDAQ: SOUN) and BigBear.ai Holdings Inc. (NYSE: BBAI), and while both have struggled year to date amid wider volatility in speculative AI names, their underlying business profiles, growth trajectories, and risk structures are meaningfully different.
SoundHound is down 16.2% year to date and BBAI has fallen 27.4%, both underperforming the broader technology sector’s 16.8% gain and the S&P 500’s 9.1% advance over the same period.
SoundHound’s Q1 2026 results set the tone for its bull case, with revenue rising 52% year-on-year to $44.2 million and core automotive and IoT AI business growing 88% excluding acquisitions, driven by expanding demand across restaurants, retail, banking, and enterprise customer service.
The company’s planned acquisition of LivePerson, expected to close in H2 2026, is the most consequential near-term catalyst for the stock: it would combine SoundHound’s voice and agentic AI capabilities with LivePerson’s digital messaging platform and its relationships with 25 Fortune 100 companies, banks, airlines, and telecoms operators.
Management described a potential $500 million combined revenue opportunity and set a 2027 revenue target of at least $350 million to $400 million, implying roughly a doubling of trailing revenue over two years.
SoundHound also launched OASYS, a self-learning agentic AI orchestration platform designed to automate the entire lifecycle of AI agents, and is increasingly using its own proprietary speech foundation models rather than expensive third-party frontier models, a move that could meaningfully improve margins if the strategy executes.
The risks are real: adjusted EBITDA losses of $26.7 million in Q1, GAAP gross margin of only 31.1%, and execution uncertainty around a rapid acquisition programme all weigh on the investment case at a valuation of 14.2 times forward sales, above the industry average of 11.72 times.
BigBear.ai’s story is centred on defence, homeland security, and mission-critical government AI, a positioning that has gained political tailwind from the Iran conflict and rising geopolitical pressures driving US defence AI spending higher.
Q1 2026 results were mixed: the company secured a classified sole-source intelligence contract worth approximately $53 million and won airport security contracts at O’Hare and Dallas-Fort Worth, while gross margin expanded sharply from 21.3% to 34% year-on-year and backlog grew 14% sequentially to $281.9 million.
However, Q1 revenue declined 1% year-on-year to $34.4 million, reflecting the lumpy nature of government contract timing, and the net loss was $56.8 million, though much of this involved non-cash charges tied to debt extinguishment.
The balance sheet improved materially after settling most convertible debt, with $431.5 million in cash and investments at quarter end providing meaningful financial flexibility compared to prior periods.
BBAI trades at 12.37 times forward sales, slightly below SOUN but still above the 11.72 times industry average, reflecting modest growth expectations and the slower revenue trajectory relative to SoundHound.
On analyst estimate trends, BBAI’s 2026 loss estimate narrowed to 25 cents from 35 cents over the past month, suggesting improving confidence in the cost structure, while SOUN’s consensus loss estimate widened slightly to 11 cents from 9 cents.
The conclusion from Zacks, which carries a Rank of 3 Hold on SOUN and Rank 4 Sell on BBAI, is that SoundHound’s faster revenue growth, broader enterprise AI platform exposure, and transformative acquisition pipeline give it the more compelling upside profile despite its elevated execution risks.
