Palantir Technologies (NASDAQ: PLTR) has surged 46% over the three months through October 5, 2026, dramatically outpacing the S&P 500’s modest 3.9% gain over the same period.
Buyers entering at current prices appear to be betting that Palantir’s commercial sales growth will remain as strong as it has been in recent quarters.
That bet is now more complicated, because Palantir’s own management acknowledged on its latest earnings call that the company faces a new class of competitor: the AI labs that build the large language models it relies upon.
On the August 3 earnings call for the second quarter of 2026, management told investors that a shift in AI model deployment the company had warned about for years “is now here.”
The AI labs, which supply the underlying models Palantir uses on its platform, are now actively competing for the same corporate customers, making them both a supplier and a rival simultaneously.
Management provided a concrete example of this dynamic, disclosing that a major tech company had tested one of those AI labs and its deployment team head-to-head against Palantir’s platform, with Palantir winning a contract worth $10 million a year.
The Information reported on September 14, 2026, that Palantir was among large technology companies considering whether to restrict or stop using advanced AI models from providers such as Anthropic and OpenAI over intellectual property concerns.
Despite the competitive pressure, Palantir’s customer numbers for the second quarter showed no sign of deterioration, with U.S. commercial customers reaching 653, up 35% from a year earlier.
U.S. commercial contracts signed in the second quarter totaled $2.132 billion in aggregate value, a 153% increase from the same period a year earlier, suggesting enterprise demand remains robust.
Palantir’s U.S. commercial revenue reached $764 million in the second quarter of 2026, up 149% year over year, and management has forecast more than $3.424 billion from that segment for the full year 2026.
Companies supplied 46% of Palantir’s total revenue in fiscal 2025, generating $2.1 billion from its Commercial segment, with Commercial sales growing 60.0% that year against 53.1% growth from the Government segment.
The company’s valuation leaves little room for the growth trajectory to disappoint, with shares trading at approximately $74 for every dollar of trailing twelve-month revenue, compared to roughly $3 for the S&P 500 broadly.
Palantir stock sits about 9% below its 52-week high, a level that implies investors largely expect the AI lab threat will not materially slow the company’s commercial momentum.
That confidence carries meaningful downside risk, given that Palantir stock fell 63.8% from peak to trough during the 2022 inflation shock, compared to a 24.5% decline for the S&P 500 over the same drawdown.
Management’s own forecast for 2026 already implies U.S. commercial growth decelerating from the 149% pace recorded in the second quarter, toward the full-year target of at least 134%.
Third-quarter results will be the next critical data point, with management guiding for revenue of between $2.16 billion and $2.164 billion, up from the $1.935 billion reported in the second quarter.
A sharper-than-expected slowdown in U.S. commercial growth that puts the full-year forecast in doubt could serve as an early indicator that the AI labs are beginning to win business away from Palantir’s platform.
Investors watching the stock will need to weigh whether current valuation multiples appropriately price in the risk of a competitive landscape that Palantir’s own leadership has openly flagged.
