The largest AI companies in the US in 2026 are NVIDIA ($5.4 trillion), Alphabet ($4.2 trillion), Microsoft ($3.8 trillion), Amazon ($2.7 trillion), and SpaceX-xAI ($2.0 trillion), followed by Meta, Broadcom, AMD, OpenAI, and Palantir. NVIDIA alone booked $96.2 billion in revenue in one quarter, and US private AI investment reached $285.9 billion in 2025.
AI Companies in the US 2026 – Introduction
AI Companies in the US now sit at the center of the American stock market. The ten firms in this report are worth about $24 trillion combined. NVIDIA leads at $5.4 trillion. Four hyperscalers plan to spend more than $700 billion on data centers and chips in 2026. That money flows to chip designers, cloud providers, model builders, and software firms, all based in the United States.
This report ranks the top 10 by market value in late September 2026. Public firms use market capitalization from September 27, 2026. Private firms use their latest funding round. Each section adds revenue, growth, spending, or user figures from filings released between June and September 2026. The data comes from company earnings releases, SEC filings, Stanford University, and market data providers. Rankings shift fast, so treat every single value as a snapshot.
Interesting Facts About AI Companies in the US in 2026
| Fact | 2026 Data | Context |
|---|---|---|
| Largest AI company by market cap | $5.4 trillion | NVIDIA, September 27, 2026 |
| NVIDIA quarterly revenue | $96.2 billion | Up 106% year over year |
| US private AI investment | $285.9 billion | Full-year 2025 total |
| Newly funded US AI companies | 1,953 | 2025 count |
| Microsoft commercial backlog | $678 billion | Up 84% year over year |
| Alphabet cloud backlog | $514 billion | Up from $490 billion |
| AWS backlog | $496 billion | About 2.5 times a year earlier |
| ChatGPT weekly users | 900 million | Early 2026 figure |
| US data centers | 5,427 | Over 10 times any other country |
| SpaceX IPO | June 2026 | Largest listing in history |
Source: Stanford University Human-Centered AI Institute, 2026 AI Index Report; company earnings releases from Microsoft, Alphabet, Amazon, and NVIDIA (July–August 2026); The Motley Fool market data (September 2026).
The backlog figures show how much AI work customers have already signed for. Microsoft holds $678 billion, Alphabet $514 billion, and Amazon $496 billion. That is more than $1.6 trillion in contracted demand at three companies. NVIDIA’s $96.2 billion quarter, up 106%, shows the same demand arriving as chip orders. Its $5.4 trillion value makes it the largest of all AI Companies in the US.
The other rows give the wider picture. Investors put $285.9 billion into US AI firms in 2025 and funded 1,953 new ones. Users matter too: 900 million people use ChatGPT each week. The country hosts 5,427 data centers, which is over 10 times any other nation. SpaceX went public in June 2026 in the largest IPO ever, and it now owns xAI. Together these figures show AI spending moving from plans into signed contracts and shipped hardware.
Top 10 AI Companies in the US by Market Value in 2026
| Rank | Company | Value | Core AI Role |
|---|---|---|---|
| 1 | NVIDIA | $5.4 trillion | AI chips and systems |
| 2 | Alphabet | $4.2 trillion | Gemini models, TPUs, Google Cloud |
| 3 | Microsoft | $3.8 trillion | Azure cloud, Copilot |
| 4 | Amazon | $2.7 trillion | AWS cloud, Trainium chips |
| 5 | SpaceX (xAI) | $2.0 trillion | Grok models, Colossus supercomputer |
| 6 | Meta | $1.9 trillion | AI-driven advertising, Llama models |
| 7 | Broadcom | $1.7 trillion | Custom AI accelerators, networking |
| 8 | AMD | $1.0 trillion | Instinct GPUs, EPYC processors |
| 9 | OpenAI | $852 billion | GPT models, ChatGPT |
| 10 | Palantir | About $400 billion | Enterprise AI software |
Source: The Motley Fool market capitalization data (September 27, 2026); OpenAI funding round reports (March 2026); Palantir exchange quotes (September 2026).
Rank follows total value, not revenue. NVIDIA sits first at $5.4 trillion, which is $1.2 trillion above Alphabet at $4.2 trillion. Microsoft follows at $3.8 trillion and Amazon at $2.7 trillion. Those four hold $16.1 trillion together, about two-thirds of the group. SpaceX, which absorbed xAI in early 2026 and listed in June, ranks fifth at $2.0 trillion. Meta at $1.9 trillion and Broadcom at $1.7 trillion close the top seven. Apple, at about $4.9 trillion, is left out because hardware, not AI, drives its business.
The last three rows need care. AMD reaches $1.0 trillion. OpenAI’s $852 billion comes from its March 2026 funding round, not a stock price, and reports say a listing could slip to 2027. Palantir sits near $400 billion and moves with its stock daily. The Core AI Role column shows where each firm earns its AI money. NVIDIA, Broadcom, and AMD sell chips. Alphabet, Microsoft, and Amazon rent cloud power. OpenAI and xAI build models. Palantir and Meta sell software and ads.
AI Companies in the US 2026 Revenue: Latest Quarterly Results
| Company | Period | Revenue | Growth or Note |
|---|---|---|---|
| Amazon | Q2 2026 | $200.6 billion | +20% |
| Alphabet | Q2 2026 | $119.8 billion | +24% |
| NVIDIA | Q2 fiscal 2027 | $96.2 billion | +106% |
| Microsoft | Fiscal Q4 2026 | $90.0 billion | +18% |
| Meta | Q2 2026 | $60.8 billion | +28% |
| Broadcom | Fiscal Q3 2026 | $29.6 billion | +86% |
| AMD | Q2 2026 | $11.5 billion | +50% |
| Palantir | Q2 2026 | $1.9 billion | +93% |
| OpenAI | February 2026 run rate | About $25 billion | +25% vs. late 2025 |
| SpaceX (xAI) | Full year 2025 | $18.7 billion | Net loss under $5 billion |
Source: Company earnings releases and SEC Form 8-K filings (June–September 2026); Sacra OpenAI revenue estimates (2026); Gradually SpaceX statistics (July 2026).
Amazon leads on raw sales with $200.6 billion in one quarter, up 20%. Alphabet booked $119.8 billion (+24%), NVIDIA $96.2 billion (+106%), and Microsoft $90.0 billion (+18%). Meta reported $60.8 billion (+28%). NVIDIA’s growth rate stands out because its base is already huge. Broadcom’s $29.6 billion grew 86%, AMD’s $11.5 billion grew 50%, and Palantir’s $1.9 billion grew 93%. Each company uses its own fiscal calendar, so the Period column matters. Amazon and Alphabet also earn ad and retail income, so their totals are not pure AI revenue.
OpenAI’s line is a run rate, not a quarter. Its $25 billion annualized figure in February 2026 was 25% above the $20 billion it hit at the end of 2025. SpaceX’s $18.7 billion covers all of 2025 and includes Starlink and rockets, so xAI’s share is smaller. The company also lost just under $5 billion that year. Read the last column as year-over-year growth for public firms and as a run-rate comparison for OpenAI.
Which AI Companies in the US Sell the Most AI Chips in 2026
| Company | AI Hardware Metric | Latest Figure | Growth |
|---|---|---|---|
| NVIDIA | Data Center revenue, quarter | $89.0 billion | +117% |
| Broadcom | AI semiconductor revenue, quarter | $16.7 billion | +221% |
| AMD | Data Center revenue, quarter | $6.7 billion | +107% |
| Amazon | Custom chip run rate | $25 billion or more | Triple digits |
| Alphabet | TPU sales | First revenue in Q2 2026 | Most due in 2027 |
Source: NVIDIA Q2 fiscal 2027 release (August 26, 2026); Broadcom Form 8-K, SEC (September 2, 2026); AMD Form 8-K, SEC (August 4, 2026); Amazon and Alphabet earnings calls (July 2026).
NVIDIA’s Data Center unit brought in $89.0 billion in one quarter, up 117%, or more than 92% of total sales. The company guides next quarter to $108.0 billion, plus or minus 2%, and assumes no Data Center sales in China. Its Vera Rubin platform is now in full production. No rival comes close on volume. Its gross margin of 75.0% shows its pricing power.
Broadcom builds custom accelerators and networking gear for large cloud buyers. Its AI chip revenue reached $16.7 billion, up 221%, and it guides to $21.7 billion next quarter. AMD’s Data Center revenue of $6.7 billion more than doubled, up 107%, and made up 58% of its sales. Amazon says its chip business passed a $25 billion annual run rate. Alphabet booked its first TPU revenue in Q2 and expects most of it in 2027. The Growth column shows who scales fastest from a smaller base. Custom chips let large cloud buyers reduce their reliance on NVIDIA.
Cloud Leaders Among AI Companies in the US in 2026: Azure, AWS, and Google Cloud
| Company | Cloud Unit | Latest Revenue | Growth | Backlog |
|---|---|---|---|---|
| Microsoft | Azure | Over $100 billion (fiscal 2026) | +43% in Q4 | $678 billion |
| Amazon | AWS | $42.2 billion (Q2) | +36.7% | $496 billion |
| Alphabet | Google Cloud | $24.8 billion (Q2) | +82% | $514 billion |
Source: Microsoft fiscal Q4 2026 earnings (July 29, 2026); Amazon Q2 2026 earnings (July 30, 2026); Alphabet Q2 2026 earnings (July 2026).
Azure passed $100 billion in annual revenue for the first time in fiscal 2026, and Q4 growth hit 43%. Microsoft’s $678 billion backlog counts commercial contracts across all products, not Azure alone, and it grew 84%. Microsoft 365 Copilot has over 30 million paid seats. AWS earned $42.2 billion in Q2, up 36.7%, its fastest pace in 18 quarters. That equals a $169 billion annual run rate.
Google Cloud is smaller but grows fastest. Revenue reached $24.8 billion, up 82%, at a 35.6% operating margin. Its $514 billion backlog tops AWS at $496 billion. AWS earned $16.6 billion in operating income at a 39.4% margin. Backlog counts signed work not yet delivered, so it previews future revenue. All three firms say demand still exceeds their capacity. The three unit revenues use different periods, so compare growth rates first and dollar totals second.
AI Capex Spending by the Biggest AI Companies in the US in 2026
| Company | 2026 Capex Guide | Prior Guide | Driver |
|---|---|---|---|
| Amazon | About $220 billion | $200 billion | Higher memory costs |
| Alphabet | $195–205 billion | $180–190 billion | Servers, about 60% |
| Microsoft | About $175 billion | About $190 billion | Longer building life |
| Meta | $130–145 billion | $125–145 billion | AI infrastructure, components |
Source: Amazon, Alphabet, Microsoft, and Meta earnings releases and calls (April–July 2026); Meta Form 8-K, SEC.
Four companies plan to spend more than $700 billion in 2026. Amazon leads at about $220 billion, up from $200 billion, mostly because of memory prices and AI capacity. Alphabet lifted its range to $195–205 billion, and its Q2 spend alone hit $44.9 billion, with about 60% going to servers.
Microsoft’s $175 billion looks like a cut from $190 billion, but the change comes from a longer assumed life for buildings, from 15 to 25 years. Its Q4 capex was $41 billion. Meta guides $130–145 billion and spent $31.08 billion in Q2. Spending now outruns cash flow at some firms, and Alphabet’s free cash flow fell to -$5.9 billion in Q2. The Prior Guide column shows how fast plans keep rising. Amazon’s CEO expects capacity to stay short through 2027.
OpenAI and xAI Valuations Among AI Companies in the US in 2026
| Metric | OpenAI | SpaceX (xAI) |
|---|---|---|
| Status | Private; confidential IPO filing June 8, 2026 | Public since June 12, 2026 (SPCX) |
| Valuation | $852 billion (March 2026) | $2.0 trillion market cap |
| Revenue | About $25 billion annualized | $18.7 billion (2025, all of SpaceX) |
| Scale | 900 million weekly ChatGPT users | 555,000 GPUs at Colossus |
| Funding | $122 billion round | xAI valued at $250 billion at merger |
Source: OpenAI funding announcement and Bloomberg and CNBC reporting as compiled by Sacra (March–August 2026); Gradually SpaceX statistics (July 2026); The Motley Fool (September 27, 2026).
OpenAI stays private. Its $122 billion round in March 2026 was the largest private raise on record and set the $852 billion valuation. It filed confidentially for an IPO on June 8, and reports say it may wait until 2027. Sales run near $25 billion a year, and its ad business passed $1 billion annualized in August. ChatGPT reaches 900 million weekly users, which puts it first among the most popular AI apps in the world. Amazon, NVIDIA, and SoftBank led the round with $50 billion, $30 billion, and $30 billion.
SpaceX bought xAI in February 2026 at a combined value near $1.25 trillion, then listed on Nasdaq in June. It now carries a market cap of $2.0 trillion. The $18.7 billion revenue figure covers the whole company, and Starlink drives most of it. Compute is the xAI story: Colossus runs 555,000 GPUs and draws about 2 gigawatts. The gap between OpenAI’s private mark and SpaceX’s public cap reflects funding-round pricing versus daily trading.
US AI Investment and Startup Funding in 2026: How AI Companies in the US Raise Money
| Metric | US Figure | Comparison |
|---|---|---|
| US private AI investment (2025) | $285.9 billion | China: $12.4 billion |
| California share | $218 billion | Over 75% of the US total |
| Newly funded AI companies (2025) | 1,953 | 10 times the next country |
| Global private AI investment (2025) | $344.7 billion | Up 127.5% |
| Global corporate AI investment (2025) | $581.7 billion | Up 130% |
| US data centers | 5,427 | 10 times any other country |
Source: Stanford University Human-Centered AI Institute, 2026 AI Index Report (April 2026).
Stanford’s 2026 AI Index puts US private AI investment at $285.9 billion in 2025, or 23.1 times China’s $12.4 billion. Stanford warns that China’s figure understates its spending because state guidance funds sit outside private tallies. California alone drew $218 billion, over 75% of the national total. The US also funded 1,953 new AI companies, more than 10 times the next country.
Globally, private AI investment hit $344.7 billion, up 127.5%, and total corporate AI investment reached $581.7 billion, up 130%. The US hosts 5,427 data centers, over 10 times any other country. These figures cover 2025, and full-year 2026 totals will not appear until early 2027. Our US AI investment statistics report tracks the venture side in more detail.
Enterprise AI Software and AI Advertising in 2026: Palantir and Meta Results
| Metric | Palantir (Q2 2026) | Meta (Q2 2026) |
|---|---|---|
| Revenue | $1.935 billion, +93% | $60.80 billion, +28% |
| Operating margin | 62% adjusted | 31%, down from 43% |
| Demand signal | US commercial revenue $764 million, +149% | Ad impressions +14%, price per ad +12% |
| Outlook | 2026 revenue guide of $8.15 billion | Q3 revenue guide of $61–64 billion |
| Scale | 220 deals of $1 million or more | 3.60 billion daily users |
| Market value | About $400 billion | $1.9 trillion |
Source: Palantir Form 8-K, SEC (August 3, 2026); Meta Form 8-K, SEC (July 29, 2026); The Motley Fool market data (September 2026).
Palantir sells AI software to companies and governments. Q2 revenue of $1.935 billion grew 93%, and US commercial sales more than doubled to $764 million. It closed 220 deals worth at least $1 million. Adjusted operating margin reached 62%, and management raised its 2026 revenue guide to $8.15 billion. Its value sits near $400 billion. Net dollar retention of 157% means existing customers spend far more each year.
Meta uses AI mainly to sell ads. Revenue of $60.80 billion grew 28%, driven by 14% more ad impressions and 12% higher prices. Costs jumped 55%, so operating margin fell to 31% from 43%. Legal charges of $2.40 billion and $1.18 billion of severance added to that. Meta guides Q3 revenue to $61–64 billion and reaches 3.60 billion people daily. Sector totals appear in our AI industry revenue statistics report.
Frequently Asked Questions About AI Companies in the US
What Are the Top AI Companies in the US in 2026?
By market value, the top 10 are NVIDIA, Alphabet, Microsoft, Amazon, SpaceX (xAI), Meta, Broadcom, AMD, OpenAI, and Palantir. Together they are worth about $24 trillion.
Which AI Company in the US Has the Highest Market Cap in 2026?
NVIDIA, at $5.4 trillion on September 27, 2026. Its Q2 fiscal 2027 revenue was $96.2 billion, up 106%.
How Much Revenue Do the Largest AI Companies in the US Make in 2026?
Amazon reported $200.6 billion in Q2, Alphabet $119.8 billion, NVIDIA $96.2 billion, and Microsoft $90.0 billion in their latest quarters. OpenAI runs near $25 billion a year.
Is OpenAI a Public Company in 2026?
No. OpenAI filed confidentially on June 8, 2026, and its last valuation was $852 billion. Reports say a listing may come in 2027.
Is Apple One of the Top AI Companies in the US in 2026?
Apple is worth about $4.9 trillion, but its main business is hardware, and its Siri AI runs on licensed Gemini models. This report ranks firms whose core growth comes from AI chips, cloud, models, or software.
How Much Will US AI Companies Spend on Data Centers in 2026?
Amazon, Alphabet, Microsoft, and Meta guide to more than $700 billion in combined 2026 capital spending.
Which AI Chip Companies in the US Are Growing Fastest in 2026?
Broadcom’s AI chip revenue grew 221% to $16.7 billion. NVIDIA’s Data Center revenue grew 117% to $89.0 billion. AMD’s grew 107% to $6.7 billion.
How Much Money Does the US Invest in AI Companies in 2026?
Stanford counted $285.9 billion of US private AI investment in 2025. Full 2026 data is not out yet, but OpenAI’s $122 billion round alone shows the pace.
Are AI Companies in the US Ahead of China in 2026?
On money, yes: 23.1 times more private investment. On model quality, the gap is thin. The best US model led its closest Chinese rival by only 2.7% in March 2026.
Where Can I Find the Latest AI Company Earnings in 2026?
Read each company’s investor relations page or its Form 8-K on the SEC’s EDGAR database. Quarterly results usually appear within weeks of quarter end.
Which AI Companies in the US Are Public and Which Are Private in 2026?
NVIDIA, Alphabet, Microsoft, Amazon, Meta, Broadcom, AMD, Palantir, and SpaceX trade publicly. OpenAI remains private.
How Fast Is Palantir Growing in 2026?
Palantir’s Q2 revenue rose 93% to $1.935 billion, and US commercial revenue rose 149%. It guides 2026 revenue to $8.15 billion.
How Many People Use ChatGPT Each Week in 2026?
About 900 million people use ChatGPT weekly, and more than 50 million pay for a subscription, according to OpenAI’s March 2026 announcement.
Which Cloud Provider Is Growing Fastest in 2026?
Google Cloud, with revenue up 82% to $24.8 billion in Q2 2026. Azure grew 43% and AWS grew 36.7%.
Why Do AI Companies in the US Spend So Much on Capex in 2026?
Demand exceeds capacity. Amazon, Alphabet, and Microsoft all report backlogs above $490 billion, and each says supply limits sales today.
What Is a Cloud Backlog for AI Companies in 2026?
Backlog is the value of signed contracts not yet booked as revenue. Microsoft reports $678 billion, Alphabet $514 billion, and Amazon $496 billion.
Disclaimer: This research report is compiled from publicly available sources. While reasonable efforts have been made to ensure accuracy, no representation or warranty, express or implied, is given as to the completeness or reliability of the information. We accept no liability for any errors, omissions, losses, or damages of any kind arising from the use of this report.