The benchmark U.S. 10-year Treasury yield climbed to its highest level since 2007 on Tuesday, extending a sell-off in government bonds as investors confronted the prospect of higher-for-longer interest rates and a worsening oil supply shock ahead of the Federal Reserve’s latest policy decision.

The 10-year yield rose 8 basis points to 5.041% as of 4:07 a.m. ET, after briefly breaking above 5% on Monday before retreating. The move puts the benchmark yield at a level not seen since before the global financial crisis and signals how quickly inflation and interest-rate expectations can overwhelm demand for U.S. government debt.

The 30-year Treasury yield, which is particularly sensitive to long-term inflation and geopolitical risks, climbed 7 basis points to 5.4%. The two-year yield, which more closely tracks expectations for Fed policy, rose about 5 basis points to 4.686%.

Bond prices move inversely to yields, meaning the rise represents a broad decline in the value of existing Treasurys.

The sell-off comes as the Federal Reserve begins a two-day policy meeting, with markets assigning more than a 92% probability to a 25-basis-point rate increase, according to the CME FedWatch tool. August inflation remained well above the central bank’s 2% target, leaving policymakers with less room to ease financial conditions even as economic risks build.

That tension is gaining attention because the latest threat to inflation is coming from oil.

“U.S. 10-year treasuries are highly sensitive to inflation expectations, and with inflation gauges still above the Fed’s target of 2%, we believe this tight correlation will likely persist for a while,” said Jonathan Liang, Standard Chartered’s chief investment officer of fixed income and foreign exchange.

The relationship between crude prices and Treasury yields has become unusually strong. The one-month rolling correlation between front-month West Texas Intermediate crude and the 10-year Treasury yield has risen to 0.96, according to BMO Capital Markets.

“Speaking simplistically, higher oil prices lead to higher inflation expectations and vice versa,” said Steve Sosnick, chief strategist at Interactive Brokers.

“Normally, the relationship isn’t as clean as it is now, but the geopolitical drivers behind the price of oil and global inflation are so prominent that the normally modest correlation has become much tighter,” he said.

“As long as oil prices remain firm and continue to drift higher, this will add pressure to interest rates,” Sosnick added.

Oil Shock Complicates the Fed’s Inflation Fight

Oil prices rose more than 2% on Tuesday after attacks on Saudi Arabian energy infrastructure disrupted the kingdom’s East-West pipeline, intensifying concerns about the availability of crude and the duration of the disruption.

Brent crude futures rose $2.50, or 2.37%, to $108.18 a barrel at 8:13 a.m. GMT, while U.S. West Texas Intermediate futures gained $2.46, or 2.43%, to $103.85.

The attacks have introduced another source of inflation pressure at precisely the moment when the bond market is already demanding greater compensation for holding long-term U.S. debt.

Iran-backed Houthi forces in Yemen launched fresh attacks on Saudi Arabia on Monday, while Gulf Arab states postponed planned discussions with Iran. The escalation has raised concerns that damage to energy infrastructure and transportation routes could take longer to repair.

“Fresh attacks by the Houthis targeting Saudi Arabia may be influencing oil market investors’ expectations about the severity and duration of the conflict,” said Hamad Hussain, senior climate and commodities economist at Capital Economics.

The Houthis said Monday that they had fired dozens of missiles and drones at a military airbase in Khamis Mushait in southern Saudi Arabia, targeting aircraft hangars, radar systems, runways and ammunition depots in retaliation for Saudi airstrikes in Yemen.

The attacks followed strikes on Friday that disrupted Saudi Arabia’s East-West pipeline, a crucial alternative route that allows the kingdom to transport oil to the Red Sea and bypass the Strait of Hormuz.

The pipeline is therefore more than a piece of infrastructure. Its disruption reduces Saudi Arabia’s ability to move crude without relying on a maritime chokepoint that has already become a major source of market anxiety.

The Strait of Hormuz previously carried about one-fifth of global oil supplies. Commodity vessel traffic through the strait fell to just four vessels on Monday from 10 the previous day, according to preliminary Kpler data.

Saudi Arabia could exhaust crude available for export within days if the East-West pipeline is not restored, according to buyers and traders. The disruption has threatened as much as 4% of global oil supply.

Goldman Sachs said the latest attack could be more severe and potentially threaten the remaining 2 million barrels per day of recent Yanbu exports. Repair estimates range from “very soon” to as long as eight weeks, according to the bank.

The duration of the disruption is becoming almost as important as the initial supply loss. A short-lived outage could produce a temporary price spike, while prolonged damage would force buyers to compete for a smaller pool of available crude and could feed higher energy costs into transportation, manufacturing and consumer prices.

Goldman Sachs said the attacks represented a meaningful escalation and increased the probability that Brent crude could rise above $120 a barrel. Its scenario assumes average Gulf oil production in 2027 remains 4 million barrels per day below pre-war levels.

Capital Economics’ Hussain warned that, without a demand adjustment or increased flows through the Strait of Hormuz, several weeks of East-West pipeline disruption could push Brent toward $130 a barrel.

That scenario would create a difficult environment for the Federal Reserve.

A conventional inflation shock caused by strong domestic demand can eventually be addressed through tighter monetary policy. An oil shock is different. Higher interest rates cannot produce more crude or reopen a damaged pipeline. Yet if energy prices lift headline inflation and begin feeding into broader price expectations, the Fed may still be forced to maintain or increase monetary restraint.

That helps explain why the Treasury market is reacting so sharply.

The rise in the two-year yield points to immediate concern over Fed policy, while the move in the 10- and 30-year maturities suggests investors are also demanding greater compensation for long-term inflation and fiscal risks.

A sustained oil shock could therefore produce an uncomfortable combination of higher inflation, higher Treasury yields and weaker economic growth. That would raise borrowing costs for households, companies and the U.S. government while simultaneously putting pressure on corporate valuations.

The significance of the 5% threshold in the 10-year yield extends beyond the bond market. Treasury yields serve as a reference point for mortgages, corporate borrowing, and the valuation of equities. As risk-free yields rise, investors generally require stronger earnings prospects to justify elevated stock-market valuations.

For markets already sensitive to inflation and monetary policy, another leg higher in Treasury yields could therefore broaden the pressure well beyond government bonds.

China provides a partial counterpoint to the supply concerns. Official data showed that Chinese oil throughput increased for a second consecutive month in August, supported by higher fuel exports after Beijing eased restrictions in mid-July.

But stronger Chinese refinery activity does not eliminate the broader supply risk. If disruptions persist across Gulf infrastructure and shipping routes, the market may have to absorb a prolonged reduction in available crude regardless of regional demand.

The immediate concern for investors is no longer about the Fed raising rates by 25 basis points. Markets are increasingly trying to determine how much additional inflation pressure the central bank will have to absorb if oil remains above $100 and moves toward $120 or higher.

A 5% 10-year yield was once viewed as an important psychological barrier. With the geopolitical shock now feeding directly into energy prices and inflation expectations, the more consequential issue is whether the yield can remain above that level. If it does, the Treasury market could be entering a more persistent repricing in which inflation, oil and monetary policy reinforce one another.

Analysts warn that this would make the Fed’s task harder and raise the cost of capital across the global economy at the same time.

OpenAI is betting that winning the legal industry will require more than putting powerful AI models in the hands of lawyers. The company is increasingly looking to the people who can help law firms and corporate legal departments integrate those models into the way they actually work.

That approach is taking shape through a new partnership with Telon, a London-based startup that embeds former lawyers inside legal teams to help customers get more value from the artificial intelligence tools they already have.

Telon said Tuesday that OpenAI has named it a “select partner,” giving the startup a role in working with shared customers to configure models, develop prompts, build AI agents and train lawyers to use the technology.

The arrangement provides an early glimpse into how OpenAI could expand its presence in professional services: by building an ecosystem of specialists around its models rather than relying solely on direct software sales.

Telon was founded in June by Lewis Bretts, a former trial attorney who previously built PwC’s legal practice. The startup employs so-called “legal engineers,” primarily former lawyers who work directly with law firms and corporate legal departments to help them deploy and use AI.

The model resembles forward-deployed engineering, but with legal expertise at its center. Instead of simply handing a customer access to an AI platform and leaving its lawyers to figure out how to use it, Telon works inside the organization to adapt the technology to specific workflows.

The idea is being embraced because adoption, rather than access, is increasingly becoming one of the biggest challenges in enterprise AI.

OpenAI launched its Partner Network in June as part of an effort to make it easier for consultants and other professional services companies to deploy its models and software inside organizations. The company has said it wants to certify 300,000 consultants by the end of 2026.

The expansion of that ecosystem reflects a broader shift in the enterprise AI market. The first phase was largely about getting companies to buy licenses, run pilots, and experiment with general-purpose models. The next phase is likely to be determined by whether employees use those systems consistently and whether companies can translate that usage into measurable productivity gains.

For law firms, that challenge is particularly pronounced.

Legal work is highly specialized, heavily dependent on existing processes and subject to professional and confidentiality requirements. A lawyer may have access to a sophisticated AI model but still use it only for relatively simple tasks if the system is not integrated into research, drafting, document review, knowledge management and other established workflows.

Bretts said the biggest challenge in selling AI to law firms is not closing the initial deal, but getting lawyers to actually use the technology.

That has created an opening for companies such as Telon.

Traditional professional services firms have spent decades helping enterprises implement major software systems. A company might hire McKinsey, Deloitte, or another consulting firm to introduce a Salesforce database or overhaul a business process. Those projects could take months or years and eventually reach an endpoint.

AI adoption is less static.

New models are released frequently, and each improvement can expand what applications built on top of them can accomplish. A company that successfully completes an AI pilot can therefore find itself with a rapidly changing technology stack only months later. That creates a recurring implementation problem. Organizations may have paid for AI licenses and demonstrated that the technology works, yet employees may continue using only a small portion of its capabilities.

Telon is betting that law firms will pay for specialists who can continuously close that gap.

The startup has already grown to 30 employees since its June launch and has raised capital from Zach Posner’s LegalTech Fund. Bretts declined to identify Telon’s customers or disclose the financial terms of its agreement with OpenAI.

OpenAI’s Legal Ambition Meets a Specialized Software Market

Legal technology presents OpenAI with a difficult competitive question. If the company provides increasingly capable models, why should a law firm buy directly from OpenAI rather than from a specialized legal-technology provider that has built an entire product around the way lawyers work?

Specialized legal software companies can package AI around specific tasks, proprietary workflows, and industry-specific interfaces. Their advantage is not necessarily the underlying model. It is the layer between the model and the professional using it.

Telon offers OpenAI another way to address that problem.

Rather than trying to replicate every piece of legal expertise and workflow software itself, OpenAI can work through partners that understand the customer environment and can translate the capabilities of its models into practical applications. The approach could become increasingly important as the AI market moves away from a simple competition over model benchmarks.

The value of a frontier model is ultimately constrained if customers cannot integrate it into their operations. For OpenAI, therefore, distribution now means more than putting ChatGPT or an API in front of a customer. It also means creating an implementation network capable of adapting the technology to specific industries.

The legal sector is a useful test case because it combines high-value knowledge work with unusually demanding requirements around accuracy, confidentiality, and professional judgment. It also illustrates why AI adoption may create a new layer of professional services around the technology itself. As models become more capable, companies may need specialists not simply to install AI, but to continuously redesign workflows around capabilities that did not exist when the original implementation began.

That is a different consulting model from traditional software deployment.

It also gives OpenAI a potential answer to one of the major issues facing model companies as competition intensifies: how to capture more of the economic value created by AI without having to build every application themselves. If the underlying models become increasingly commoditized, the companies that control distribution, workflow integration, and customer relationships could capture a larger share of enterprise spending.

Telon is still a very young company, so its partnership with OpenAI is not evidence that the model has been proven at scale. But the relationship points to a broader direction in enterprise AI. The next competitive battleground may not be simply who has the most capable model. It may be who can get those models embedded deeply enough into professional work that customers cannot easily operate without them.

The larger opportunity lies in the gap between buying AI and actually using it. OpenAI is increasingly building an ecosystem designed to make sure that gap does not remain someone else’s business.

Broadcom CEO Hock Tan is betting that the AI infrastructure boom has enough momentum to withstand growing calls for slower development of frontier models, brushing aside concerns that a moderation in AI progress could weaken demand for the chipmaker’s custom processors and networking equipment.

Tan told CNBC on Monday that Broadcom has no reason to reconsider its long-term AI semiconductor revenue targets, even as investors sharply reassessed the outlook for computing demand following comments from Anthropic CEO Dario Amodei.

Amodei’s weekend essay calling for AI companies to moderate the pace of frontier-model development triggered a broad selloff in AI infrastructure stocks on Monday. The proposal, which was endorsed by OpenAI CEO Sam Altman and Elon Musk, raised fresh questions about whether the enormous investments being made in data centers, accelerators and networking equipment can continue if the development of increasingly powerful models slows.

Broadcom shares fell 4.8% on Monday, while the iShares Semiconductor ETF dropped 5.6%. Companies supplying other components for data centers also came under pressure as investors considered the possibility that slower frontier-model development could eventually translate into weaker demand for computing infrastructure.

Tan, however, said the market was overestimating that risk.

“No, not in the least,” Tan said on CNBC’s “Mad Money” when host Jim Cramer asked whether the debate over slowing AI development had caused him to reconsider Broadcom’s fiscal 2027 and 2028 forecasts.

“We see the demand for compute infrastructure, for AI development or AI frontier models, and inference for the products that they feed to the world, as continuing to be very strong and, I believe, very durable,” he said.

Broadcom Sees AI Revenue Doubling Again

Tan’s confidence is backed by an unusually large set of revenue expectations for the company’s AI semiconductor business.

During Broadcom’s fiscal 2026 third-quarter earnings call on Sept. 2, he forecast AI semiconductor revenue of $115 billion in fiscal 2027, followed by another doubling to $230 billion in fiscal 2028.

The 2028 forecast was among the strongest elements of Broadcom’s latest earnings report and highlighted the extent to which the company expects AI spending to expand beyond the current generation of data-center infrastructure.

Broadcom’s AI semiconductor business includes custom AI accelerators as well as networking chips used to connect and move data between processors inside large AI systems. That positioning gives the company exposure not only to companies developing frontier models but also to the broader infrastructure required to operate AI applications at scale.

The relationship with Anthropic makes the debate particularly important for Broadcom shareholders. Tan said Anthropic is expected to become Broadcom’s largest custom-chip customer in 2027 and retain that position in 2028.

Google has historically been viewed as Broadcom’s largest custom-chip customer, with the two companies working together on Google’s tensor processing units. Anthropic’s expected rise to the top of Broadcom’s customer base indicates how rapidly AI model developers are becoming major buyers of custom computing infrastructure.

Yet Tan sees a contrast between the demand for training sophisticated models and the much larger potential market created once those models are deployed.

“I don’t know about training, but when you want to productize inference, I see it continuing to be very, very strong,” Tan said.

The view could prove important if AI companies begin to moderate the pace of training frontier models. Training requires enormous bursts of computing power to develop new generations of models, while inference requires computing resources every time those models are used.

As AI moves into consumer products, enterprise software and automated services, inference demand can therefore grow even if the frequency of major frontier-model releases slows.

AI Safety Debate Meets Infrastructure Economics

Amodei’s proposal has introduced a new variable into an AI investment story that has largely been driven by assumptions of ever-increasing model capability and computing requirements.

The Anthropic CEO said that AI companies should take additional time to ensure powerful systems can be properly evaluated and controlled. His three-step plan seeks to moderate the pace of development without “sacrificing commercial advantage or the United States’ lead in AI.”

Tan said he agrees that AI requires restrictions and safeguards, but he does not share the more severe concerns surrounding the technology’s trajectory.

“Like any tool, it’s important to put governances, safeguards on how we use the tool,” Tan said.

But he rejected the idea that AI could simply escape human control.

“It’s not a live animal that will run wild by itself,” Tan said.

His argument puts the infrastructure industry’s position in sharper focus. Broadcom does not need every AI lab to accelerate model development indefinitely to sustain demand. Its business can benefit from the expanding use of AI after models have already been developed, particularly as inference workloads spread across businesses and consumer applications.

Tan also framed the technology in economic rather than existential terms, arguing that generative AI and frontier models will create substantial productivity gains.

“AI, generative AI, the creation of those frontier models … will create huge value,” he said, comparing the technology’s potential impact with the Industrial Revolution that began in England in the 18th century.

“It is still at the end of the day a tool that will make our society, humanity, reach a better level of living,” Tan said.

The immediate market reaction appears as an indication that investors are less willing to assume that AI infrastructure demand will remain insulated from changes in the pace of model development. Broadcom’s exposure to Anthropic makes it particularly sensitive to that question.

Tan’s response, however, is believed to rest on a broader thesis: even if frontier-model training becomes more measured, the commercial deployment of AI could create a separate and potentially larger source of chip demand.