“…a very valuable contribution.” - Larry Summers, former Secretary of the Treasury and director of the National Economic Council, president emeritus, Harvard University
“…challenges misconceptions that distort our economic debates.” - Arthur Brooks, President of the American Enterprise Institute
“Unintended Consequences provides a provocative interpretation of the causes of the global financial crisis and the policies needed to return to rapid growth. Whether you agree or not, this analysis is well worth reading.” - Nouriel Roubini, New York University; Chairman, Roubini Global Economics
“…a must-read for serious students of economic policy.” - Glenn Hubbard, Dean, Columbia Business School, and former Chairman of the Council of Economic Advisers
“…a very valuable contribution.” - Larry Summers, former Secretary of the Treasury and director of the National Economic Council, president emeritus, Harvard University
“…a fresh argument for the productive value of inequality.” - David Autor, Professor of Economics, Massachusetts Institute of Technology
“A full-throated defense of economic dynamism.” - The Wall Street Journal
“…serious thinking for serious thinkers. …a thought-provoking blueprint for growing middle- and working-class incomes.” - Mitt Romney, former Governor of Massachusetts
“Unintended Consequences represents the most cogent and persuasive analysis of the Financial Crisis to date.” - Andrei Shleifer, 1999 John Bates Clark Medal Winner
“Unintended Consequences offers deep and well-argued analyses on almost every issue.” - The New York Times
“…a comprehensive explanation of the modern economy.” - Julian Robertson, Founder, Tiger Management
“…reminds us that inequality sends a signal of what society lacks most, in America’s case, entrepreneurship and risk taking.” - Lawrence Lindsey, CEO, The Lindsey Group, former Director of the National Economic Council
AI Summary.A benchmark designed to measure fluid reasoning rather than memorized knowledge — where earlier AI models scored near zero — has been solved at human-level performance by a new AI system. The benchmark's creator now expects true artificial general intelligence to arrive before 2030.
Michael CembalestJ.P. Morgan
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Newly released Chat GPT-6 scored 62% on Francoise Chollet’s fluid human intelligence test when undirected by humans and 99% when directed.
Does solving one reasoning benchmark mean artificial general intelligence is near?
In 2019, Francois Chollet created the ARC-AGI, an exam designed to show the gulf between AI model memorized answers and the fluid intelligence that people have. The exam assesses the ability to quickly acquire skills and solve unfamiliar problems from first principles, rather than just memorizing enormous amounts of training data and regurgitating information. GPT3 scored a zero on ARC-AGI-1 (humans score 60%-70%), and OpenAI o1 scored just 3% on ARC-AGI-2. In March 2026, Chollet and the ARC Prize Foundation released ARC-AGI-3, a harder set of problems that shifted from static to dynamic interactive video challenges. GPT-6 Astra scored 62% with a standard harness and 99% with a Provider Adapter harness (which uses OpenAI’s context management features to preserve and reuse the model’s reasoning between interactions).
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Why .400 Hitters Disappeared — and What It Means for AI— As AI model performance converges toward a ceiling, relative gains per improvement cycle shrink, transforming frontier capability from a pricing moat into a commodity where price becomes the primary differentiator and margin pressure intensifies across leading providers.
Chart of the Day: Small Models are Closing the Gap to Frontier AI— Small AI models are closing the gap with large ones, achieving the same reasoning benchmarks with 142x fewer parameters than required two years ago. This makes on-device AI viable without data centers, compressing the economic case for cloud-based, per-query AI services.
AI Summary.The share of AI queries requiring top-tier proprietary models has fallen from 60% to 25%, as open-weight models handle a growing proportion of tasks at lower cost.
Toby NangleFinancial Times
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Data on OpenRouter, an AI query triage service, show that at the start of the year, the share of queries routed to a closed-weight proprietary model was 60%. That share has declined to 24% as open-weight performance has improved relative to frontier models.
Are open-source models eroding the competitive moat of proprietary AI?
Core argument: OpenRouter data show closed-weight proprietary models’ share of routed queries collapsed from 60% to 25% in 2025, indicating open models now handle three-quarters of real-world AI traffic.
One way to see which way the wind is blowing on open-model versus closed-model usage is by looking at data from router firms like OpenRouter, the New York start-up that Stripe agreed to buy last month. AI routers work a bit like an AI query triage service with a toll booth strapped on. Clients rock up, basically model-indifferent, and rather than tie themselves to any given model, they just send their queries to the router, which then flips them on to the lowest-cost model that will produce a good enough response for whatever the task at hand. Asking really tough closed-end frontier-model-worthy questions? To a frontier model they go. Increasingly, the share of queries that are truly closed-weight frontier-model-worthy is declining.
Takeaways by Macro Roundup® AI
OpenRouter data show closed-weight proprietary models’ share of routed queries collapsed from 60% to 25% in 2025, indicating open models now handle three-quarters of real-world AI traffic.
AI routers structurally disadvantage hyperscalers by directing queries to the cheapest adequate model, reserving closed-weight frontier offerings only for tasks that demonstrably require them.
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The AI Price Wars and Their Consequences— AI model pricing is converging toward commodity levels, where an 80% annual price decline requires 400% unit growth just to maintain flat revenue. Ceding lower-tier markets to defend premium pricing has historically failed against low-cost competitors, making trillion-dollar valuations difficult to sustain alongside heavy capital spending.
OpenAI and Anthropic In Price War as Chinese AI Rivals Gain Ground— AI model pricing is falling as competition intensifies, with leading models cutting token costs by up to 80%. Higher-priced models can deliver lower total costs by completing tasks in fewer tokens or attempts.
The AI Trade Is Losing One of Its Key Signals— AI token prices have fallen over 90% while total spending has roughly doubled, expanding the market overall. However, a 46% gap between AI investment and actual sales — wider than the 32% divergence seen during the 2001 telecom collapse — raises the risk that current infrastructure spending is outpacing real
AI Summary.Long-term interest rates have risen 45–79 basis points across major economies, with the AI investment boom—not fiscal or monetary policy—driving the surge in demand for capital. A comparable IT spending wave in the late 1990s coincided with even higher long-term rates despite low inflation and a budget surplus.
Paul KrugmanKrugman Wonks Out
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Noting long-term yields have risen across advanced economies, Krugman argues increased yields over the last 6 months “may not have much to do with policy at all,” but are more likely due to “the surge in demand for funds as a result of the AI boom.”
Is artificial intelligence investment driving up global borrowing costs?
Core argument: Bruegel finds 30-year sovereign yields rose 45–79 bps across the U.S., Germany, France, Italy, the U.K., and Japan in the six months to Aug. 28, with the U.S. at 58 bps, suggesting a global demand-for-capital driver rather than U.S.-specific fiscal policy.
What [has been] driving interest rates higher [in the six months to August 28]? The European think tank Bruegel notes “US, German, French, Italian, UK, and Japanese 30-year yields [all] rose by 45-79 basis points in the six months to 28 August, with the US in the middle at 58bp.” It may not have much to do with policy at all, [but is instead due to] the surge in demand for funds as a result of the AI boom. We are in the midst of a surge in spending on IT that is on track to be even bigger than the boom of the late 1990s, [when] long-term rates were even higher then than they are now, even though inflation was low and we had a budget surplus.
Takeaways by Macro Roundup® AI
Bruegel finds 30-year sovereign yields rose 45–79 bps across the U.S., Germany, France, Italy, the U.K., and Japan in the six months to Aug. 28, with the U.S. at 58 bps, suggesting a global demand-for-capital driver rather than U.S.-specific fiscal policy.
Rising Bond Yields Are Good, Actually— Higher interest rates remain low relative to nominal income and spending growth of ~7% annually, making current rate levels benign rather than restrictive. Elevated rates help reallocate spending away from consumption and housing toward productive investment, or attract foreign capital to fund that shift.
Don’t Draw The Wrong Conclusion From Treasury Yields— Rising long-term bond yields reflect higher expected short-term interest rates over the next decade, not concerns about government debt sustainability, as both inflation expectations and the risk premium for holding long-term bonds have remained stable.
AI Summary.Deep-tech investment outside AI has exceeded $150bn since early 2024, surpassing the $133bn invested across the entire prior decade. Falling valuations for traditional software companies and outsized returns from early bets on capital-intensive ventures are pushing investors toward riskier, science-driven deals.
Tim BradshawFinancial Times
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Since the start of 2024, more than $150B of venture capital has been invested into non-AI “deep tech” firms whose products are rooted in significant engineering advances, exceeding the $133B invested in such firms btw 2010 and 2019.
Are investors abandoning software for capital-intensive science bets?
Core argument: Deep-tech investment excluding AI exceeded $150bn since early 2024, surpassing the entire $133bn deployed across the prior decade (through end-2019), as falling valuations for traditional software push venture capital toward capital-intensive scientific bets.
The AI boom is fuelling a resurgence in ambitious “moonshot” bets, as early SpaceX backers’ huge returns and falling valuations for traditional software companies force tech investors to embrace riskier and more capital-intensive dealmaking. Excluding the giant sums ploughed into AI start-ups, global investment in “deep tech” — companies whose products are rooted in big scientific or engineering advances — has exceeded $150bn since the start of 2024, more than the $133bn in the entire decade to the end of 2019, according to Dealroom. This year’s deep-tech investments have not yet surpassed 2021’s peak, which was propelled by battery and electric vehicle deals for the likes of Rivian and Northvolt — many of which turned sour, highlighting the risks involved in moonshot dealmaking.
Takeaways by Macro Roundup® AI
Deep-tech investment excluding AI exceeded $150bn since early 2024, surpassing the entire $133bn deployed across the prior decade (through end-2019), as falling valuations for traditional software push venture capital toward capital-intensive scientific bets.
The 2021 deep-tech peak — driven by battery and electric vehicle deals including Rivian and Northvolt — has not yet been surpassed, and the subsequent losses from those deals underscore the capital destruction risk inherent in moonshot dealmaking.
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Capital Is Making a Comeback— Btw 1985-2021 the capital intensity of the American economy was relatively flat as a rise in intangible investment was offset by a decline in tangible…
Public to Private Equity in the United States: A Long-Term Look— Global venture capital returns are highly skewed: 62% of deals lose money, more than half lose 50–100% of invested capital, but fat-tailed outliers drive overall returns. This pattern mirrors historical whaling voyages, where payoffs were similarly variable and driven by rare outsized outcomes.
Gross and Net US Investment— Net investment has fallen from ~40% of gross investment in the 1970s to ~25% today, meaning three-quarters of gross investment merely replaces depreciating assets. The shift toward faster-depreciating information technology assets requires larger gross investment increases to achieve any given gain in productive capital per worker.
AI Summary.AI is destabilizing the hourly-billing revenue model that underpins large law firms' compensation structures. Major financial institutions are shifting external legal work to competitive bidding and fixed-fee arrangements, pressuring firms to adopt AI to maintain profitability through volume rather than hours billed.
Kaye Wiggins and Joshua FranklinFinancial Times
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AI is destabilizing the hourly-billing model of large law firms. Major banks are moving toward competitive bidding and fixed fees, expecting AI savings to lower legal costs, while firms preserve profits by handling more matters with fewer hours.
Does artificial intelligence force law firms to choose volume over margins?
Core argument: Morgan Stanley’s general counsel has mandated that most external legal work shift to competitive bidding and fixed-fee arrangements by year-end, directly threatening the billable-hour model that underpins Big Law revenue.
Top lawyers have “for a long time been compensated on the foundation of [associates billing for long hours],” Eric Grossman, Morgan Stanley’s general counsel, told the FT. “Their compensation model is now extraordinarily unstable.” The ability to complete tasks more quickly could mark “a fundamental altering of the revenue foundation.” Grossman said the bank was willing to continue to pay large sums for the judgment and talent of the best lawyers, but that by the end of this year most external legal work would be tendered through competitive bidding processes and paid for using alternative arrangements such as fixed fees. That should cost the bank less, he said, but law firms could remain as profitable as before if they use AI to work on more matters and reduce costs.
Takeaways by Macro Roundup® AI
Morgan Stanley’s general counsel has mandated that most external legal work shift to competitive bidding and fixed-fee arrangements by year-end, directly threatening the billable-hour model that underpins Big Law revenue.
AI’s ability to compress associate hours attacks the billing-volume foundation of large law firms, rendering their compensation structures, in Morgan Stanley’s assessment, extraordinarily unstable.
Law firms can preserve profitability under fixed-fee pricing only by deploying AI to handle greater matter volume at lower cost — shifting the profit driver from hours billed to throughput.
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AI and Productivity— Rising US labor productivity is driven by higher capital utilization—factories, servers, and hotel rooms running harder—rather than new investment or efficiency gains at the individual task level.
US Focus: The Effect Of Soaring Profits— Corporate profit margins have expanded ~250 basis points over the past year, approaching all-time highs, as 23% profit growth far outpaced 8% growth in corporate value added. Labor's share of income is hitting new lows, confirming that margin expansion—not faster economic growth—is the primary driver of record profit levels.
AI Summary.Job postings for occupations with AI-automatable tasks declined after generative AI tools became widely available, with more-exposed firms reducing automatable roles relative to total listings. This shift has negatively affected labor market outcomes for recent college graduates.
Samuel Dodini and Tucker SmithFederal Reserve Bank of Dallas
Date Posted:
A FRBD analysis of Lightcast (formerly Burning Glass) job postings data suggests AI-driven automation reduced job postings in Texas by ~1.8% in 2024 and ~2.6% in 2025, with recent college graduates most impacted.
Are firms already replacing workers with AI automation?
Core argument: Texas job postings data show that firms with greater GenAI exposure reduced automatable-task listings relative to total ads following ChatGPT’s late-2022 launch, marking a measurable shift in employer labor demand.
A new analysis, using data from millions of online job postings, shows GenAI is reshaping labor demand in Texas. After the release of ChatGPT in late 2022, job openings fell for occupations whose tasks are automatable by GenAI. Indeed, more-exposed firms posted fewer automatable positions relative to their total ads after the release of ChatGPT. Follow-up analyses suggest this shift in demand has negatively affected the labor market outcomes of recent college graduates from Texas universities.
Takeaways by Macro Roundup® AI
Texas job postings data show that firms with greater GenAI exposure reduced automatable-task listings relative to total ads following ChatGPT’s late-2022 launch, marking a measurable shift in employer labor demand.
The contraction in GenAI-automatable job postings has translated into worse labor market outcomes for recent college graduates from Texas universities, linking AI adoption directly to early-career employment disruption.
The Impact of AI on the U.S. Labor Market— A difference-in-differences design finds 6.7% slower real-wage growth in AI-exposed occupations since 2023 than in low-exposure ones, with no detectable job…
AI Summary.S. 575 between 2022 and 2026, the first sustained decline in relative demand for college-educated labor in four decades. AI exposure in white-collar occupations accounts for roughly 28% of that drop, as wage growth slowed disproportionately in high-AI-exposure jobs where college graduates are concentrated.
José Azar, Mireia Gine and Javier Sanz-EspínSocial Science Research Network
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The college wage premium flattened in the mid-2010s and has fallen ~8% since 2022. The authors argue that this compression reflects a broad decline in the returns to formal schooling, rather than a decline in the upper tail.
Is the college degree losing its economic value to artificial intelligence?
Core argument: The U.S. college wage premium fell from 0.626 to 0.575 between 2022 and 2026—the first sustained decline in relative demand for college labor after four decades of uninterrupted expansion.
After expanding for four decades, the U.S. college wage premium [dropped] sharply from 0.626 in 2022 to 0.575 in 2026. Current Population Survey data through 2026 implies an unprecedented drop in relative demand for college labor—the first sustained negative relative demand growth. Post-2022 wage growth slowed disproportionately in high-exposure occupations, which employ a disproportionate share of college graduates. By 2026, going from zero occupational AI exposure to full exposure had a negative effect on wages of−0.086. Combined with the college–non-college exposure gap, this mechanism accounts for roughly 28% of the total drop in the college wage premium from 2022 to 2026. While non-causal, these patterns indicate that task displacement in AI-exposed white-collar occupations plays a quantitatively meaningful role in the recent compression of the aggregate skill premium.
Takeaways by Macro Roundup® AI
The U.S. college wage premium fell from 0.626 to 0.575 between 2022 and 2026—the first sustained decline in relative demand for college labor after four decades of uninterrupted expansion.
Moving from zero to full occupational AI exposure reduced wages by 0.086 log points by 2026.
the college–non-college AI-exposure gap accounts for roughly 28% of the total premium compression over that period.
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AI Summary.Net investment has fallen from ~40% of gross investment in the 1970s to ~25% today, meaning three-quarters of gross investment merely replaces depreciating assets. The shift toward faster-depreciating information technology assets requires larger gross investment increases to achieve any given gain in productive capital per worker.
Timothy TaylorConversable Economist
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Is Database:
Database
U.S. real net private domestic investment—which adds to the American capital stock—is now only ~25% as large as gross investment, down from ~40% in the 1970s. Taylor suggests the widening gap between gross and net investment reflects the relatively rapid depreciation of IT-related capital.
Does faster asset depreciation explain slowing productivity growth?
Core argument: Net investment has fallen from ~40% of gross investment in the 1970s to ~25% today, meaning three-quarters of gross investment now merely replaces depreciating capital rather than expanding the productive stock.
The figure divides net investment by gross investment. Back in the 1970s, net investment was often around 40% of gross investment, but the share has been slumping over time. For the last decade or so, net investment has been about 25% of the gross–that is, about three-quarters of gross investment is just making up for depreciation of the pre-existing capital stock. The likely reason for the growing gap between gross and net investment is that modern investment is more likely to be related to information technology [which] depreciates more rapidly and thus needs to be replaced and updated more often. If we want the average US worker to be using a greater amount of capital on the job–which was one of the key drivers of rising labor productivity in the past–it now takes a bigger rise in gross investment to lead to a given rise in net investment.
Takeaways by Macro Roundup® AI
Net investment has fallen from ~40% of gross investment in the 1970s to ~25% today, meaning three-quarters of gross investment now merely replaces depreciating capital rather than expanding the productive stock.
The shift toward information technology — which depreciates faster than physical machinery — is the primary driver of the widening gap between gross and net investment.
Raising capital per worker, a historic engine of labor productivity growth, now requires a substantially larger increase in gross investment than it did several decades ago.
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