Top AI News Today: August 26, 2026
Nvidia reports earnings after the close today, and the number that matters most is not the one the company will actually beat. The market has priced in a beat on Nvidia's own $91 billion guide as close to a formality; what decides the stock, and arguably the mood of the entire AI trade for the next quarter, is the Q3 guide and whether management says anything new about China. Meanwhile, in a much quieter story, Reddit's presence in ChatGPT's answers quietly collapsed by 86 percent over the past two weeks, a reminder that a single unannounced technical change at OpenAI can reshape which sites the internet's biggest AI chatbot actually reads.
Nvidia Reports the Earnings That Could Decide the Direction of the Entire AI Trade
Nvidia reports fiscal second-quarter 2027 earnings after market close today, August 26, with results expected around 4:20 p.m. ET and a conference call at 5:00 p.m. ET. The company guided in May to revenue of $91 billion, plus or minus 2 percent, with gross margin of roughly 75 percent, a figure that would represent close to 95 percent year-over-year growth. Wall Street consensus sits slightly above that guide, at roughly $92 to $93.5 billion in revenue and adjusted earnings per share near $2.09 to $2.13, up from $1.05 in the same quarter last year.
The headline number is close to beside the point. Nvidia's own guidance explicitly assumes zero data center compute revenue from China, a deliberate exclusion following the geopolitical back-and-forth over export licenses for its China-specific H20 chip. Nvidia previously said it could ship between $2 billion and $5 billion in H20 revenue this quarter if the geopolitical environment permits, meaning any signal that Chinese sales are resuming, even partially, could move the stock more than the headline revenue beat itself. Data center revenue, which made up more than 92 percent of everything Nvidia sold last quarter at $75.2 billion, remains the number analysts will scrutinize hardest for signs Blackwell demand is holding its pace.
What makes this report unusually tense is that Nvidia's margin of beating its own guidance has been shrinking. The company beat the midpoint of its own guidance by 22.8 percent back in fiscal 2024; by fiscal 2027's first quarter, that margin had narrowed to roughly 5.5 percent. Shares closed at $208.48 on August 24, down nearly 3 percent on the day even after Nvidia grew revenue 85 percent last quarter, a sign the stock has increasingly stopped rewarding a beat on its own terms and started demanding forward proof that hyperscaler AI infrastructure spending isn't slowing down. Growing investor unease about the sustainability of cloud providers' capital expenditure on AI compute has made the Q3 guide, not the Q2 result, the number that will actually move the market tomorrow.
This is the closest thing the AI industry has to a single quarterly referendum on itself, since Nvidia sits at the center of nearly every other AI story this year, from OpenAI's compute deals to the data center buildouts state governments are now trying to regulate. A guide toward or above $100 billion for Q3, with data center growth holding near this quarter's pace and any lift to the China assumption, is the outcome that would finally reward a stock that has spent much of 2026 refusing to move much even after strong quarters. A guide that merely matches consensus, or a gross margin slipping below the mid-70s, risks another shrug from a market that has become numb to beats it now treats as the baseline rather than the story.
Reddit's Presence in ChatGPT's Answers Quietly Collapsed 86 Percent in Two Weeks
Reddit's share of ChatGPT Search citations fell from a steady 3.83 percent average between July 18 and August 7 down to just 0.52 percent by August 14 to 17, an 86.4 percent relative decline, according to tracking data from AI visibility platform Promptwatch. The drop happened almost entirely within a single week, and Reddit had been one of the most consistently cited domains in ChatGPT's answers through early August, at one point in April accounting for as much as 4.14 percent of all citations, the single highest share of any domain on the web.
Promptwatch traces the collapse to a specific, unannounced change in how ChatGPT Search works: on August 8, the proportion of ChatGPT's background fanout queries, the sub-searches the model runs while assembling an answer, using a site-scoped search operator jumped from roughly 0.4 percent to nearly 17 percent in a single day and kept climbing afterward. That shift effectively means ChatGPT started asking specific trusted domains directly for answers far more often, rather than running broader open web searches that were more likely to surface Reddit threads through general search results. Google's AI Overviews and AI Mode showed only a gradual decline in Reddit citations over the same window, roughly 11 and 30 percent respectively, not the single-day cliff seen in ChatGPT, which points toward a ChatGPT-specific mechanism rather than any broader shift away from Reddit as a source across the AI search industry.
The timing produced some understandable confusion, since the drop also coincided with OpenAI's GPT-5.6 Sol becoming the default ChatGPT model in early July, and separately with speculation that Reddit itself might be restricting crawler access following earlier reporting that Reddit was weighing whether to limit Google's access to its content for AI training. Search Engine Journal's own analysis pushed back on any single tidy explanation, noting the citation drop doesn't fully align with the query fanout theory alone, and pointed instead to a possible compounding factor: Google's September 2025 removal of a search parameter that many third-party data providers relied on to pull deep search results, the same providers OpenAI reportedly buys some of its background search data from, which may have made it structurally harder for any provider to surface Reddit's threads regardless of what ChatGPT itself changed. OpenAI has not responded publicly to requests for comment on the change.
Reddit's own business context makes the timing sting more than it otherwise might: the citation collapse landed the same week Reddit joined the S&P 500, and the company has a standing 2024 data-licensing deal with OpenAI that runs separately from ordinary web crawling. None of that licensing relationship explains why organic citations specifically cratered, and that gap is exactly the risk every publisher now faces in an AI-mediated search world: a platform's citation behavior can shift overnight because of a backend tweak nobody announced, with real referral-traffic consequences, and no clear appeals process or advance warning for the site on the losing end. Whether this specific change reflects OpenAI genuinely improving answer quality by favoring more authoritative sources, or simply an unintended side effect of a broader search infrastructure update, is a distinction Reddit and every other publisher watching this story have no reliable way to verify from outside.
What This Means for AI in the Coming Days
Both of today's stories are about how much of the AI industry's fortune now rides on decisions made inside a small number of companies with very little outside visibility into the reasoning behind them. Nvidia's earnings call this evening will move trillions of dollars in market value based on a Q3 guide and a single sentence about China that the company has deliberately kept ambiguous for months, and neither investors nor competitors have any way to independently verify Nvidia's China assumptions before the number lands. Reddit's citation collapse is the same dynamic playing out at a smaller scale: an unannounced backend change at OpenAI reshaped a meaningful slice of the open web's referral traffic overnight, and the company most affected still doesn't have a confirmed explanation two and a half weeks later.
Watch Nvidia's 5 p.m. ET call closely for any specific language on China licensing progress, since that single data point is likely to matter more to tomorrow's stock movement than the headline revenue beat itself, and watch whether other AI hardware and hyperscaler names move in sympathy given how central Nvidia's results are to the broader AI infrastructure narrative. On the search side, keep an eye on whether other major publishers report similar sudden citation swings in the coming weeks, since Reddit's experience suggests these query-behavior changes can happen with no warning and no public explanation, which is exactly the kind of instability that makes planning a content or SEO strategy around any single AI platform's current behavior a genuinely risky bet.
Recommended News
• Daily AI News: Top 5 Stories Every Morning
• Weekly AI Roundups: 15+ Stories Every Monday
• Best Claude AI Prompts 2026
• Best ChatGPT Prompts 2026
Frequently Asked Questions
When does Nvidia report earnings and what is the guidance?
Nvidia reports fiscal second-quarter 2027 earnings after market close on August 26, 2026, with results expected around 4:20 p.m. ET and a call at 5:00 p.m. ET; the company guided to revenue of $91 billion, plus or minus 2 percent, with roughly 75 percent gross margin, assuming zero China data center revenue.
Why does China matter so much to Nvidia's earnings?
Nvidia's official guidance excludes any data center compute revenue from China due to ongoing export licensing uncertainty, and the company has said it could ship between $2 billion and $5 billion in H20 chip revenue this quarter if the geopolitical environment permits, making any updated China commentary a bigger potential stock catalyst than the headline revenue number.
What happened to Reddit's citations in ChatGPT?
Reddit's share of ChatGPT Search citations fell from a steady 3.83 percent average in late July and early August 2026 to just 0.52 percent by mid-August, an 86.4 percent relative decline, according to tracking firm Promptwatch, coinciding with a change in how ChatGPT's background search queries work.
Did OpenAI confirm why Reddit's citations dropped?
No. OpenAI has not publicly responded to requests for comment on the change as of this week, and analysts have proposed multiple possible contributing factors, including a shift in ChatGPT's query fanout behavior around August 8 and a 2025 change to Google's search infrastructure that may have made deep search results harder for data providers to access.
Is Reddit's citation drop unique to ChatGPT?
Largely yes. Google's AI Overviews and AI Mode showed only a gradual decline in Reddit citations over the same period, roughly 11 and 30 percent respectively, not the sudden single-day cliff observed in ChatGPT, suggesting the cause is specific to a change in how ChatGPT itself selects sources rather than a broader shift away from Reddit across AI search platforms.
Keep Up With Tomorrow's AI News
Follow along at promptailearning.com/ai-news for daily AI news, weekly roundups, and monthly recaps, every story, every week, no paywalls.
References
1. TIKR, Aug 2026: Nvidia reports Q2 earnings August 26, the Q3 guide and China decide the stock
2. Yahoo Finance, Aug 25, 2026: Will Nvidia stock soar after Aug. 26? Here's what history shows
3. Regards of Wallstreet, Aug 2026: When does Nvidia report earnings? Wednesday, August 26, after the close
4. Search Engine Journal, Aug 2026: Why Reddit's ChatGPT citation drop isn't fully explained
5. Forbes, Aug 20, 2026: Reddit nearly vanishes from ChatGPT citations after OpenAI search change
6. Promptwatch, Aug 2026: Why did ChatGPT stop citing Reddit? Inside the August 2026 citation collapse
7. CryptoBriefing, Aug 2026: Reddit's ChatGPT Search citations drop 86% in August
EXPLORE MORE ON PROMPTAILEARNING.COM
STAY UPDATED WITH AI NEWS
Follow the full AI news series and never miss a story:
Daily AI News: Top 5 Stories Every Morning
Weekly AI Roundups: 15+ Stories Every Monday
Monthly AI Recaps: Full Archive by Month
LEARN THE MODELS MAKING THESE HEADLINES
The models in today's news are only useful if you know how to prompt them well. Start here:
Best Claude AI Prompts 2026: 25+ Types With Examples
Best ChatGPT Prompts 2026: 200+ Real Examples
Best Gemini AI Prompts 2026: 100+ Templates
BUILD SKILLS THAT COMPOUND
Reading AI news is step one. Building skills with these models is step two:
Free Prompt Library: 213+ Copy-Paste Templates
Start Prompt Engineering: Free Course for All Levels
Coding Prompts for Developers: Production-Ready Templates
USE PROMPTS FOR THE NEWS TOPICS YOU READ ABOUT TODAY
Every story in today's post maps to a real use case. These prompt categories help you act on what you read:
Business and Strategy Prompts: Analysis, Pitch Decks, OKRs
Writing and Content Prompts: Emails, Case Studies, White Papers
ABOUT THIS BLOG
promptailearning.com publishes free daily AI news, weekly roundups, monthly recaps, prompt guides, model comparisons, and course content for anyone who wants to get better at using AI. Written by Swatantra Verma. No paywalls, no fluff.
Connect With Us
Email: contact@promptailearning.com
Founder: Swatantra Verma on LinkedIn
Co-Founder: Prateek Patel on LinkedIn
Company LinkedIn: Prompt AI Learning
Company X: @promptailearnin