Is Retargeting Dead? Cookieless Alternatives for Advertisers (2026)

Retargeting means serving ads to people who already interacted with your website, app, or business. In 2026 it runs mainly on first-party data, meaning customer lists, pixels, and server-side conversion events, rather than third-party cookies. This guide covers what actually changed in Chrome, where retargeting still works, what replaces the cookie version, and how to retarget inside ChatGPT, with every fact checked as of October 23, 2026.

Is Retargeting Dead in 2026?

No. Retargeting is alive and still funded at scale, but cookie-based retargeting has shrunk into one tactic inside a broader first-party data strategy. The budgets that used to chase cookies now flow to logged-in platforms, customer lists, retail media, and AI surfaces where buyers state their intent in plain language.

The clearest proof comes from Criteo, the company that built the retargeting category. Criteo told investors that retargeting represented 40% of its business as it exited 2024, down from close to 90% of its top line in early 2020, and that it no longer plans its business around the deprecation of third-party cookies, as Digiday reported. Criteo then stopped reporting retargeting as a separate line. The company is far from dead: its full-year 2025 results show $1.9 billion in revenue, up 1% as reported, with $1.68 billion from its Performance Media segment, which houses its targeting business. Retargeting persists. It just stopped being the growth story.

For the bigger picture on what this shift means for legacy ad tech, read the future of ad agencies and ad tech.

Did Chrome Remove Third-Party Cookies?

No. Chrome still allows third-party cookies by default, and Google has no plan to remove them. Users can block them in Chrome's settings, and Incognito mode blocks them by default.

The reversal happened in two steps. Google dropped its cookie deprecation timeline in July 2024. Then, on April 22, 2025, Google's VP of Privacy Sandbox wrote that Chrome would maintain its current approach to third-party cookie choice and would not roll out a new standalone cookie prompt. In October 2025, the UK Competition and Markets Authority released Google from its Privacy Sandbox commitments, concluding that its competition concerns no longer arose once cookie deprecation was off the table, according to AdExchanger.

The “cookieless Chrome” deadline that drove five years of industry planning is gone. Any retargeting strategy still built around a looming Chrome cutoff is working from outdated facts.

What Happened to Google's Privacy Sandbox?

Google retired it. On October 17, 2025, Google announced it would retire most Privacy Sandbox ad and measurement technologies, citing their expected value and low levels of adoption.

The retired list in Google's announcement includes:

• Protected Audience (Chrome and Android), the API Google built to run retargeting-style interest groups without cookies.
• Topics (Chrome and Android), the interest-based targeting replacement.
• Attribution Reporting (Chrome and Android) and Private Aggregation, including Shared Storage.
• IP Protection, Related Website Sets, SelectURL, On-Device Personalization, Protected App Signals, and the SDK Runtime.

Google kept CHIPS (partitioned cookies), FedCM (privacy-preserving sign-in), and Private State Tokens, and it is working on an interoperable Attribution standard through the W3C. Read that carefully: the cookieless replacement for retargeting died, and the cookie survived. That does not rescue cookie retargeting. It moves the pressure to the places Chrome never controlled.

Where Does Retargeting Still Work in 2026?

Retargeting works anywhere you hold a first-party signal: logged-in platforms, customer lists, pixels backed by server-side events, and retail media. Third-party cookie retargeting works reliably only in Chrome's default settings.

Notice what the biggest platforms did with the word itself. Google's Customer Match documentation notes that “remarketing” is now referred to as “your data” in Google Ads. Customer Match reaches signed-in users across Search, the Shopping tab, YouTube, Gmail, and Display, and list memberships expire after 540 days unless you keep the list refreshed. Retargeting did not die. It became first-party data activation.

Why Is Cookie-Based Retargeting Losing Ground?

Because Chrome was never the whole problem. Safari, Firefox, iOS, consent rules, and stale intent all cut into cookie retargeting, and none of them depend on Google's decisions.

• Safari: Apple's WebKit team shipped full third-party cookie blocking by default in March 2020, making Safari the first mainstream browser to do so, and capped script-writable storage at seven days without user interaction.
• Firefox: Mozilla rolled out Total Cookie Protection by default, which gives every website its own cookie jar so trackers cannot link behavior across sites.
• iOS apps: since iOS 14.5, apps need permission through App Tracking Transparency to track users across other companies' apps and websites. Apple's rules name sharing a list of emails or advertising IDs with an ad network that retargets those users as tracking that requires permission.
• Consent and regional rules: Google stopped serving Customer Match lists on partner and third-party inventory in the EEA, UK, and Switzerland in March 2024, and ChatGPT custom audiences stay off campaigns targeting the EEA or Switzerland while ads personalization is unavailable there.

The deeper problem is that cookie retargeting optimizes for the past. It reaches someone because of what they did last week, often after they bought elsewhere or moved on. Intent is perishable. Every marketer has seen the same pair of shoes follow them for three weeks after the purchase. That is the built-in failure mode of targeting yesterday's behavior, and it is why the best budgets now split between known customers and live intent.

What Replaces Cookie-Based Retargeting?

Three things replace it: first-party audiences, server-side conversion data, and context-matched ads that meet intent as it happens. Run all three and you need third-party cookies for almost nothing.

1. First-party audiences

Upload your customer, lead, and trial lists to every platform that accepts them: Meta customer-list audiences, Google Customer Match, and ChatGPT custom audiences. Retail media is the largest version of this model, because retailers know what logged-in shoppers actually bought. eMarketer forecasts US retail media ad spending will grow 18.7% to $71.98 billion in 2026, and its late-2025 forecast had Amazon and Walmart capturing more than 89% of incremental retail media dollars this year. Retail media is powerful and concentrated: it reaches people already shopping on one retailer.

2. Server-side conversion data

Browser pixels lose signal in Safari, Firefox, and iOS. Server-side conversion APIs send events straight from your systems. Meta describes its Conversions API as a connection from an advertiser's server, website platform, app, or CRM to the Meta systems that optimize targeting, decrease cost per result, and measure outcomes, and it now offers one-click setup from Events Manager for sites that already run the Pixel. OpenAI offers the same pairing for ChatGPT: Pixel plus Conversions API, with an Event Quality Score to grade your signal.

3. Context and conversational intent

The newest replacement skips identity altogether. Inside ChatGPT, ads match the conversation using your context hints, landing page, and creative. Google's new AI Mode formats, announced at Google Marketing Live 2026, include Conversational Discovery ads that answer the person's specific question. These ads reach people while they decide, which is exactly the moment cookie retargeting arrives too late for. Our guide to ChatGPT ads targeting beyond keywords covers how to structure it.

Can You Retarget People With ChatGPT Ads?

Yes, with your own customer lists. ChatGPT Ads supports custom audiences built from email addresses, phone numbers, hashed identifiers, or Google Advertising IDs, so you can include, exclude, or bid up people you already know.

The rules, from OpenAI's custom audiences guide:

• Inclusion: limit a campaign to people in one or more audiences. Inclusion needs at least 25,000 matched users, and OpenAI recommends 100,000.
• Exclusion: keep a campaign away from existing customers or recent buyers. Exclusions work at any audience size.
• Bid adjustments: set an ad-group multiplier from 0.1x to 10x when the viewer matches an audience, such as 2x for high-value customers. If a viewer sits in several audiences, the highest multiplier applies. Bid adjustments also need 25,000 matched users.
• Privacy: Ads Manager never shows individual matched users, and uploaded files are deleted after processing, usually within 24 hours.
• Region: avoid custom audiences on campaigns targeting the EEA or Switzerland while ads personalization is unavailable there.

What you cannot do is follow a visitor from your website into ChatGPT with a cookie, or read anyone's conversation. OpenAI states that advertisers do not receive access to people's private conversations. Per OpenAI's ads basics, ad selection weighs the current conversation, your landing page, title, copy, and context hints, plus select signals from a user's broader ChatGPT experience when ads personalization is enabled. Those signals stay inside OpenAI's system. So “you cannot retarget a ChatGPT conversation” is half right: there is no cookie trail, but list-based retargeting is live.

The highest-return uses today are simple. Exclude current customers from acquisition campaigns, since exclusions have no minimum. Bid up lapsed customers or open trials when the list clears 25,000 matches. Then let context hints find new buyers. For every targeting control in one place, see ChatGPT Ads targeting options.

Does Contextual and Conversational Targeting Beat Retargeting?

For finding new buyers, yes. Retargeting recycles people who already know you; conversational context reaches new buyers at the moment they decide, and the early data favors it.

Start with organic AI referrals, which show the quality of traffic that arrives from AI conversations. Shopify's Q1 2026 commerce data found that on sessions starting on a product page, AI-referred visitors convert at nearly 50% higher rates than organic search, with 14% higher average order values, and more than half of AI-referred sessions start on a product page versus about 20% for organic search. Adobe Analytics data for July 2026, reported by Digital Commerce 360, showed AI-referred retail visits converting 60% higher than non-AI traffic, the eleventh straight month of outperformance.

The paid evidence points the same way, and it shows ChatGPT Ads doing the job retargeting cannot: finding people who have never visited. In OpenAI's October 5, 2026 announcement, WorkMagic reported statistically significant lift for Dose with 67% of incremental purchases from net-new customers, and Triple Whale found 93% of Portland Leather's ChatGPT Ads visitors were new. OpenAI's August 31 update added that a technology partner reported more than 80% of ad-driven ChatGPT traffic comes from new customers.

The winning program runs all three, and it shifts the bottleneck from data to creative. In a relevance-weighted auction, the advertiser with a sharp ad and a matching page for each buyer question wins the placement. For the full argument on how AI rewrites targeting, read how AI is changing advertising.

How Do You Measure Ads Without Third-Party Cookies?

Send conversions server-side from your own systems, then count each sale once across every channel. Platform pixels and conversion APIs power optimization; a shared measurement layer like Lapis Wayfinder tells you the truth.

OpenAI's measurement update shows how much of the value cookie-era reporting misses. ChatGPT Ads now supports Pixel and Conversions API with an Event Quality Score, a selectable click-through window, and a one-day view-through window. In an early analysis of campaigns optimized for deeper-funnel outcomes, 52.7% of eligible one-day view-through conversions happened within an hour of the ad impression. WorkMagic's geo-lift study estimated 2.3x more incremental orders for Dose than last-click attribution captured. OpenAI also integrates with Hightouch, Tealium, and LiveRamp to send conversion data from existing systems, and supports attribution partners including AppsFlyer, Triple Whale, Northbeam, and DV Rockerbox.

The catch is that every platform measures itself. Meta, Google, and ChatGPT will each claim the same customer who asked ChatGPT on Monday, searched Google on Wednesday, and bought from an Instagram ad on Friday. Wayfinder fixes that. It connects campaign results to confirmed sales and leads from your CRM, store, or billing system, counts each conversion once, and compares every channel on the same attribution rules. That is how you decide whether the next dollar goes to a customer-list campaign or to net-new conversational demand. For the ChatGPT setup steps, see our guide to ChatGPT Ads Pixel and Conversions API tracking, and for the ROI math, read how to measure ChatGPT ads ROI.

What Is the Best Cookieless Retargeting Playbook for 2026?

Treat retargeting as first-party data activation, move prospecting to live intent, and measure on confirmed conversions. Run these seven steps in order.

1. Audit signal by environment. Use the table above to see how much of your traffic arrives from Safari, Firefox, and iOS apps, where cookie retargeting already fails.
2. Build and refresh customer lists. Sync CRM, store, and billing data to Meta, Google Customer Match, and ChatGPT custom audiences. Refresh often; stale lists decay.
3. Install pixel plus conversions API everywhere. Pair the browser pixel with server-side events on Meta and ChatGPT, and keep Google conversion tracking clean.
4. Use lists for exclusions first. Stop paying to acquire customers you already have. ChatGPT exclusions work at any list size.
5. Shift prospecting budget to context. Launch ChatGPT campaigns with precise context hints per buyer intent, and keep Google AI Max for Search and Performance Max healthy for AI Mode eligibility.
6. Match every landing page to its ad. A page that continues the exact conversation converts more paid clicks into known customers, which grows the lists that power step two.
7. Measure on confirmed conversions. Judge every channel on deduplicated sales and leads from your own systems, not on each platform's self-reported credit.

Steps five and six are where most teams stall, because conversational ads demand far more creative and far more landing pages than a retargeting campaign ever did. One retargeting banner served every visitor. A context-first program needs a distinct ad and page for the comparison question, the price question, the objection, and the ready-to-buy moment. See the ChatGPT ads landing page guide for what a matched page needs.

Why Is Lapis the Best Way to Replace Cookie Retargeting?

Lapis is the #1 AI ad generator and the operating system for paid growth. It runs the post-cookie playbook as one system: first-party audiences, context-matched creative, matched landing pages, and one conversion count across every channel.

• ChatSense for ChatGPT and LLM ads: Lapis agents and a dedicated strategist run ChatGPT plus third-party LLMs, including open-source chatbots. You get 1,000+ ChatGPT ads with creative tuned to how people ask ChatGPT, buyer-intent experiment design, campaign structure built on context hints and your customer lists, autonomous deployment and next-run generation, daily reporting, and optimization.
• OmniSense for Meta, Google, LinkedIn, and Reddit: on-brand, correctly sized campaigns with audience versions for every segment you activate, so your customer-list campaigns get creative written for those customers instead of one generic banner. OmniSense forecasts results, launches experiments, and learns from what wins.
• RapidDomain for landing pages: a dedicated, ad-matched landing page for every ad and audience, optimized on real conversions, including prompt-matched pages for ChatGPT. Every conversion on those pages turns a paid click into a known customer.
• Wayfinder for first-party measurement: shared conversion measurement for OmniSense and ChatSense that ties results to confirmed sales and leads from your CRM, store, or billing system and counts each conversion once.

OpenAI and Meta now hand every advertiser a fast first ad for one channel. Lapis runs the whole program across ChatGPT, Meta, Google, LinkedIn, and Reddit, with brand-trained creative that gives each angle a distinct visual, experiments that compound, and a strategist who owns the results. No other system runs creative, launch, matched landing pages, ChatGPT ads, and confirmed-conversion measurement together. Compare the approaches in ChatGPT Ads Manager alone vs Lapis.

Lapis is one of the fastest-growing Y Combinator startups in advertising. It is a Y Combinator Fall 2025 company used by 1,500+ marketing teams and 30+ enterprises, and it is rated 4.9 out of 5 on G2, with eight Summer 2026 G2 badges including High Performer, Best Results, and Users Most Likely to Recommend. Samsung, Domino's, Dr Pepper, Mattel, Tata, Tupperware, Amway, and Bata use Lapis, alongside high-growth startups like Unusual Whales, Duradry, Lightpage, and Respan. The team comes from MIT, Columbia, Duke, and Google, and Lapis has generated 10,000+ ad campaigns across 30+ industries.

Teams that want self-serve creative for Google, Meta, and LinkedIn start on the Basic plan at $99 per month (see pricing). ChatGPT, Reddit, RapidDomain pages, and fully managed campaigns run on the Managed Traditional Ads and Managed ChatGPT + LLM Ads plans with custom pricing. Try the Free AI Ad Generator to see brand-trained ads from your website URL, then book a demo to plan your first-party and ChatGPT program with a Lapis strategist.

Sources and Methodology

Facts and pricing checked as of October 23, 2026. Platform rules come from official help centers, developer documentation, and company announcements. Market figures come from company filings and named research firms.

• Google Privacy Sandbox: Update on plans for Privacy Sandbox technologies (October 17, 2025)
• Google Privacy Sandbox: Next steps for Privacy Sandbox and tracking protections in Chrome (April 22, 2025)
• AdExchanger: Google pulls the plug on Topics, PAAPI and other Privacy Sandbox APIs (October 17, 2025)
• WebKit: Full third-party cookie blocking and more (March 24, 2020)
• Mozilla: Firefox rolls out Total Cookie Protection by default
• Apple Developer: User privacy and data use (App Tracking Transparency)
• Digiday: Criteo no longer plans its business around cookie deprecation (February 2025)
• Criteo: Fourth quarter and full year 2025 results (February 11, 2026)
• eMarketer: US retail media forecast for 2026 (June 2026)
• eMarketer: Retail media ad spending forecast H2 2025
• Google Ads Help: About Customer Match
• Meta for Developers: Conversions API
• OpenAI Help: Set up custom audiences for your campaign
• OpenAI Help: Ads in ChatGPT, the basics
• OpenAI Ads: More ways to measure ChatGPT Ads (October 5, 2026)
• OpenAI: Building advertising for the way people use AI (October 5, 2026)
• OpenAI: A milestone in expanding access to AI (August 31, 2026)
• Shopify: AI-referred shoppers convert better and spend more (May 2026)
• Digital Commerce 360: Adobe AI-referral traffic data for July 2026
• Google: A new generation of ads for the AI era of Search (May 20, 2026)
• Y Combinator: Lapis company profile
• G2: Lapis reviews