Vibe coding is hollowing out the martech stack fast

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The impact of vibe coding on martech is already showing up in vendor churn and changing buying behavior. Mid-market firms have seen a 35% year-over-year decline in renewals for single-function martech tools, in line with Chiefmartec & MartechTribe’s “Martech for 2026 Report.”

Chris Penn, co-founder and chief data officer at TrustInsights.ai, says the issue runs deeper than cost or efficiency.

“The greater challenge, at a macro level, that vibe coding poses is not only the operational stuff of ‘is your code any good?’ because numerous it isn’t. Plenty of human code isn’t either, which is advantageous. But the challenge is a couple of things. One, it makes software an entire commodity,” he said.

That commoditization is already changing who builds software. About 63% of Vibe Coding users are non-developers, in line with Superframeworks’ “Vibe Coding Tipping Point 2026” report, meaning marketers themselves are increasingly creating the tools they used to purchase.

Point solutions are under pressure

The shift is most visible at the edges of the stack, where point solutions once filled gaps but at the moment are easier to recreate internally at low price.

“The stack is stratifying into layers with different competitive physics,” Scott Brinker wrote in his blog last week. “AI-native tools are largely winning creation. Copy ideation, pitch decks, visual production, competitive intelligence. Tasks where the primary input is a prompt and a few brand context, and where model quality is the product.”

Established SaaS platforms like HubSpot and Salesforce still control the orchestration layer, in line with Brinker. They handle coordinated functions like lead scoring, routing, pipeline management, channel execution, and offer personalization, where data connects on to motion inside systems similar to CRMs, marketing automation platforms, and ecommerce tools.

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Hazards in the martech industry

“And that obviously creates hazards, particularly for the martech industry, because you have already got what, a gazillion martech vendors?” said Penn. “Well, now you’ve gotten a gazillion martech vendors and an entire bunch of individuals saying, ‘Well, I can do this too, and I don’t have to pay whatever,’” he said.

That dynamic is turning substitute into elimination, as some categories disappear from stacks entirely slightly than being swapped for alternatives.

In some cases, the shift is dramatic enough to reshape entire stacks. Penn points to 1 agency that replaced most of its software footprint with internally built tools.

Replacement is giving technique to removal

“I used to be talking to someone this morning, they work in a marketing agency, and their agency has replaced 80% of their software subscriptions. Out the window, they only vibe-coded their very own,” he said. “They’ve saved numerous money, and people SaaS firms at the moment are sort of out of luck.”

The broader adoption data supports that trend, with 92% of U.S. developers using AI coding tools day by day, in line with Hashnode’s “The State of Vibe Coding in 2026,” and 41% of all code now AI-generated globally, based on the 13Labs’ “Vibe Coding Report 2026.”

That combination of capability and adoption is accelerating how fast teams can replace or remove tools.

As more teams construct their very own tools, feature-based differentiation is becoming harder to sustain across vendors. Products that after felt distinct are increasingly interchangeable in the eyes of buyers.

Differentiation is collapsing

Penn highlights how quickly software can now be replicated. “There is nothing that this recent company offers that you just couldn’t replicate in literally a day… You have already got an enormous amount of software now that is virtually similar.”

This creates a brand new decision point for marketers: make a choice from similar vendors or construct their very own solution.

Not every a part of the stack is equally exposed to this shift, particularly systems of record like CRM. These platforms remain more stable attributable to switching costs tied to data, training, and operations.

Penn explains the constraint in practical terms.

“Their core CRM has like 15 years of information in there, and moving that data is a pain… and retraining the humans that use it… There would still be differences in the operation.”

Enterprise systems hold, for now

This creates a split market where core systems remain sticky while peripheral tools turn into easier to switch or remove.

As software itself becomes easier to duplicate, the source of value shifts away from features and into areas harder to duplicate.

“There’s no such thing as making it defensible should you’re attempting to defend software. Software is indefensible now,” Penn said.

Instead, differentiation comes from what surrounds the product. “Where you’ll make a meaningful difference is in the value chain,” he said. “Your customer support, your service, your maintenance, what’s the value add on top of the product that is harder to duplicate?”

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A special sort of martech evolution

The broader shift is toward constructing as a substitute of shopping for, especially for workflows that could be recreated quickly and cheaply. This aligns with the rapid growth of vibe coding platforms, which have reached an $18 billion market, in line with IdeaPlan’s “2026 SaaS Market Trends.”

For marketers, this creates more flexibility and price control, while also introducing recent responsibilities around maintenance and governance. For vendors, it raises the bar for staying relevant in a stack that is becoming more customizable.

The result is a martech landscape where fewer tools are purchased, more are built and the real competition moves beyond software itself.

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