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AI Tools in Marketing: How 75% of Marketers Are Using ChatGPT for Advertising

50% of users want human verification to trust AI search, while 68% use AI to answer questions. Explore trust metrics, usage patterns, and the path to 36M US users by 2028.

JK
John Kyprianou
SEO Expert
June 1, 2025
8 min read

The battle for user trust in AI-powered search is reshaping how technology companies approach product development and user experience design.

While AI capabilities continue advancing at breakneck speed, user adoption hinges on fundamental questions of trust, reliability, and perceived value. The data reveals fascinating patterns about who uses AI search, why they trust it, and what barriers prevent broader adoption.

Leading use cases of generative artificial intelligence worldwide in 2023, by share of usage

Understanding these patterns becomes crucial as the market prepares for explosive growthβ€”from 15 million US adults using AI for search in 2024 to a projected 36 million by 2028.

The Current Usage Reality

The diversity of AI use cases reveals how users are integrating artificial intelligence into their daily routines across entertainment, education, and productivity categories.

Fun leads at 38% of usage, followed closely by learning at 34% and writing assistance at 28%. This distribution suggests users are comfortable experimenting with AI for low-stakes applications before trusting it with more critical tasks.

The progression from entertainment to education to professional applications indicates a natural adoption curve where users build confidence through positive experiences in less consequential areas.

Marketing Industry Leading Adoption

Professional adoption shows distinct patterns, with marketing professionals emerging as early and enthusiastic AI adopters.

Leading generative artificial intelligence (AI) tools and platforms used in marketing and advertising worldwide as of July 2023

ChatGPT dominates marketing applications with 75.2% adoption among advertising and marketing professionals. This represents one of the highest professional adoption rates across any industry, suggesting marketing teams have successfully integrated AI into their workflows.

Bing and Bard each capture 16.8% of marketing usage, indicating professionals are experimenting with multiple platforms rather than committing exclusively to one solution.

The marketing industry's rapid adoption provides a blueprint for how other professional sectors might embrace AI tools for content strategy and business applications.

Trust Requirements and Barriers

User trust in AI search depends heavily on transparency and verification mechanisms that address fundamental concerns about accuracy and reliability.

Research from 2024 reveals specific factors that would improve user trust in AI-powered search engines. Human verification emerges as the top requirement, with 50% of users indicating this would increase their confidence in AI search results.

Primary Trust Factors:

  • Human verification (50%): Users want human oversight of AI-generated content
  • Source transparency: Clear attribution and reference citation
  • Error acknowledgment: Honest communication about AI limitations
  • Gradual trust building: Positive experiences over time

Privacy regulations and data protection measures also factor significantly into user trust calculations, though specific percentages vary by demographic and use case.

Demographic Trust Patterns

Age emerges as a crucial factor in AI trust and adoption patterns, with younger users showing significantly higher confidence in AI decision-making capabilities.

Trust in AI's ability to make unbiased decisions varies dramatically across age groups. Younger users demonstrate greater willingness to rely on AI for important decisions, while older demographics maintain skepticism about algorithmic objectivity.

This generational divide has profound implications for businesses targeting different age segments. SEO consultants working with diverse client bases need strategies that address varying comfort levels with AI-powered solutions.

Age-Based Trust Patterns:

  • 18-34 years: High trust in AI objectivity and decision-making
  • 35-54 years: Moderate trust with emphasis on verification
  • 55+ years: Lower trust requiring substantial proof and gradual introduction

Current and Projected User Numbers

The growth trajectory for AI search adoption shows remarkable acceleration, with projections indicating more than doubling of user base over four years.

US adults using generative AI for online search grew from 15 million in 2024 to projected 36 million by 2028. This represents a compound annual growth rate that validates massive industry investment in AI search technologies.

The growth pattern suggests AI search is moving from early adopter phase into early majority adoption, creating significant opportunities for businesses to capture market share during this expansion period.

Growth Implications:

  • Market expansion: Doubling user base creates new customer acquisition opportunities
  • Platform competition: Multiple AI search tools competing for growing market
  • Business adaptation: Companies must prepare for AI-native user expectations
  • Content strategy evolution: Need for AI-optimized content and technical SEO approaches

Use Case Analysis and Patterns

Specific AI applications reveal how users prioritize different types of assistance, with question answering emerging as the dominant use case.

Among US users, 68% utilize generative AI to answer questions, while 54% use it for brainstorming and ideation. These top use cases align with AI's strengths in information synthesis and creative assistance.

The preference for question answering over other applications demonstrates users' desire for immediate, comprehensive responses rather than traditional search result lists. This shift requires businesses to optimize content for direct answer formats.

Primary Use Cases by Popularity:

  • Question answering (68%): Information discovery and research
  • Brainstorming (54%): Creative ideation and problem-solving
  • Writing assistance: Content creation and editing support
  • Learning support: Educational applications and skill development

Activity-Specific Adoption Patterns

Different AI tools show varying usage patterns across work, learning, and entertainment applications, revealing how users segment their AI interactions.

ChatGPT usage data from February 2024 shows balanced adoption across multiple activity categories. Work applications account for 20% of usage, while learning and entertainment each represent 17%, indicating users see AI as valuable across diverse contexts.

This balanced usage pattern suggests AI has achieved broad utility rather than being confined to specific niches. The implications for business strategy include recognizing AI as a general-purpose tool rather than specialized application.

Trust Building Through Experience

User confidence in AI search builds incrementally through positive experiences and transparent communication about capabilities and limitations.

Businesses seeking to capture user trust should focus on consistency, accuracy, and clear communication about AI system capabilities. Users respond positively to platforms that acknowledge limitations while delivering reliable performance within stated parameters.

Trust Building Strategies:

  • Consistent performance: Reliable results across different query types
  • Transparent limitations: Clear communication about what AI can and cannot do
  • Source attribution: Providing references for AI-generated responses
  • Gradual capability expansion: Building trust before introducing advanced features

Business Implications for Different Sectors

The trust and adoption patterns create specific opportunities and challenges for businesses across various industries.

Professional Services Law firms, consulting agencies, and local SEO providers can leverage AI adoption patterns to enhance service delivery while addressing client trust concerns through transparent AI integration.

E-commerce and Retail Online retailers can capitalize on growing AI search adoption by optimizing product information for AI discovery while building trust through accurate, comprehensive product data.

Healthcare and Finance Industries requiring high trust levels can use the gradual adoption model to introduce AI capabilities slowly while maintaining human oversight and verification processes.

Future Adoption Trajectories

The path from 15 million to 36 million US users over four years provides insights into how AI search adoption might evolve across different user segments.

Early majority adoption typically follows predictable patterns, with trust barriers gradually diminishing as social proof and positive experiences accumulate. The projected growth suggests we're entering a phase where AI search moves from novelty to necessity for many users.

Expected Evolution:

  • Trust normalization: Skepticism decreasing as AI performance improves
  • Use case expansion: AI search for more complex and critical tasks
  • Integration deepening: AI becoming embedded in daily workflows
  • Expectation elevation: Users demanding AI capabilities in more contexts

Strategic Recommendations

Understanding trust and adoption patterns enables businesses to develop strategies that align with user expectations and comfort levels.

Immediate Actions Build trust through transparency and consistent performance. Implement AI capabilities gradually while maintaining human oversight. Focus on use cases where AI provides clear value without replacing critical human judgment.

Long-term Strategy Prepare for a user base that expects AI-powered experiences across all digital touchpoints. Invest in AI literacy for customer-facing teams. Develop content and service strategies optimized for AI discovery and interaction.

The data reveals we're at an inflection point where AI search adoption accelerates from niche application to mainstream expectation.

Businesses that understand the trust factors driving adoption and address user concerns proactively will capture disproportionate value as the market expands from 15 million to 36 million users.

The key lies not in pushing AI capabilities on reluctant users, but in building trust through consistent performance, transparent communication, and gradual capability expansion that respects user comfort levels.

Success in the AI search era belongs to organizations that earn user trust while delivering genuine value through thoughtful AI integration.


Looking to build user trust while integrating AI into your business strategy? Our website audits and backlink building services can help establish the authority and credibility that users value in the AI search era.

John Kyprianou

John Kyprianou

SEO Specialist

John is an experienced SEO specialist with over 10 years of experience in digital marketing. He specializes in technical SEO, content strategy, and helping businesses improve their online visibility.