How Optimizely Prevents AI Hallucinations: Building Trust Through Quality Control

written by Lance Farquhar

|

October 2025

According to Optimizely, the technical and strategic approaches they use to ensure AI-generated content is accurate, reliable, and grounded in reality. 

The Hallucination Problem 

One of the biggest challenges with generative AI is its tendency to "hallucinate"—to generate information that sounds plausible but is factually incorrect or completely made up. This isn't a bug; it's a fundamental characteristic of how large language models work. They're designed to generate text that sounds natural and coherent, not necessarily to be factually accurate.

For enterprise applications, this is a critical problem. When you're using AI to generate marketing content, analyze performance data, or create campaign briefs, accuracy isn't just nice to have—it's essential. A single piece of incorrect information can damage your brand, mislead your customers, or lead to poor business decisions.

At Optimizely, they've built multiple layers of quality control to address the hallucination challenge. Their approach combines technical solutions like evaluation loops and specialized agents with strategic processes like using appropriate models to ensure that AI-generated content is not just coherent, but accurate and reliable. 

The Evaluation Loop: AI That Checks Itself 

How It Works 

  1. Content Generation - An agent creates content based on your brief
  2. Quality Evaluation - Another specialized agent evaluates the output against specific criteria
  3. Feedback and Scoring - The evaluation agent provides detailed feedback and scores
  4. Iterative Improvement - The original agent uses this feedback to improve the content
  5. Repeat Until Satisfied - The process continues until the evaluation agent determines the content meets quality standards 

What Gets Evaluated 

The Optimizely evaluation agents check content against multiple criteria:

  • Brand Voice and Tone - Does it match your brand guidelines?
  • Factual Accuracy - Are the claims supported by real data?
  • Brief Adherence - Does it address all the requirements in the brief?
  • Target Audience Alignment - Is it appropriate for the intended audience?
  • Channel Appropriateness - Does it work for the specific platform or medium?

This creates a self-improving system where AI agents hold each other accountable for quality and accuracy.

Specialized Agents: Purpose-Built for Accuracy 

The Problem with Generic AI 

Generic AI models are designed to be versatile, but this versatility comes at a cost. They're not optimized for specific tasks, which can lead to inconsistent quality and higher error rates.

The Specialized Agent Approach

Optimizely has built specialized agents that are purpose-built for specific tasks. These agents are: 

  • Highly Focused - They're designed to do one thing very well 
  • Predictable - They produce consistent, reliable outputs 
  • Optimized - They're fine-tuned for specific use cases 

Example: Image Analysis Agent

Consider an agent designed to analyze whether an image contains specific colors:

  • Input: An image 
  • Question: "Does this image contain black color?" 
  • Output: Restrict the answer to only "yes" or "no" (no additional commentary or speculation) 

By constraining the agent to only respond with these two options, they eliminate the randomness and ensure consistent, reliable results. 

Quality Control Through Configuration

 Model Selection and Configuration

Different tasks require different levels of AI capability. Optimizely automatically selects the right model and configuration for each task:

  • Simple Classification - Fast, cost-effective models
  • Creative Content - Models optimized for ideation and variation
  • Technical Writing - Models with strong reasoning capabilities
  • Factual Analysis - Models optimized for accuracy and grounding

Creativity vs. Accuracy Trade-offs

They also control the "creativity" level of the AI agents:

  • High Creativity - For ideation, brainstorming, and creative content
  • Low Creativity - For factual reporting, data analysis, and technical content
  • Balanced - For general content that needs both accuracy and engagement

This ensures that the AI's output matches the requirements of the specific task. 

The Business Impact

Trust and Reliability

By preventing hallucinations and ensuring accuracy, builds trust with Optimizely’s customers. They know they can rely on AI-generated content without constantly checking for errors.

Efficiency Gains

Quality control doesn't slow down the process—it speeds it up. By catching and fixing errors automatically, they reduce the need for manual review and revision.

Brand Protection

Accurate, on-brand content protects your brand reputation and ensures consistent messaging across all channels. 

Conclusion: Building Trust Through Quality 

Preventing AI hallucinations isn't just a technical challenge—it's a business imperative. At Optimizely, they've built multiple layers of quality control to ensure that AI-generated content is accurate, reliable, and trustworthy. 

The approach combines:

  • Technical Solutions - Evaluation loops, grounding, and specialized agents
  • Strategic Processes - Quality monitoring and continuous improvement
  • Human Oversight - Keeping humans in the loop for critical decisions
  • Transparency - Clear communication about AI capabilities and limitations

The result is AI that you can trust—AI that enhances human capabilities rather than replacing them, and AI that delivers real business value without the risks of misinformation or inaccuracy.

In the age of AI, quality isn't just a feature—it's the foundation of trust. And trust is what enables AI to transform how we work, create, and communicate. 

Lance Headshot

Director of Technology, Optimizely

Lance Farquhar

Lance is a seasoned leader with 25+ years in software engineering, blending technical expertise with business acumen. With a track record of managing global teams and delivering high-quality solutions, he excels at fostering collaboration and solving complex challenges to achieve exceptional outcomes.

X
Cookies help us improve your website experience.
By using our website, you agree to our use of cookies.
Confirm