How Evertune Tracks AI Model Versions

Evertune is the only GEO platform that taps into AI models' APIs, allowing for insight into model version changes

Insights

October 23, 2025

Author

Madison Brisseaux

VP, Product Marketing

Why Model Versions Matter for Your Brand

Evertune is a Generative Engine Optimization (GEO) platform that tracks brand visibility across AI models and provides actionable recommendations. 

Model versions like GPT-4, GPT-4o, Claude Sonnet, and Claude Opus can produce dramatically different brand recommendations from the same foundational system. These variations stem from different training data cutoffs, fine-tuning approaches, and optimization objectives. Brands may appear prominently in one model version while being nearly invisible in another.

OpenAI's GPT-4 and GPT-4o represent the same model family but with different training data and capabilities. GPT-4o includes more recent information and multimodal understanding, potentially changing which brands the model recommends for visual or recent queries. 

Evertune tracks major AI model versions through direct API integration. The platform's API access to ChatGPT, Gemini, Claude, and Llama enables version-specific monitoring when providers make distinct versions available through their APIs. This capability reveals whether brand visibility improvements stem from new model knowledge or underlying optimization work.

The Technical Challenge of Version Tracking

Most AI models don't expose granular version details in consumer applications. When you use ChatGPT Search or Perplexity, the underlying model version may change without user notification. This opacity makes version tracking through user interface testing nearly impossible.

Evertune's direct API partnerships provide access to specific model versions when available. The platform runs more than 1 million custom prompts per brand monthly, allowing version comparison across statistically significant sample sizes rather than anecdotal observations.

What Version Differences Reveal

Different model versions highlight knowledge cutoff impacts and training data gaps. If your brand appears in GPT-4o but not GPT-4, this suggests recent content and announcements drive your visibility. If older versions show strong presence but newer versions don't, competitive content may be displacing your brand in updated training data.

Evertune's reports show AI visibility trends over time, revealing when model version updates impact brand presence. Teams can correlate visibility changes with known model releases to understand which updates affected their positioning.

Questions to Ask About Version Tracking

When evaluating a GEO platform, ask: Can the platform demonstrate version-specific data rather than aggregated results? Does your methodology account for consumer applications that don't disclose underlying versions? How do you validate which version responded to tracked prompts?

Most platforms aggregate results across model versions without distinction. Evertune provides the most granular version tracking available through direct API integration while transparently acknowledging the limitations that provider opacity creates.

Track brand visibility across major AI model versions with Evertune's API-integrated monitoring. Understand how model updates affect your AI search presence with quarterly tracking aligned to typical release cycles.

Evertune is the Generative Engine Optimization (GEO) platform that helps brands improve visibility in AI search

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