Which brand does AI prefer? We tested both across 3 leading AI models.
In our AI blind test of Cloudflare vs Fastly, we tested both brands across 3 leading AI models: GPT-5 Mini, Gemini 2.5 Flash, and Claude 3.5 Haiku. Cloudflare scored 100% while Fastly scored 0%. Cloudflare takes the lead with 100% AI preference. The biggest gap is in trust — Cloudflare scores 9 vs Fastly's 7.7.
Last tested: February 23, 2026
Based on 3 AI models and 5 evaluation angles
Cloudflare
100%
Fastly
0%
100%
Cloudflare
0%
Fastly
“Cloudflare takes the lead with 100% AI preference. The biggest gap is in trust — Cloudflare scores 9 vs Fastly's 7.7.”
Cloudflare presents a more comprehensive and clear value proposition, emphasizing security, performance, and AI integration across various aspects of…
Cloudflare presents a broader, more integrated suite of services under a clear 'Connect, Protect, Build' framework, addressing a wider range of modern…
Cloudflare presents a more comprehensive and forward-looking vision, with a strong emphasis on AI and integrated solutions. Its messaging is highly co…
The AI Verdict
Cloudflare takes the lead with 100% AI preference. The biggest gap is in trust — Cloudflare scores 9 vs Fastly's 7.7.
How each website scores across key dimensions (1-10)
How each AI model independently evaluated the two websites
“Based on the site content, Cloudflare presents a broader, clearly communicated platform (connectivity cloud, SASE, AI security, developer tools) with strong credibility signals (large customer logos, concrete metrics, analyst recognitions) and easy entry points. Fastly is clearly strong technically and developer-focused on edge/CDN performance, but Cloudflare’s wider value proposition and clearer enterprise positioning make it the safer, more versatile choice for most evaluators.”
“Cloudflare presents a more comprehensive and clear value proposition, emphasizing security, performance, and AI integration across various aspects of web and application infrastructure. Their site is better organized and provides a stronger sense of credibility through extensive customer logos and detailed explanations of their services.”
“No successful evaluations from this model.”
This free test used 3 models. The full GEO Audit gives you what agencies charge $500+ for, analyzing Cloudflare across 11 AI models and 4 dimensions:
The same analysis agencies charge $250 to $1,500 for
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