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openai.com

https://chat.openai.com

C70
Performance 22Accessibility 96SEO 92Best Practices 77

6 technologies detected · Last audited Apr 21, 2026

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Technology stack

Cdn

Cloudflare

Frontend

AngularJS Cloudflare Turnstile Google Play app HSTS Native app preferred

Frequently asked questions about openai.com

What technology does openai.com use?

openai.com is built with AngularJS, Cloudflare Turnstile, Google Play app, HSTS, and Native app preferred.

Is openai.com fast?

No — openai.com scores 22/100 on Lighthouse mobile performance, indicating significant optimization opportunities.

Is openai.com accessible?

Yes — openai.com scores 96/100 on Lighthouse accessibility, meeting most WCAG-aligned automated checks.

What CMS does openai.com use?

No CMS fingerprint was detected on openai.com — it may use a static site generator or a custom application.

Where is openai.com hosted?

openai.com is served through Cloudflare.

Does openai.com use HTTPS?

Yes — openai.com serves traffic over HTTPS.

3 audits

Apr 21, 2026 19:09 UTC Latest

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Worker: worker-madrid-spain-03

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Scores

Performance 22Accessibility 96Best Practices 77SEO 92PWA 0

Timing

LCP: 21.13 sFirst Contentful Paint: 3.42 sTTFB: 91 msTotal Time: 91 msCumulative Layout Shift: 0.208
Apr 16, 2026 17:18 UTC

/

Worker: worker-amsterdam-nl-01

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Scores

Performance 30Accessibility 100Best Practices 81SEO 100PWA 0

Timing

LCP: 20.67 sFirst Contentful Paint: 4.37 sTTFB: 156 msTotal Time: 164 msCumulative Layout Shift: 0.000
Apr 7, 2026 20:03 UTC

/

Worker: worker-madrid-spain-05

View full report →

Scores

Performance 37Accessibility 100Best Practices 81SEO 100PWA 0

Timing

LCP: 23.11 sFirst Contentful Paint: 2.37 sTTFB: 93 msTotal Time: 93 msCumulative Layout Shift: 0.000

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