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pydantic.dev

Pydantic | The end-to-end AI engineering stack

Last scanned Jul 26, 2026, 5:47 AM · 1 view

91

Overall score

Excellent

Summary

Pydantic is the AI engineering stack for teams building with AI. This website uses Astro hosted on Cloudflare behind Cloudflare CDN. SEO is excellent (95/100) and accessibility is excellent (100/100). Security scores fair (70/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.

Pydantic is the AI engineering stack for teams building with AI. Observe with Logfire, evaluate with Evals, build type-safe agents with Pydantic AI, and track costs with AI Gateway.

United States
Hosted on Cloudflare

Products & pricing

Product and pricing information published in this site's own structured data.

Pydantic Logfire Pricing

$49/mo USD

Transparent pricing for AI teams

$2 USD

Detailed comparison

$49/mo USD

Cost calculator

$2 USD

Top issues to fix

4 issues found · 2 high priority

  • Missing Strict-Transport-Security header

    Security

    Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Missing X-Frame-Options header

    Security

    Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

  • Meta description longer than 160 characters

    SEO

    Trim the meta description to under 160 characters to avoid truncation in search results.

95

SEO

1 issue(s) found

100

Performance

52 ms

70

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

Pydantic is the AI engineering stack for teams building with AI. Observe with Logfire, evaluate with Evals, build type-safe agents with Pydantic AI, and track costs with AI Gateway.

Contact

Email, phone, and address published on this site's own pages.

Meta tags

Title
Pydantic | The end-to-end AI engineering stack
Description
Pydantic is the AI engineering stack for teams building with AI. Observe with Logfire, evaluate with Evals, build type-safe agents with Pydantic AI, and track costs with AI Gateway.
Canonical
https://pydantic.dev/
Language
en
Charset
utf-8
Viewport
width=device-width, initial-scale=1
Robots meta
Manifest
https://pydantic.dev/favicon/site.webmanifest

OpenGraph & Twitter Card

OpenGraph

og:title
Pydantic | The end-to-end AI engineering stack
og:description
Pydantic is the AI engineering stack for teams building with AI. Observe with Logfire, evaluate with Evals, build type-safe agents with Pydantic AI, and track costs with AI Gateway.
og:type
website
og:url
https://pydantic.dev/

Twitter Card

twitter:card
summary_large_image
twitter:title
Pydantic | The end-to-end AI engineering stack
twitter:description
Pydantic is the AI engineering stack for teams building with AI. Observe with Logfire, evaluate with Evals, build type-safe agents with Pydantic AI, and track costs with AI Gateway.

Technologies

Detected frameworks, languages, and tools.

Hosting & CDN

Hosting provider
Cloudflare
CDN provider
Cloudflare
IP address
172.67.69.88
ASN
AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)

DNS records

TypeValue
A
  • 172.67.69.88
  • 104.26.8.129
  • 104.26.9.129
AAAA
  • 2606:4700:20::681a:981
  • 2606:4700:20::681a:881
  • 2606:4700:20::ac43:4558
MX
  • alt1.aspmx.l.google.com
  • aspmx.l.google.com
  • alt4.aspmx.l.google.com
  • alt2.aspmx.l.google.com
  • alt3.aspmx.l.google.com
TXT
  • google-site-verification=lxye2MsYYsZ-OOjfaFQmJD7mTPEu_OD7aDW6cOXpJ9Q
  • v=spf1 include:_spf.google.com ~all
  • MS=ms92846730
  • oneleet-domain-verification-7ccb3f41-418d-4f04-af9e-e349aafae22d
NS
  • mario.ns.cloudflare.com
  • adi.ns.cloudflare.com
CAA
CNAME
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Google Trust Services
Subject
pydantic.dev
Valid from
Jun 6, 2026
Valid to
Sep 4, 2026
Days until expiry
37
SAN domains
pydantic.dev

Security headers

  • Strict-Transport-SecurityMissing
  • Content-Security-PolicyMissing
  • X-Frame-OptionsMissing
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyEnabled
  • Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 6 · H3 7

Links

38 internal · 9 external · 0 broken

Images

42 total · 0 missing alt

Scripts / Styles

17 scripts · 1 stylesheets

JS / CSS size

363 KB · 47.4 KB

Page size

222 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
0
sitemap.xml
Found
URLs in sitemap
218

SEO issues

  • Meta description longer than 160 characters

Accessibility issues

No accessibility issues detected.

Careers

Scan details

Requested URL
https://pydantic.dev
Final URL
https://pydantic.dev
HTTP status
200
HTTP version
HTTP/2
Response time
48 ms
HTML size
222 KB
Redirect chain
https://pydantic.dev

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Frequently asked questions

What technology does pydantic.dev use?
pydantic.dev is built with Astro.
Is pydantic.dev secure (HTTPS)?
Yes. pydantic.dev uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Sep 4, 2026.
Who hosts pydantic.dev?
pydantic.dev is hosted on Cloudflare, behind Cloudflare CDN.
What is pydantic.dev's SEO score?
pydantic.dev scored 95/100 for SEO in the latest analysis (excellent).
What is pydantic.dev's overall website score?
pydantic.dev has an overall SiteGraph score of 91/100, combining SEO, performance, security, and accessibility.
What products does pydantic.dev offer?
pydantic.dev offers Pydantic Logfire Pricing, Transparent pricing for AI teams, Detailed comparison, Cost calculator.
Is pydantic.dev hiring?
Yes. pydantic.dev has 14 open roles listed on their careers page.