<?xml version="1.0" encoding="UTF-8"?>
<!--
  Canonical sitemap-index at https://synthorai.io/sitemap.xml.
  Two children:
    - /sitemap-spa.xml         — landing / models / docs / pricing / compare / legal
                                  (this repo, hand-maintained — bump lastmod when shipping)
    - /blog/sitemap-index.xml  — blog posts + tag pages + active promos
                                  (Astro-built; lastmod auto from frontmatter)

  Google reads sitemap-index recursively, so both child sitemaps' URLs end
  up in Search Console.

  <lastmod> on the parent <sitemap> entries — BUMP MANUALLY (this file is
  static; the dates here do not auto-update):
    - sitemap-spa.xml's lastmod: bump whenever you add/edit a marketing or SPA
      page (and update sitemap-spa.xml itself).  Last: 2026-06-03 (added
      /llm-cost-optimizer/, /models consolidated to Astro).
    - blog/sitemap-index.xml's lastmod: bump to the new post's date whenever
      you publish a blog post. Astro overwrites the child file's internal
      lastmod on each build, but this parent-level lastmod only re-emits when
      THIS file changes — so it must be bumped by hand.
-->
<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  <sitemap>
    <loc>https://synthorai.io/sitemap-spa.xml</loc>
    <lastmod>2026-06-03</lastmod>
  </sitemap>
  <sitemap>
    <loc>https://synthorai.io/blog/sitemap-index.xml</loc>
    <lastmod>2026-06-03</lastmod>
  </sitemap>
</sitemapindex>
