Pay-per-use pricing model introduced alongside existing fixed tiers. Legacy free tier users migrated to pay-per-use with $10 voucher. Free tier effectively reduced to proof-of-concept only (~500 posts/month read, no search)
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X replaced its Legacy Free API tier with pay-per-use pricing, announced 2026-02-06. Recently active free-tier users moved to pay-per-use with a one-time $10 voucher. Only apps X classifies as Public Utility Apps keep free scaled access.
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Cloud Storage for Firebase now requires the pay-as-you-go Blaze plan, in effect from February 3, 2026. Projects on the no-cost Spark plan lose access to all Cloud Storage buckets, including default buckets; console access redirects to an upgrade page and API calls return 402 or 403. Provisioning a new default bucket also requires Blaze.
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