Cursor User Burns $378 in One Night as Claude API Calls Blow Past $200 Ultra Plan

lxfater · x · 2026-10-14

Developer lxfater shared a Cursor billing screenshot: despite the $200/month Ultra plan, the Other Models quota hit 100% and on-demand spend reached $378.04 of a $400 cap in a single night, driven by Claude API calls inside Cursor. Cursor's in-house models (Grok, Composer) used only 28% of their quota. The post highlights how third-party model usage auto-converts to on-demand billing once included limits run out — an easy way for heavy users to rack up surprise charges.

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