Cursor users report Grok 4.5 tool-calling gaps

Category: Pulse
Status: discussion
Sources: r/cursor
Summary: In the degraded Reddit sample, r/cursor threads on 2026-07-09 report Grok 4.5 arriving in Cursor on all plans alongside adoption friction, including reports that Grok 4.5 does not call Cursor's internal tools and that the AskQuestion tool is unavailable with it. Users also compare it against Cursor's own Composer 2.5. This is unverified practitioner report.
Why it matters: Tool-calling reliability inside the harness, not raw benchmark scores, is what determines whether a new model is usable for agentic coding day to day.