Response review
Grok · paid, api, api · api
Who is my U.S. representative in CA-21?
Captured 2026-07-10 21:58:01 UTC
Model grok-4.3
**Jim Costa (D)** is the current U.S. Representative for California's 21st congressional district. You can confirm this on the official House website (house.gov) or by entering your address on a congressional district lookup tool, as boundaries can shift after redistricting or special elections.
Grade
Judge
accurate
Judge model claude-opus-4-8
The response correctly identifies Jim Costa (D) as the U.S. Representative for CA-21, matching the ground truth, and cites the official House website.
Human
not reviewed
Final
accurate
Ground truth
representative: Jim Costa
clerk.house.gov 100
as of 2026-07-07