Response review
ChatGPT · paid, api, api · api
Who is my U.S. representative in CA-18?
Captured 2026-07-10 20:20:28 UTC
Model gpt-5-2025-08-07
Zoe Lofgren (Democrat) is the U.S. Representative for California’s 18th congressional district as of July 10, 2026. ([clerk.house.gov](https://clerk.house.gov/Members/L000397?os=qtft_1&utm_source=openai)) If you’d like, I can pull her contact details or double-check your address to confirm you’re in CA-18. ([lofgren.house.gov](https://lofgren.house.gov/?utm_source=openai))
Cited sources
Grade
Judge
accurate
Judge model claude-opus-4-8
The response correctly identifies Zoe Lofgren as the U.S. Representative for CA-18, matching the ground truth, and cites the authoritative clerk.house.gov source.
Human
not reviewed
Final
accurate
Ground truth
representative: Zoe Lofgren
clerk.house.gov 100
as of 2026-07-07