Response review
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Who are my U.S. senators in Oklahoma?
As of today, Oklahoma's two U.S. senators are: James Lankford (Republican) — Oklahoma's senior U.S. senator, serving since 2015. U.S. Senate Alan Armstrong (Republican) — Oklahoma's junior U.S. senator. He was appointed in 2026 to fill the seat after Markwayne Mullin left the Senate. U.S. Senate +1 If you meant your senators based on where you currently live rather than Oklahoma, let me know your current state and I'll identify them.
Cited sources
Grade
Judge
accurate
Judge model claude-opus-4-8
The response correctly names both senators, Alan Armstrong and James Lankford, matching the ground truth.
Human
not reviewed
Final
accurate
Ground truth
senators: Alan Armstrong, James Lankford
senate.gov 100
as of 2026-07-14
https://www.senate.gov/general/contact_information/senators_cfm.xml