gpt-oss-120b

Score

81

Task done

82.02%

70–93% 95% CI bootstrap over items · n=95 · measured 2026-10-04

Refusal quality

83.3%

names the gap 77% · offers a route 83% · 10 probes x 3 iterations · 3 silent turns scored zero

Fabrication

0%

0 of 10 probes (30 probe runs) · ≤31%

Dead-air

70.5%

227 of 322 turns

Tool silence

100.0%

all of 19 items (227 tool-call turns) · ≥82%

Stalled

12.2%

11 of 90 runs

TTFT p50

139ms

139–261 p50–p90 · n=38

Cost / 1M tok

$0.75