← LLM 
OpenAI
gpt-5.6-terra
reasoning off (gateway default)
* Conditional
Measured 2026-08-05 with reasoning off, in the same run as luna.
Score
71
Task done
87.37%
74–98% 95% CI bootstrap over items · n=95 · measured 2026-08-25
Refusal quality
88.9%
names the gap 90% · offers a route 87% · 10 probes x 3 iterations · 1 silent turn scored zero
Fabrication
0%
0 of 10 probes (30 probe runs) · ≤31%
Dead-air
66.3%
195 of 294 turns
Tool silence
100.0%
all of 19 items (195 tool-call turns) · ≥82%
Stalled
17.8%
16 of 90 runs
TTFT p50
701ms
701–797 p50–p90
Cost / 1M tok
$12.00
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