← 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
74
Task done
100%
89–100% 95% CI · n=30
Fabrication
0%
Dead-air
55%
Tool silence
100%
Stalled
0%
TTFT p50
701ms
701–797 p50–p90
Cost / 1M tok
$12.00
Share this result
Embed the live badge
Markdown
[](https://benchmarks.speko.ai/llm/openai-gpt-5-6-terra)
HTML
<a href="https://benchmarks.speko.ai/llm/openai-gpt-5-6-terra"><img src="https://benchmarks.speko.ai/badge/llm/openai-gpt-5-6-terra.svg" alt="Speko llm rank"></a>
URL
https://benchmarks.speko.ai/llm/openai-gpt-5-6-terra