Op
gpt-5.6-terra
Benchmark & Insights
OpenAI OpenAI API
Updated Oct 4, 2026 All models
Sample size
232 runs
in window
Accuracy
65.7%
reference match · 251d
Confidence
92%
over 253 runs
Window end
Oct 4, 2026
most recent run
Input price
$2.00/MTok
prompt tokens
Output price
$12.00/MTok
completion tokens
Model insights
- 01 Far more alarmist than its sibling gpt-5.6-sol: it called 34 of 76 "MEDIUM_SAFE" days "unsafe" and 22 of them "high".
- 02 It misses only 4 "unsafe" days, but at the cost of many false alarms.
- 03 Fell to 45% in July.
Notes
OpenAI Cuts GPT-5.6 Terra Pricing by 80% on July 30, 2026. Previous pricing was $2.5 for input tokens, and $15 for output.
Recent forecasts