BREAKING
OpenAI Previews GPT-5.6 Family
Three Tiers: Sol, Terra, Luna
Sol
flagship
●
Deepest reasoning
●
ultra subagent mode
Terra
balanced
●
GPT-5.5-class
●
Half the price
Luna
fast
●
Low cost
●
High speed
Terminal-Bench 2.1 Scores
Sol Ultra
91.9
Sol
88.8
GPT-5.5
88
Claude Mythos 5
88
Luna
84.3
0
$
Sol input
0
$
Terra input
0
$
Luna input
A Gated Government Review
1
Gated preview
↓
2
~20 partners
↓
3
Security review
↓
4
Public launch Thu
General Availability Coming Weeks
AI NEWS BLITZ
OpenAI is expanding global preview access to its new GPT-5.6 model family.