BREAKING
OpenAI Opens GPT-5.6 to Everyone
Three Tiers: Sol, Terra, Luna
Sol
Flagship
●
Top capability
●
Ultra mode with sub-agents
Terra
Balanced
●
GPT-5.5-level performance
●
About half the price
Luna
Fast
●
Low-cost tier
●
Built for high volume
Terminal-Bench 2.1 Scores
Sol Ultra
91.9
Sol
88.8
Mythos 5
88
Terra
84.3
Luna
82.5
0
M
context tokens
0
%
larger than 5.5
0
%
cache read discount
Rollout Path and New Tools
1
June 26 preview
↓
2
July 9 public
↓
3
ChatGPT Work
↓
4
Hosted sites
Frontier AI Race Heats Up
AI NEWS BLITZ
OpenAI has launched its GPT-5.6 series globally, opening access to all users.