BREAKING
GPT-5.6 Sol/Terra/Luna Join Agent Arena
Three Tiers: Sol, Terra, Luna
Sol
Flagship
●
Top capability
●
Max reasoning & Ultra mode
Terra
Balanced
●
GPT-5.5-class
●
Roughly half the price
Luna
Fast
●
Low-cost
●
Speed focused
Output Price per 1M Tokens
Sol
30
Terra
15
Luna
6
0
%
Terminal-Bench 2.1
0
K
sessions
0
models
0
%
Claude Fable 5 lead
GPT-5.6 Scores Still Being Computed
AI NEWS BLITZ
Arena.ai has added OpenAI's new GPT-5.6 models to its Agent Arena leaderboard.