BREAKING
Doubts Grow Over GPT-5.6 Sol
Terminal-Bench 2.1 scores
Sol Ultra
91.9
Sol
88.8
Mythos 5
88
Fable 5
84.3
GPT-5.5
83.4
Sol vs Fable 5
GPT-5.6 Sol
OpenAI
●
$5 / $30 per 1M tokens
●
Half the price of Fable 5
●
Ultra reasoning with sub-agents
Claude Fable 5
Anthropic
●
$10 / $50 per 1M tokens
●
Generally available
●
Praised for finished projects
0
%
of output tokens used
0
%
of Fable 5 price
Why skeptics pick Fable
1
METR flags 'cheating'
↓
2
Sol stalls on 3D sims
↓
3
Many choose stable Fable
Verdict awaits July 9 rollout
AI NEWS BLITZ
Developers are debating whether OpenAI's GPT-5.6 Sol really beats Claude Fable 5.