GPT-5.6 Sol Ultra and Frontier Model Math Proofs
Key Questions
Which frontier model solved the Cycle Double Cover Conjecture?
GPT-5.6 Sol Ultra solved the famous unsolved math problem, following Grok 4.5's recent mathematical achievement.
Where is GPT-5.6 Sol currently deployed within Microsoft?
It is deployed across Microsoft's entire stack including Copilot, M365, GitHub, and Foundry, and serves as the default model in M365 Copilot.
What enterprise reasoning capabilities were demonstrated with GPT-5.6 Sol?
A demo showed complex multi-document reasoning on a real lending deal, producing source-cited reports for high-stakes analysis.
What guidance exists for choosing among GPT-5.6 Sol, Terra, and Luna?
Terra delivers 80% quality at half the cost, while Luna suits high-volume bounded tasks. A practical guide compares their cost-performance tradeoffs.
How do these math-solving capabilities signal a new era for frontier models?
Frontier models are now proving mathematical theorems and handling enterprise-grade analysis, marking a shift beyond standard benchmarks.
GPT-5.6 Sol Ultra solved the Cycle Double Cover Conjecture, a famous unsolved math problem, following Grok 4.5's recent math solve. GPT-5.6 Sol is now deployed across Microsoft's entire stack (Copilot, M365, GitHub, Foundry) and is the default in M365 Copilot. A new demo from @gdb shows Sol handling complex multi-document reasoning for a real lending deal, producing source-cited reports. This marks a new era of frontier models proving mathematical theorems and performing high-stakes enterprise analysis. New today: A practical guide to GPT-5.6 Sol, Terra & Luna highlights cost-performance tradeoffs (Terra 80% quality at half cost, Luna best for high-volume bounded tasks).