GPT-5.6 Sol
The top GPT tier. Reach for it when a method is genuinely hard; on an ordinary brief the middle tier produces the same structure for less.
Provider OpenAI · Type text · Cost Premium tier · Context 1M tokens · Reads images
What it is
The premium tier of the GPT-5.6 family.
When it earns its price
Same rule as every top tier here: when the input is long and contradictory and the method has to reconcile it. Not by default.
Best for: Hard analysis · Strategy work · Dense technical input