gpt-5.6 sol is being offered at $1/$5 per million tokens on openrouter through openai flex.
for comparison:
> claude opus 5: $5/$25
> claude fable 5: $10/$50
so at these rates, sol is:
> 5x cheaper than opus 5
> 10x cheaper than fable 5
while still sitting in basically the saame frontier capability class.
the price performance gap here is kinda insane.