Don’t let the “flash” name fool you, this is an amazing model. I have been playing with it for the past few weeks, it’s genuinely my new favorite; it’s so fast and it has such a vast world knowledge that it’s more performant than Claude Opus 4.5 or GPT 5.2 extra high, for a fraction (basically order of magnitude less!!) of the inference time and price
How good is it for coding, relative to recent frontier models like GPT 5.x, Sonnet 4.x, etc?
I have not worked with Sonnet enough to give an opinion there.