Claude 4 Sonnet vs GLM-5.2

Pick GLM-5.2 if you want the stronger benchmark profile. Claude 4 Sonnet only becomes the better choice if coding is the priority or you would rather avoid the extra latency and token burn of a reasoning model.

GLM-5.2 is clearly ahead on the provisional aggregate, 94 to 50. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Claude 4 Sonnet is also the more expensive model on tokens at $3.00 input / $15.00 output per 1M tokens, versus $1.40 input / $4.40 output per 1M tokens for GLM-5.2. That is roughly 3.4x on output cost alone. GLM-5.2 is the reasoning model in the pair, while Claude 4 Sonnet is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. GLM-5.2 gives you the larger context window at 1M, compared with 200K for Claude 4 Sonnet.