This is INSANE. A year ago, GPT-5 was one of the best coding models in the world.
1 billion coding tokens would've been $975.
Today, 1 billion tokens on GLM-5.3-Flash costs ~$35.
26x cheaper.
This includes avg cache hits on both.
And on Arena’s coding leaderboard:
- GLM-5.3-Flash: 1531
- GPT-5 High: 1469
I can only image what it will be like this time next year.