GLM-5.2
GLM-5.2 is an MIT-licensed open-source model with a 1M-token context. It scores 81.0 on Terminal-Bench 2.1 and 62.1 on SWE-bench Pro, and is the highest-ranked open-source model on FrontierSWE, PostTrainBench, and SWE-Marathon.
The call on this one
What shipped is free. The call on it, what to do about it and the condition on that, opens with a signup: free, no card, every edition in full.
It becomes $50 a year, and signing up now keeps your first year free.