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Promoted
Official Z.ai platform to experience our new, MIT-licensed GLM models (Base, Reasoning, Rumination). Simple UI focuses on model interaction. Free.
This is the 16th launch from Z.ai. View more
GLM-5.3-Flash
Launching today
GLM-5.3-Flash is the first natively multimodal model in the GLM-5 series. With 320B total parameters and just 18B active parameters, it outperforms GLM-5.2 across benchmarks and real-world workloads at one-tenth the price, while approaching Claude Opus 4.8 on coding and agentic benchmarks.
Free
Launch Team
Claude by Anthropic
Flowtica Scribe
Hi everyone!
So Ox Alpha was GLM-5.3-Flash 🐂
People were already running it on @opencode and OpenRouter before the name showed up. And it was the most used model of the week there:
The public version is 320B-A18B w/ native multimodal, 1M context, MIT weights. Sparse plus linear attention is how they keep that long window cheaper to serve.
API is $0.15/M in and $0.50/M out. First two weeks are 50% off!