Compare GLM 5.2 from Z.AI and Nemotron 3 Ultra 550B A55B (free) from Nvidia on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.
GLM 5.2
Nemotron 3 Ultra 550B A55B (free)GLM-5.2 is Z.ai’s flagship model for the era of long-horizon tasks. With a truly usable 1M-token context window, it can handle project-level engineering context, execute long-running tasks more reliably, follow engineering standards more consistently, and complete the full development workflow from requirements to multi-platform deployment in a single task.
NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model featuring an extensive 1,000,000-token context length. Built on a hybrid Transformer-Mamba mixture-of-experts (MoE) architecture, it operates with 55B active parameters out of a total of 550B parameters. This advanced structure is designed to support sophisticated reasoning and complex task orchestration.
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
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GLM 5.2 accepts 1,000,000 and Nemotron 3 Ultra 550B A55B (free) accepts 1,000,000 input tokens.
GLM 5.2 accepts text input and supports thinking, tool calling, function calling and structured outputs; Nemotron 3 Ultra 550B A55B (free) accepts text input and supports reasoning, tool calling and long context.
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