# Z.ai: GLM 5.2

NVIDIA: Nemotron 3 Ultra from NVIDIA was first recorded on 14 Sep 2026. Its release date is not established. Catalogues list a 262,144 tokens context window. 20 evidence links.

- Kind: Sighting
- Developer: NVIDIA
- Confidence: Observed
- First seen: 2026-09-14T00:11:55.517Z
- Model: [NVIDIA: Nemotron 3 Ultra](https://alexgetman.com/models/nvidia/nemotron-3-ultra-550b-a55b/)
- Canonical: https://alexgetman.com/signals/2026/09/14/z-ai-glm-5-2/

## Evidence links

- [Arena · leaderboards](https://huggingface.co/nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16)
- [OpenRouter](https://openrouter.ai/nvidia/nemotron-3-ultra-550b-a55b)
- [TrueFoundry · Azure catalogue](https://github.com/truefoundry/models/blob/main/providers/microsoft-foundry/Nemotron-3-Ultra-550B-A55B-BF16.yaml)
- [TrueFoundry · Azure catalogue](https://github.com/truefoundry/models/blob/main/providers/azure-ai-foundry/Nemotron-3-Ultra-550B-A55B-BF16.yaml)
- [OpenCode · discovery](https://opencode.ai/data/nvidia/nemotron-3-ultra-550b-a55b)
- [Artificial Analysis · benchmarks](https://artificialanalysis.ai/models)
- [models.dev · catalogue](https://models.dev/#nemotron-3-ultra-550b-a55b-free)
- [models.dev · catalogue](https://models.dev/#nemotron-3-ultra-550b-a55b)
- [models.dev · catalogue](https://models.dev/#Nemotron-3-Ultra-550b-a55b)
- [models.dev · catalogue](https://models.dev/#nemotron-3-ultra-550b-a55b:free)
- [models.dev · catalogue](https://models.dev/#nemotron-3-ultra-nvfp4)
- [models.dev · catalogue](https://models.dev/#nvidia-nemotron-3-ultra-550b-a55b)
- [models.dev · catalogue](https://models.dev/#NVIDIA-Nemotron-3-Ultra-550B-A55B)
- [models.dev · catalogue](https://models.dev/#NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16)
- [models.dev · catalogue](https://models.dev/#nvidia-nemotron-3-ultra)
- [models.dev · catalogue](https://models.dev/#NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16:peft:262144)
- [models.dev · catalogue](https://models.dev/#nemotron-3-ultra-free)
- [models.dev · catalogue](https://models.dev/#nemotron-3-ultra)
- [Arena · leaderboards](https://huggingface.co/nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-NVFP4)
- [models.dev · catalogue](https://models.dev/#NVIDIA-Nemotron-3-Ultra-550B-A55B-NVFP4)