What are the parameter sizes available for Granite 4.2?

Granite 4.2 comes in 3B, 8B, and 30B parameter variants.

What is the context window length for Granite 4.2?

All Granite 4.2 models support a native 128,000-token context window.

Large Language ModelsOpen-Source AIAI Business & IndustryArs Technica AIAug 26, 2026Aug 26, 2026, 22:00 JST

IBM launches Granite 4.2 open-weight models, aimed at local LLM users

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3 Key Points

What happened
IBM has released its new Granite 4.2 family of open-weight large language models, available in 3B, 8B, and 30B parameter sizes. These models are designed to be downloaded and self-hosted.
Why it matters
The release is IBM's reasoning-focused update, featuring a native 128,000-token context window. The 8B and 30B variants also include agentic reinforcement-learning training for tools like terminal use and web search.
What to watch
The 3B model supports tools but lacks the specialized training of the larger variants, so businesses may need to evaluate which size fits their on-premise needs based on capability and resource trade-offs.

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Context & Analysis

IBM's Granite 4.2 release underscores a growing industry interest in local, self-hosted LLMs, appealing to businesses that want data privacy and control. The reasoning-focused approach, using chain-of-thought, is a key differentiator. The 8B and 30B variants' agentic training could enable more autonomous workflows, though the 3B model remains a lighter option. This suggests IBM is positioning Granite as a flexible solution for various deployment scenarios.

FAQ

What are the parameter sizes available for Granite 4.2?: Granite 4.2 comes in 3B, 8B, and 30B parameter variants.
What is the context window length for Granite 4.2?: All Granite 4.2 models support a native 128,000-token context window.

Ars Technica AIRead Original Article

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