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Bar chart comparing Granite 4.2 model sizes by parameter count and context length: 3B at 512K, 8B at 512K, 30B at 512K. All three share 512K context. The 30B model is the largest open-weight reasoning model from IBM.

IBM Granite 4.2 ships reasoning and agent RL under Apache 2.0

IBM Granite 4.2 is a family of dense reasoning LLMs in 3B, 8B, and 30B sizes with native chain-of-thought and multi-stage agentic RL, all released under Apache 2.0.

Lars Cornelissen · Aug 26, 2026