TLDR Tech / AI
Granite 4.2 LLMs: How They're Built
Granite 4.2 models by IBM are dense, decoder-only reasoning LLMs available in 3B, 8B, and 30B sizes. Trained on 15T tokens, they use a five-phase strategy that includes a multi-stage RL pipeline and support native tool calling with a THINKING/NON-THINKING switch. The 8B and 30B models learn agentic behavior through RL stages in real environments, enhancing capabilities such as code editing and web searching.
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