IBM has released Granite 4.2, a new family of dense, decoder-only reasoning LLMs available in 3B, 8B, and 30B parameter sizes. These models were trained from scratch on approximately 15 trillion tokens using a five-phase strategy that extends the context window to 512K tokens. The models feature a unique "thinking/non-thinking" switch for efficient reasoning and native tool-calling capabilities, with the 8B and 30B versions further trained to act as agents in sandboxed environments. Granite 4.2 models are released under the Apache 2.0 license and are compatible with OpenAI-compatible endpoints like vLLM and SGLang. AI
IMPACT Extends context window capabilities and introduces agentic reasoning to open-source models, potentially accelerating enterprise adoption of AI agents.
RANK_REASON Frontier-lab model release with system card. [lever_c_demoted from frontier_release: ic=1 ai=1.0]
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