LLM ReferenceLLM Reference

Granite 4.1 3B

granite-4.1-3b

Open Source

About

IBM Granite 4.1 3B is a dense decoder-only transformer instruct model with 131K token context. Supports multilingual dialog (12 languages), code (FIM), tool-calling, and RAG. Trained with SFT and RL alignment on an NVIDIA GB200 NVL72 cluster. Apache 2.0.

Granite 4.1 3B has a 131K-token context window.

Capabilities

VisionMultimodalReasoningFunction CallingTool UseStructured OutputsCode Execution

Rankings

Best Open Source LLMsBest Small Language Models (SLMs)Cheapest LLM APIsBest LLM APIsBest Free LLMsBest LLMs for WritingBest LLMs for Marketing

Specifications

FamilyGranite 4.1
Released2026-04-29
Parameters3B
Context131K
ArchitectureDense decoder-only transformer with GQA, RoPE, SwiGLU, RMSNorm

Created by

IBM ResearchIBM Research

Creating reliable and adaptable AI solutions

Armonk, New York, United States
Founded 1945
Website