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Granite Switch 4.1 Preview

IBMOpen WeightsPending Human Review

Granite Switch 4.1 Preview adds explicit switching between ordinary language behavior and specialized programmatic capabilities. It is designed to combine a general model with deterministic functions through IBM’s Granite Libraries and Mellea tooling. The release includes 3B, 8B, and 30B language checkpoints under Apache 2.0, with 128K context for the representative 30B model. This is a publicly released preview, distinct from the ordinary Granite 4.1 family. Applications must supply the associated runtime to use specialized functions reliably.

2026-05-05
3B, 8B, 30B
Decoder-only Transformer with capability switching
Apache-2.0

Specifications

Parameters
3B, 8B, 30B
Architecture
Decoder-only Transformer with capability switching
License
Apache-2.0
Context Window
131,072 tokens
Type
text
Modalities
text

Benchmark Scores

Advanced Specifications

Model Family
Granite
API Access
Not Available
Chat Interface
Not Available

Capabilities & Limitations

Capabilities
text generationreasoning
Known Limitations
Provider-reported evaluations need application-specific validationGenerated interpretations can be incorrectCurrent information requires external retrieval
Notable Use Cases
private model deploymentdocument and code workflowslanguage-model research

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