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Granite 4.1 8B Instruct vs Grok 4.3

Rows highlighted in warm gray are where the models differ. Numbers carry their as-of date and primary source.

Specs

Field A: Granite 4.1 8B Instruct B: Grok 4.3
Released 2026-04-29
Developer IBMxAI
Openness OpenProprietary
License Apache-2.0Proprietary
OSI-approved yesno
Data released nono
Training code nono
Architecture denseunknown
Total params 8B
Active params
Experts
Context window 524K
Attention unknownunknown
Position enc. unknownunknown
Pretraining tokens
Post-training sft, rlhfrlhf
Training hardware
$/M input $1.25
$/M output $2.50
Output tok/sec 88.1

Benchmarks

Missing scores render as not reported; never inferred. Bold highlights the leader per benchmark.

General reasoning

GPQA-Diamond 90.1 2026-05-21

Code

Context · A

Dense Granite 4.1 line released April 29 2026 at 3B, 8B, and 30B sizes under Apache 2.0. The 8B Instruct matches or beats IBM's own 32B MoE Granite 4.0 Small on tool calling, math, coding, and instruction following, a 4x parameter reduction. Released alongside Granite 4.1 speech, vision, embeddings, and Guardian safety models.

Context · B

xAI's most-intelligent-and-fastest model per the lab, released April 30 2026 after a Grok 4.3 Beta drop on April 17 for SuperGrok Heavy users. Native multimodal video understanding and direct PDF, spreadsheet, and PowerPoint generation from chat. Reasoning is now always-on rather than toggleable.

Granite 4.1 8B Instruct detail → · Grok 4.3 detail →