Claude Sonnet 4 vs IBM Granite 4.2 30B
Claude Sonnet 4 and IBM Granite 4.2 30B are closely matched at 24.4 and 24.0 on the LLM Stats Score.
Anthropic · IBM · Updated for 2026
Which is better?
Claude Sonnet 4 and IBM Granite 4.2 30B are closely matched on the overall LLM Stats Score at 24.4 and 24.0.
In the 3 individual benchmarks reported for both models, Claude Sonnet 4 wins 2; this is a narrower head-to-head signal than the composite indexes.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Claude Sonnet 4
- you value its reported benchmark strengths — it wins 2 of 3 exact shared results
Choose IBM Granite 4.2 30B
- you want the most recent training data — it shipped Aug 2026
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
8 reported for Claude Sonnet 4 · 18 for IBM Granite 4.2 30B
Claude Sonnet 4 outperforms in 2 benchmarks (GPQA, SWE-Bench Verified), while IBM Granite 4.2 30B is better at 1 benchmark (AIME 2025).
Claude Sonnet 4 shows notably better performance in the majority of benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Context Window
Maximum input and output token capacity
Only Claude Sonnet 4 specifies input context (200,000 tokens). Only Claude Sonnet 4 specifies output context (64,000 tokens).
Input capabilities
Documented input modalities across available providers
Claude Sonnet 4 supports multimodal inputs, whereas IBM Granite 4.2 30B does not.
Claude Sonnet 4 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Claude Sonnet 4
IBM Granite 4.2 30B
License
Usage and distribution terms
Claude Sonnet 4 is licensed under a proprietary license, while IBM Granite 4.2 30B uses Apache 2.0.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Apache 2.0
Open weights
Release Timeline
When each model was launched
Claude Sonnet 4 was released on 2025-05-22, while IBM Granite 4.2 30B was released on 2026-08-25.
IBM Granite 4.2 30B is 15 months newer than Claude Sonnet 4.
May 22, 2025
1.3 years ago
Aug 25, 2026
6 days ago
1.3yr newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude Sonnet 4 and IBM Granite 4.2 30B side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude Sonnet 4 vs IBM Granite 4.2 30B.