Which is better, Claude Sonnet 4.5 or Granite 4.2 8B?

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Which is better, Claude Sonnet 4.5 or Granite 4.2 8B?: Across 11 shared benchmarks, Claude Sonnet 4.5 scores higher on 8 and Granite 4.2 8B on 3. The widest gap is τ³-Bench, where Granite 4.2 8B scores 66.3 against 19.

Claude Sonnet 4.5 vs Granite 4.2 8B

Across 11 shared benchmarks, Claude Sonnet 4.5 scores higher on 8 and Granite 4.2 8B on 3. The widest gap is τ³-Bench, where Granite 4.2 8B scores 66.3 against 19.

AnthropicvsIBM11 shared benchmarks8–3 head-to-head

Benchmark	Claude Sonnet 4.5	Granite 4.2 8B
AIME25 no tools	88	86.7
gdpval	40.4	1189
GPQA Diamond	83.4	64.1
LiveCodeBench v6	64	73.2
MMLU-Pro	88.2	74
scicode	45	36.1
SWE-bench Multilingual	68	30.8
SWE-bench Pro	43.6	19.1
SWE-bench Verified	82	47.7
Terminal-Bench 2.1	55.8	20.6
τ³-Bench	19	66.3

Best tracked score per model per benchmark (default configuration; source-attributed). ↓ marks lower-is-better metrics. Open either model for its full surface, provenance and pricing.