Which is better, GPT-5 or Granite 4.2 8B?

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Which is better, GPT-5 or Granite 4.2 8B?: Across 11 shared benchmarks, GPT-5 scores higher on 9 and Granite 4.2 8B on 2. The widest gap is τ³-Bench, where Granite 4.2 8B scores 66.3 against 19.6.

GPT-5 vs Granite 4.2 8B

Across 11 shared benchmarks, GPT-5 scores higher on 9 and Granite 4.2 8B on 2. The widest gap is τ³-Bench, where Granite 4.2 8B scores 66.3 against 19.6.

OpenAIvsIBM11 shared benchmarks9–2 head-to-head

Benchmark	GPT-5	Granite 4.2 8B
AIME25 no tools	94.6	86.7
gdpval	32.5	1189
GPQA Diamond	87.3	64.1
LiveCodeBench v6	87	73.2
MMLU-Pro	87.5	74
scicode	43	36.1
SWE-bench Multilingual	55.3	30.8
SWE-bench Pro	41.8	19.1
SWE-bench Verified	74.9	47.7
Terminal-Bench 2.1	35.2	20.6
τ³-Bench	19.6	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.