Which is better, GPT-5 or Granite 4.2 3B?

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Which is better, GPT-5 or Granite 4.2 3B?: Across 6 shared benchmarks, GPT-5 scores higher on 5 and Granite 4.2 3B on 1. The widest gap is τ³-Bench, where Granite 4.2 3B scores 51 against 19.6.

GPT-5 vs Granite 4.2 3B

Across 6 shared benchmarks, GPT-5 scores higher on 5 and Granite 4.2 3B on 1. The widest gap is τ³-Bench, where Granite 4.2 3B scores 51 against 19.6.

OpenAIvsIBM6 shared benchmarks5–1 head-to-head

Benchmark	GPT-5	Granite 4.2 3B
AIME25 no tools	94.6	78.3
GPQA Diamond	87.3	54.8
LiveCodeBench v6	87	69.7
MMLU-Pro	87.5	67.8
scicode	43	24.1
τ³-Bench	19.6	51

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.