Kimi K3 vs OpenAI o3

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Benchmark Scores Comparison

Kimi K3 OpenAI o3

Kimi K3

Score: 15.0

OpenAI o3

Score: 15.0

Coverage matrix

2 models × 7 benchmarks — hover a benchmark name for its category

Full Coverage Matrix
Hides benchmarks where all selected models score identically.
Shading = score relative to the best score among the selected models: Low Mid High Missing (—) The totals row shows how many of the 7 benchmarks each model has scores for.
Benchmark Kimi K3 Moonshot AI OpenAI o3 OpenAI
WMDP (Bio) 89.1 —
HPCT 59.6 —
MMMLU — 88.8
Lab Bench (ProtocolQA) 81.9 —
WMDP (Chem) 84.2 —
MBCT 58.9 —
VCT 48 —
Covered 6/7 1/7

Scorecard

Overall 0–100 score — category strengths (50%), shared-benchmark wins (30%), coverage (20%)

Model Overall score Shared benchmark wins Coverage Strongest at Weakest at
Kimi K3 85.7 — 6 of 7 (86.0%) — —
OpenAI o3 14.3 — 1 of 7 (14.0%) — —

Partial coverage benchmarks

Scored by at least one but not all selected models (7) — missing scores show as —

Benchmark Category Kimi K3 OpenAI o3
WMDP (Bio) 1/2 models safety 89.1 —
HPCT 1/2 models safety 59.6 —
MMMLU 1/2 models multilingual — 88.8
Lab Bench (ProtocolQA) 1/2 models safety 81.9 —
WMDP (Chem) 1/2 models safety 84.2 —
MBCT 1/2 models safety 58.9 —
VCT 1/2 models safety 48 —

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