Model comparison

GPT-5.4 Pro vs Phi-3.5-mini

GPT-5.4 Pro has enough public results to be ranked (#18); Phi-3.5-mini does not yet, so treat this comparison as directional.

Last verified . 0 shared benchmarks.

GPT-5.4 Pro OpenAI

58.9

Rank #18 Confirmed

Phi-3.5-mini Microsoft

36.9

Unranked Sparse

Summary

  • The widest gap is in coding, where GPT-5.4 Pro leads 43.2 to 34.6.
  • Phi-3.5-mini has downloadable open weights; the other is API-only.

Side by side

GPT-5.4 Pro and Phi-3.5-mini specifications
GPT-5.4 ProPhi-3.5-mini
ProviderOpenAIMicrosoft
Noometry Index58.936.9
Released2026-03-052024-08-16
WeightsProprietaryOpen
Context window1.05M—
Max output128K—
Input $ / M tokens$30—
Output $ / M tokens$180—
Results tracked165

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Category by category

Coding GPT-5.4 Pro leads

GPT-5.4 Pro: 43.2 (#90), Phi-3.5-mini: 34.6 (#232)

Coding benchmarks
BenchmarkGPT-5.4 ProPhi-3.5-mini
WeirdML57.4%—
BigCodeBench Instruct—32.8%
BigCodeBench Complete—38.5%

Reasoning Not comparable

GPT-5.4 Pro: 70.7 (#13), Phi-3.5-mini: —

Reasoning benchmarks
BenchmarkGPT-5.4 ProPhi-3.5-mini
ARC-AGI-283.3%—
SimpleBench74.1%—
ARC-AGI-194.5%—
CritPt30%—
Chess Puzzles58.6%—
EnigmaEval23.8%—
Epoch Capabilities Index158.93—
PIQA—81%

Math Not comparable

GPT-5.4 Pro: 72.4 (#22), Phi-3.5-mini: —

Math benchmarks
BenchmarkGPT-5.4 ProPhi-3.5-mini
FrontierMath (Tiers 1-3)82.5%—
FrontierMath Tier 458.5%—
FrontierMath (Feb 2025 set)50%—
FrontierMath Tier 4 (v1)37.5%—
GSM8K—86.2%

Knowledge Not comparable

GPT-5.4 Pro: 68.3 (#7), Phi-3.5-mini: —

Knowledge benchmarks
BenchmarkGPT-5.4 ProPhi-3.5-mini
GPQA Diamond94.6%—
Humanity's Last Exam44.3%—
SimpleQA Verified46.3%—
Vectara Hallucination Rate8.3%—
BoolQ—78%

Frequently asked questions

Is GPT-5.4 Pro better than Phi-3.5-mini?

GPT-5.4 Pro has enough public results to be ranked (#18); Phi-3.5-mini does not yet, so treat this comparison as directional.

Is GPT-5.4 Pro or Phi-3.5-mini better for coding?

GPT-5.4 Pro scores higher on coding benchmarks: 43.2 versus 34.6 in the Noometry coding category.

How many benchmarks do GPT-5.4 Pro and Phi-3.5-mini share?

0 benchmarks have published results for both models. GPT-5.4 Pro has 16 scored results on Noometry and Phi-3.5-mini has 5.

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