Noometry

Model comparison

GPT-5.5 Instant vs Phi-4 Mini

GPT-5.5 Instant is the stronger model overall, scoring 42.7 to 30.9 on the Noometry Index.

Last verified . 2 shared benchmarks.

GPT-5.5 Instant OpenAI

42.7

Rank #110 Confirmed

Phi-4 Mini Microsoft

30.9

Rank #283 Reported

Summary

  • They share 2 benchmarks with published results for both. GPT-5.5 Instant scores higher in 3 categories and Phi-4 Mini in 0 categories; 3 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where GPT-5.5 Instant leads 48.9 to 25.3.
  • The biggest single-benchmark swing is SciCode: 48.6% for GPT-5.5 Instant and 10.8% for Phi-4 Mini.
  • Phi-4 Mini has downloadable open weights; the other is API-only.

Side by side

GPT-5.5 InstantPhi-4 Mini
ProviderOpenAIMicrosoft
Noometry Index42.730.9
Released2026-05-052024-12-11
WeightsProprietaryOpen
Context window—128K
Max output—4K
Input $ / M tokens—$0.075
Output $ / M tokens—$0.30
Results tracked273

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Category by category

Coding GPT-5.5 Instant leads

GPT-5.5 Instant: 44.3 (#74), Phi-4 Mini: 28.1 (#317)

BenchmarkGPT-5.5 InstantPhi-4 Mini
SciCode48.6%10.8%
LMArena Coding1433—

Reasoning GPT-5.5 Instant leads

GPT-5.5 Instant: 24.9 (#155), Phi-4 Mini: 22.4 (#195)

BenchmarkGPT-5.5 InstantPhi-4 Mini
CritPt0%0%
Chess Puzzles12%—
LMArena Hard Prompts1426—
Epoch Capabilities Index142.52—

Math Not comparable

GPT-5.5 Instant: 26.5 (#259), Phi-4 Mini: —

BenchmarkGPT-5.5 InstantPhi-4 Mini
FrontierMath (Tiers 1-3)26.3%—
FrontierMath Tier 42.4%—
OTIS Mock AIME 2024-202568.1%—
LMArena Math1420—

Knowledge GPT-5.5 Instant leads

GPT-5.5 Instant: 48.9 (#74), Phi-4 Mini: 25.3 (#262)

BenchmarkGPT-5.5 InstantPhi-4 Mini
GPQA Diamond82.5%—
Vectara Hallucination Rate—23.5%
LMArena Expert1409—

Multimodal Not comparable

GPT-5.5 Instant: 40.0 (#52), Phi-4 Mini: —

BenchmarkGPT-5.5 InstantPhi-4 Mini
LMArena Vision1250—
LMArena Document1403—

Multilingual Not comparable

GPT-5.5 Instant: 52.8 (#80), Phi-4 Mini: —

BenchmarkGPT-5.5 InstantPhi-4 Mini
LMArena Non-English1417—
LMArena Chinese1456—
LMArena French1428—
LMArena German1411—
LMArena Japanese1408—
LMArena Korean1392—
LMArena Russian1431—
LMArena Spanish1429—

Instruction Following Not comparable

GPT-5.5 Instant: 74.2 (#100), Phi-4 Mini: —

BenchmarkGPT-5.5 InstantPhi-4 Mini
LMArena Instruction Following1406—

Long Context Not comparable

GPT-5.5 Instant: 43.4 (#96), Phi-4 Mini: —

BenchmarkGPT-5.5 InstantPhi-4 Mini
LMArena Longer Query1422—

Writing & Preference Not comparable

GPT-5.5 Instant: 61.8 (#85), Phi-4 Mini: —

BenchmarkGPT-5.5 InstantPhi-4 Mini
LMArena Text1419—
LMArena Creative Writing1419—
LMArena Multi-Turn1433—

Frequently asked questions

Is GPT-5.5 Instant better than Phi-4 Mini?

GPT-5.5 Instant is the stronger model overall, scoring 42.7 to 30.9 on the Noometry Index.

Is GPT-5.5 Instant or Phi-4 Mini better for coding?

GPT-5.5 Instant scores higher on coding benchmarks: 44.3 versus 28.1 in the Noometry coding category.

How many benchmarks do GPT-5.5 Instant and Phi-4 Mini share?

2 benchmarks have published results for both models. GPT-5.5 Instant has 27 scored results on Noometry and Phi-4 Mini has 3.

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