Noometry

Model comparison

Grok 4.3 vs Phi-4 Mini

Grok 4.3 is the stronger model overall, scoring 43.8 to 30.9 on the Noometry Index. Phi-4 Mini costs 12× less per token, which makes it the better buy when Grok 4.3's lead doesn't matter for your workload.

Last verified . 2 shared benchmarks.

Grok 4.3 xAI

43.8

Rank #86 Confirmed

Phi-4 Mini Microsoft

30.9

Rank #283 Reported

Summary

  • They share 2 benchmarks with published results for both. Grok 4.3 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 Grok 4.3 leads 52.5 to 25.3.
  • The biggest single-benchmark swing is SciCode: 47.3% for Grok 4.3 and 10.8% for Phi-4 Mini.
  • Phi-4 Mini is cheaper at $0.075 / $0.30 per million input/output tokens, against $1.25 / $2.50 for Grok 4.3.
  • Grok 4.3 accepts more context: 1M tokens versus 128K.
  • Phi-4 Mini has downloadable open weights; the other is API-only.

Side by side

Grok 4.3Phi-4 Mini
ProviderxAIMicrosoft
Noometry Index43.830.9
Released2026-04-172024-12-11
WeightsProprietaryOpen
Context window1M128K
Max output30K4K
Input $ / M tokens$1.25$0.075
Output $ / M tokens$2.50$0.30
Results tracked403

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Category by category

Coding Grok 4.3 leads

Grok 4.3: 41.6 (#121), Phi-4 Mini: 28.1 (#317)

BenchmarkGrok 4.3Phi-4 Mini
SciCode47.3%10.8%
LMArena WebDev1357—
WeirdML49.9%—
LMArena Coding1415—
ALE-Bench944.17—

Agentic & Tool Use Not comparable

Grok 4.3: 27.7 (#99), Phi-4 Mini: —

BenchmarkGrok 4.3Phi-4 Mini
GDP.pdf8%—
LMArena Search1165—
Vending-Bench 235.26—

Reasoning Grok 4.3 leads

Grok 4.3: 35.9 (#68), Phi-4 Mini: 22.4 (#195)

BenchmarkGrok 4.3Phi-4 Mini
CritPt8%0%
NYT Connections (extended)55.2%—
Chess Puzzles25%—
LMArena Hard Prompts1396—
DTBench90.7%—
LMCA38.3%—
Epoch Capabilities Index149.16—
ForecastBench60.3—

Math Not comparable

Grok 4.3: 46.0 (#74), Phi-4 Mini: —

BenchmarkGrok 4.3Phi-4 Mini
FrontierMath (Tiers 1-3)42.8%—
FrontierMath Tier 414.6%—
OTIS Mock AIME 2024-202593.3%—
ProofBench11%—
LMArena Math1388—

Knowledge Grok 4.3 leads

Grok 4.3: 52.5 (#62), Phi-4 Mini: 25.3 (#262)

BenchmarkGrok 4.3Phi-4 Mini
GPQA Diamond88.8%—
SimpleQA Verified33.2%—
Vectara Hallucination Rate—23.5%
LMArena Expert1385—

Multimodal Not comparable

Grok 4.3: 31.6 (#104), Phi-4 Mini: —

BenchmarkGrok 4.3Phi-4 Mini
LMArena Vision1229—
Blueprint-Bench 20%—

Multilingual Not comparable

Grok 4.3: 50.5 (#120), Phi-4 Mini: —

BenchmarkGrok 4.3Phi-4 Mini
LMArena Non-English1385—
LMArena Chinese1422—
LMArena French1412—
LMArena German1395—
LMArena Japanese1379—
LMArena Korean1356—
LMArena Russian1399—
LMArena Spanish1398—

Instruction Following Not comparable

Grok 4.3: 72.1 (#140), Phi-4 Mini: —

BenchmarkGrok 4.3Phi-4 Mini
LMArena Instruction Following1366—

Long Context Not comparable

Grok 4.3: 42.5 (#123), Phi-4 Mini: —

BenchmarkGrok 4.3Phi-4 Mini
LMArena Longer Query1393—

Writing & Preference Not comparable

Grok 4.3: 58.5 (#118), Phi-4 Mini: —

BenchmarkGrok 4.3Phi-4 Mini
LMArena Text1397—
LMArena Creative Writing1380—
EQ-Bench 41075—
LMArena Multi-Turn1406—

Frequently asked questions

Is Grok 4.3 better than Phi-4 Mini?

Grok 4.3 is the stronger model overall, scoring 43.8 to 30.9 on the Noometry Index. Phi-4 Mini costs 12× less per token, which makes it the better buy when Grok 4.3's lead doesn't matter for your workload.

Which is cheaper, Grok 4.3 or Phi-4 Mini?

Phi-4 Mini is cheaper. It lists at $0.075 per million input tokens and $0.30 per million output tokens; Grok 4.3 lists at $1.25 and $2.50.

Is Grok 4.3 or Phi-4 Mini better for coding?

Grok 4.3 scores higher on coding benchmarks: 41.6 versus 28.1 in the Noometry coding category.

Which has the bigger context window?

Grok 4.3 does, with 1M tokens against 128K.

How many benchmarks do Grok 4.3 and Phi-4 Mini share?

2 benchmarks have published results for both models. Grok 4.3 has 40 scored results on Noometry and Phi-4 Mini has 3.

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