Noometry

Model comparison

Grok 4.5 vs MiniMax-M2.7

Grok 4.5 is the stronger model overall, scoring 55.0 to 37.7 on the Noometry Index. MiniMax-M2.7 costs 5.7× less per token, which makes it the better buy when Grok 4.5's lead doesn't matter for your workload.

Last verified . 26 shared benchmarks.

Grok 4.5 xAI

55.0

Rank #25 Confirmed

MiniMax-M2.7 MiniMax

37.7

Rank #196 Confirmed

Summary

  • They share 26 benchmarks with published results for both. Grok 4.5 scores higher in 9 categories and MiniMax-M2.7 in 0 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Grok 4.5 leads 56.1 to 19.7.
  • The biggest single-benchmark swing is GBAEval: 65.4% for Grok 4.5 and 0% for MiniMax-M2.7.
  • MiniMax-M2.7 is cheaper at $0.30 / $1.20 per million input/output tokens, against $2 / $6 for Grok 4.5.
  • Grok 4.5 accepts more context: 500K tokens versus 205K.
  • MiniMax-M2.7 has downloadable open weights; the other is API-only.

Side by side

Grok 4.5MiniMax-M2.7
ProviderxAIMiniMax
Noometry Index55.037.7
Released2026-07-082026-03-18
WeightsProprietaryOpen
Context window500K205K
Max output500K131K
Input $ / M tokens$2$0.30
Output $ / M tokens$6$1.20
Results tracked5230

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Category by category

Coding Grok 4.5 leads

Grok 4.5: 52.2 (#35), MiniMax-M2.7: 41.8 (#120)

BenchmarkGrok 4.5MiniMax-M2.7
LMArena WebDev15531398
SciCode54.1%47%
WeirdML46.4%37%
LMArena Coding14741454
ALE-Bench1,309599.25
DeepSWE53.8%—
FrontierCode42.4%—

Agentic & Tool Use Grok 4.5 leads

Grok 4.5: 44.4 (#17), MiniMax-M2.7: 25.1 (#111)

BenchmarkGrok 4.5MiniMax-M2.7
GBAEval65.4%0%
Terminal-Bench—45.1%
APEX-Agents56.2%—
τ²-bench Banking47.9%—
PostTrainBench23.4%—
ExploitBench—13.3%
GDP.pdf14%—
LMArena Search1213—
Vending-Bench 23,887—

Reasoning Grok 4.5 leads

Grok 4.5: 56.1 (#25), MiniMax-M2.7: 19.7 (#253)

BenchmarkGrok 4.5MiniMax-M2.7
NYT Connections (extended)79.9%24.7%
CritPt15.4%0.6%
LMArena Hard Prompts14621422
Epoch Capabilities Index153.92145.85
ARC-AGI-252.6%—
SimpleBench70%—
Kagi LLM Benchmark83.5%—
ARC-AGI-187.2%—
Chess Puzzles36%—
Thematic Generalization—39.3%
DTBench96.5%—
LMCA45.2%—
Surface Evolver Bench74.4%—

Math Grok 4.5 leads

Grok 4.5: 60.9 (#35), MiniMax-M2.7: 25.9 (#263)

BenchmarkGrok 4.5MiniMax-M2.7
ProofBench31%3%
LMArena Math14591420
FrontierMath (Tiers 1-3)57.2%—
FrontierMath Tier 424.4%—
OTIS Mock AIME 2024-202597.8%—

Knowledge Grok 4.5 leads

Grok 4.5: 62.3 (#24), MiniMax-M2.7: 37.7 (#152)

BenchmarkGrok 4.5MiniMax-M2.7
LMArena Expert14661444
GPQA Diamond93.4%—
SimpleQA Verified48.3%—
Vectara Hallucination Rate—12.9%

Multimodal Not comparable

Grok 4.5: 37.6 (#72), MiniMax-M2.7: —

BenchmarkGrok 4.5MiniMax-M2.7
LMArena Vision1288—
Blueprint-Bench 227.3%—
Furniture Assembly22.5%—
LMArena Document1452—

Multilingual Grok 4.5 leads

Grok 4.5: 54.4 (#42), MiniMax-M2.7: 50.3 (#123)

BenchmarkGrok 4.5MiniMax-M2.7
LMArena Non-English14401382
LMArena Chinese14961441
LMArena French14561421
LMArena German14461398
LMArena Japanese14281262
LMArena Korean14041313
LMArena Russian14481383
LMArena Spanish14501403

Instruction Following Grok 4.5 leads

Grok 4.5: 76.0 (#48), MiniMax-M2.7: 74.1 (#103)

BenchmarkGrok 4.5MiniMax-M2.7
LMArena Instruction Following14461405

Long Context Grok 4.5 leads

Grok 4.5: 44.8 (#56), MiniMax-M2.7: 43.3 (#99)

BenchmarkGrok 4.5MiniMax-M2.7
LMArena Longer Query14631419

Writing & Preference Grok 4.5 leads

Grok 4.5: 65.8 (#42), MiniMax-M2.7: 58.9 (#112)

BenchmarkGrok 4.5MiniMax-M2.7
LMArena Text14481405
LMArena Creative Writing14421354
LMArena Multi-Turn14561412
EQ-Bench Creative Writing1579—

Frequently asked questions

Is Grok 4.5 better than MiniMax-M2.7?

Grok 4.5 is the stronger model overall, scoring 55.0 to 37.7 on the Noometry Index. MiniMax-M2.7 costs 5.7× less per token, which makes it the better buy when Grok 4.5's lead doesn't matter for your workload.

Which is cheaper, Grok 4.5 or MiniMax-M2.7?

MiniMax-M2.7 is cheaper. It lists at $0.30 per million input tokens and $1.20 per million output tokens; Grok 4.5 lists at $2 and $6.

Is Grok 4.5 or MiniMax-M2.7 better for coding?

Grok 4.5 scores higher on coding benchmarks: 52.2 versus 41.8 in the Noometry coding category.

Which has the bigger context window?

Grok 4.5 does, with 500K tokens against 205K.

How many benchmarks do Grok 4.5 and MiniMax-M2.7 share?

26 benchmarks have published results for both models. Grok 4.5 has 52 scored results on Noometry and MiniMax-M2.7 has 30.

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