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Grok 4.5 vs MiniMax M3

Grok 4.5 leads MiniMax M3 on coding, 58.6 to 39.2 on the Vibe Coding Index, and MiniMax M3 costs 5.0x less per output token ($1.20 vs $6.00 per million). Updated October 22, 2026; 106 benchmarks have a result for both.

Replace Grok 4.5 Replace MiniMax M3
Grok 4.5xAI
Coding
58.6
Overall
62.1
Output $/M
$6.00
96
MiniMax M3MiniMax
Coding
39.2
Overall
51.7
Output $/M
$1.20
10
vs boards won of 106 shared

Grok 4.5 or MiniMax M3: which to pick

Pick Grok 4.5 for coding: it scores 58.6 on the Vibe Coding Index against 39.2 for MiniMax M3.

Pick MiniMax M3 for output tokens 5.0x cheaper ($1.20 vs $6.00 per million) and a lower cost per solved task ($0.56 against $0.62).

Model AGrok 4.5xAI58.6/1006 independent benchmarks$0.62 per solved taskModel BMiniMax M3MiniMax39.2/1006 independent benchmarks$0.56 per solved task
Shared results
106
Grok 4.5 only
17
MiniMax M3 only
10
Like-for-like categories
8 of 9

Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.

Which one for your work

Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.

At a glance

Coding index
Grok 4.5 58.6 from 6 benchmarks, MiniMax M3 39.2 from 6 benchmarks.
Widest category
Coding, 14.1 points apart on average over 19 shared benchmarks.
Widest single gap
FrontierCode: Grok 4.5 42.4% against MiniMax M3 14.7%, 42.7 points apart on a 0 to 100 scale.
Output price
Grok 4.5 $6.00 against MiniMax M3 $1.20 per million output tokens, 5.0x apart.
Context window
Grok 4.5 takes 500K tokens, MiniMax M3 1.05M.

Benchmark by benchmark

First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.

Boards won, where both have a result
CategoryGrok 4.5BarsMiniMax M3Ties
Coding190
Intelligence20
Agentic work170
Reasoning121
Math40
Knowledge55
Web design90
General284
All shared boards9610
CodingLike-for-likeSix of these boards feed the Vibe Coding Index190
Coding benchmarks for Grok 4.5 and MiniMax M3
BenchmarkGrok 4.5MiniMax M3Leader
LiveBench coding94.3%70.9%Grok 4.5
LMArena WebDev15531482Grok 4.5
AA Coding Index72.458.6Grok 4.5
LiveCodeBench (Vals AI)87.3%82.2%Grok 4.5
SWE-bench Verified (Vals AI)86.6%75.0%Grok 4.5
Terminal-Bench 4 (Vals AI)8.6%1.0%Grok 4.5
Vibe Code Bench (Vals AI)69.0%47.6%Grok 4.5
Code migration (Vals AI)36.6%19.9%Grok 4.5
ProgramBench (Vals AI)0.0%Not measuredOnly Grok 4.5 measured
IOI (Vals AI)40.6%Not measuredOnly Grok 4.5 measured
Terminal-Bench 2.1 (Vals AI)67.8%53.6%Grok 4.5
SWE-bench Multimodal (Vals AI)Not measured33.3%Only MiniMax M3 measured
Vibe Code Bench 1-100 (Vals AI)Not measured9.2%Only MiniMax M3 measured
SkillsBench (Vals AI)66.0%51.5%Grok 4.5
CyberBench (Vals AI)71.0%65.0%Grok 4.5
SciCode55.0%47.1%Grok 4.5
Terminal-Bench Hard (Artificial Analysis run)Not measured42.4%Only MiniMax M3 measured
FrontierCode42.4%14.7%Grok 4.5
WeirdML46.4%Not measuredOnly Grok 4.5 measured
ALE-Bench1309.3640.0Grok 4.5
LMArena Text: coding14741470Grok 4.5
LMArena Text: software and IT14711466Grok 4.5
LMArena WebDev: React15561478Grok 4.5
LMArena WebDev: HTML15671455Grok 4.5
LMArena WebDev: from an image15621470Grok 4.5
SciCode6.5%Not measuredOnly Grok 4.5 measured
Neither model has a result on the other 13 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Grok 4.5 and MiniMax M3
BenchmarkGrok 4.5MiniMax M3Leader
AA Intelligence Index38.829.2Grok 4.5
Epoch Capabilities Index154.1146.9Grok 4.5
Agentic workLike-for-likePublic boards, shown as published, kept out of the index170
Agentic work benchmarks for Grok 4.5 and MiniMax M3
BenchmarkGrok 4.5MiniMax M3Leader
AA Agentic Index41.229.5Grok 4.5
Design Arena: agents building web apps12181200Grok 4.5
Design Arena: agents building full-stack apps12491197Grok 4.5
Design Arena: agents building mobile apps12201169Grok 4.5
Design Arena: agents building Android apps12361159Grok 4.5
Design Arena: agents building Godot games1229Not measuredOnly Grok 4.5 measured
Design Arena: agents building games12361159Grok 4.5
Design Arena: HTML slides11551130Grok 4.5
Design Arena: PowerPoint slides12091181Grok 4.5
Design Arena: spreadsheetsNot measured1039Only MiniMax M3 measured
LiveBench research85.9%68.0%Grok 4.5
LiveBench browser44.0%8.0%Grok 4.5
LiveBench long agentic27.9%12.4%Grok 4.5
SREBench (Vals AI)0.8%Not measuredOnly Grok 4.5 measured
Finance Agent (Vals AI)48.4%48.3%Grok 4.5
Tax Agent Bench (Vals AI)24.9%20.6%Grok 4.5
Legal Research Bench (Vals AI)38.0%29.8%Grok 4.5
Excel Modeling Benchmark (Vals AI)52.9%47.8%Grok 4.5
Time Horizon Index (Vals AI)6.3%Not measuredOnly Grok 4.5 measured
τ²-Bench TelecomNot measured88.9%Only MiniMax M3 measured
APEX-Agents56.2%37.7%Grok 4.5
OSWorld 2.0Not measured4.6%Only MiniMax M3 measured
PostTrainBench23.4%Not measuredOnly Grok 4.5 measured
Vending-Bench 2$3,887$2,158Grok 4.5
LMArena Search1216Not measuredOnly Grok 4.5 measured
Neither model has a result on the other 16 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index121
Reasoning benchmarks for Grok 4.5 and MiniMax M3
BenchmarkGrok 4.5MiniMax M3Leader
GPQA Diamond92.9%92.7%Grok 4.5
LiveBench reasoning87.2%74.5%Grok 4.5
MMMU Pro (Vals AI)61.8%81.2%MiniMax M3
GPQA Diamond (Artificial Analysis run)93.1%92.9%Grok 4.5
Humanity's Last Exam (Artificial Analysis run)42.7%39.0%Grok 4.5
GPQA Diamond (Epoch AI run)93.4%90.9%Grok 4.5
ARC-AGI87.2%Not measuredOnly Grok 4.5 measured
ARC-AGI-252.6%Not measuredOnly Grok 4.5 measured
SimpleBench70.0%45.8%Grok 4.5
Chess puzzles35.0%13.0%Grok 4.5
Mystery game puzzlesNot measured8.0%Only MiniMax M3 measured
LMArena Text: hard prompts14621447Grok 4.5
LMArena Text: expert14651461Grok 4.5
LMArena Text: hard prompts in English14641455Grok 4.5
LMArena Vision: diagrams13041266Grok 4.5
LMArena Vision: homework12951268Grok 4.5
Kagi LLM Benchmark83.5%Not measuredOnly Grok 4.5 measured
Neither model has a result on the other 5 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index40
Math benchmarks for Grok 4.5 and MiniMax M3
BenchmarkGrok 4.5MiniMax M3Leader
OTIS Mock AIME97.8%71.1%Grok 4.5
FrontierMath, tiers 1 to 357.2%Not measuredOnly Grok 4.5 measured
FrontierMath, tier 424.4%Not measuredOnly Grok 4.5 measured
ProofBench31.0%18.0%Grok 4.5
LMArena Text: math14601429Grok 4.5
LMArena Text: mathematical work14821448Grok 4.5
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index55
Knowledge benchmarks for Grok 4.5 and MiniMax M3
BenchmarkGrok 4.5MiniMax M3Leader
MMLU Pro89.2%84.2%Grok 4.5
LegalBench (Vals AI)86.0%85.4%Grok 4.5
CorpFin (Vals AI)67.4%68.1%MiniMax M3
TaxEval (Vals AI)71.7%72.7%MiniMax M3
MortgageTax (Vals AI)61.8%68.4%MiniMax M3
MedCode (Vals AI)43.3%46.3%MiniMax M3
SimpleQA Verified48.3%Not measuredOnly Grok 4.5 measured
LMArena Text: science14641452Grok 4.5
LMArena Text: medicine and healthcare14401441MiniMax M3
LMArena Text: legal and government14631437Grok 4.5
LMArena Text: business and finance14411434Grok 4.5
FACTS Benchmark Suite50.2%Not measuredOnly Grok 4.5 measured
Neither model has a result on the other 6 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index90
Web design benchmarks for Grok 4.5 and MiniMax M3
BenchmarkGrok 4.5MiniMax M3Leader
Design Arena: websites12811257Grok 4.5
Design Arena: UI components12771243Grok 4.5
Design Arena: game dev12631211Grok 4.5
Design Arena: data viz12661236Grok 4.5
Design Arena: 3D12571208Grok 4.5
Design Arena: all code categories12751246Grok 4.5
Design Arena: SVG12141160Grok 4.5
Design Arena: ASCII art12571161Grok 4.5
LiveBench design78.1%66.2%Grok 4.5
GeneralLike-for-likePublic boards, shown as published, kept out of the index284
General benchmarks for Grok 4.5 and MiniMax M3
BenchmarkGrok 4.5MiniMax M3Leader
LiveBench data analysis73.0%76.2%MiniMax M3
Public Benefits Bench (Vals AI)Not measured64.1%Only MiniMax M3 measured
SAGE (Vals AI)35.0%50.6%MiniMax M3
MedScribe (Vals AI)86.9%87.3%MiniMax M3
Vals Multimodal Index63.4%60.0%Grok 4.5
IFBenchNot measured82.9%Only MiniMax M3 measured
Long context reasoning (AA-LCR)79.3%83.0%MiniMax M3
DTBench96.5%78.9%Grok 4.5
LMCA45.2%33.7%Grok 4.5
Surface Evolver Bench74.4%55.0%Grok 4.5
Furniture assembly22.5%Not measuredOnly Grok 4.5 measured
LMArena Text14481433Grok 4.5
LMArena Text: instruction following14451433Grok 4.5
LMArena Text: creative writing14421404Grok 4.5
LMArena Vision12871251Grok 4.5
LMArena Text: English14531443Grok 4.5
LMArena Text: non-English14401420Grok 4.5
LMArena Text: Chinese14951466Grok 4.5
LMArena Text: German14481428Grok 4.5
LMArena Text: Japanese14301380Grok 4.5
LMArena Text: Korean14061373Grok 4.5
LMArena Text: French14571444Grok 4.5
LMArena Text: Spanish14511433Grok 4.5
LMArena Text: Russian14491426Grok 4.5
LMArena Text: Polish14321423Grok 4.5
LMArena Text: multi-turn14561443Grok 4.5
LMArena Text: longer queries14621446Grok 4.5
LMArena Text: writing and language14451419Grok 4.5
LMArena Text: entertainment and media14341403Grok 4.5
LMArena Vision: English12851263Grok 4.5
LMArena Vision: Chinese13451311Grok 4.5
LMArena Vision: reading text12931259Grok 4.5
LMArena Vision: humor12761235Grok 4.5
LMArena Vision: recognizing thingsNot measured1197Only MiniMax M3 measured
LMArena Vision: creative writing12931234Grok 4.5
LMArena Document14521435Grok 4.5
Neither model has a result on the other 10 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Grok 4.5 and MiniMax M3
BenchmarkGrok 4.5MiniMax M3Leader
Neither model has a result on 5 boards here

What each workload costs

Three fixed token mixes at each model's listed price, so per-token rates become a bill.

Chat turn

1K input + 500 output tokens

Grok 4.5$0.0050Fits in one request
MiniMax M3$0.0009Fits in one request

MiniMax M3 costs less

Repository review

50K input + 3K output tokens

Grok 4.5$0.118Fits in one request
MiniMax M3$0.019Fits in one request

MiniMax M3 costs less

Agent loop

200K input + 10K output tokens

Grok 4.5$0.460Fits in one request
MiniMax M3$0.072Fits in one request

MiniMax M3 costs less

Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.

Specification differences

The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.

Specifications of Grok 4.5 and MiniMax M3
SpecificationSpaceXAI Grok 4.5MiniMax M3
MakerxAIMiniMax
WeightsNo public weights listedOpen weights
ReleasedJuly 8, 2026May 31, 2026
Context window500K1.05M
Input $/Mtok$2.00$0.30
Output $/Mtok$6.00$1.20
Coding index58.639.2
Independent measurements behind it66
Cost per solved task$0.62$0.56
SourceOpenRouter listingOpenRouter listing

Questions

Is Grok 4.5 better than MiniMax M3 for coding?

Pick Grok 4.5 for coding: it scores 58.6 on the Vibe Coding Index against 39.2 for MiniMax M3. Pick MiniMax M3 for output tokens 5.0x cheaper ($1.20 vs $6.00 per million) and a lower cost per solved task ($0.56 against $0.62).

Which is cheaper, Grok 4.5 or MiniMax M3?

Grok 4.5 costs $2.00 per million input tokens and $6.00 per million output tokens; MiniMax M3 costs $0.30 and $1.20. Per solved SWE-bench Verified task, Grok 4.5 costs $0.62 and MiniMax M3 $0.56.

Which has the bigger context window, Grok 4.5 or MiniMax M3?

MiniMax M3, with 1.05M tokens against 500K.

How many benchmarks is the Grok 4.5 vs MiniMax M3 comparison based on?

106 benchmarks have a result for both models as of October 22, 2026. Grok 4.5's coding index rests on 6 independent benchmarks and MiniMax M3's on 6. Where only one model has a result, the page says so instead of naming a winner.

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<p style="font:13px/1.4 sans-serif;margin:6px 0 0">Source: <a href="https://llmbenchmark.ai/compare/grok-4-5-vs-minimax-minimax-m3">LLMBenchmark.ai, Grok 4.5 vs MiniMax M3</a></p>