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Grok 4.3 vs MiniMax M3

MiniMax M3 leads Grok 4.3 on coding, 39.2 to 37.4 on the Vibe Coding Index, and MiniMax M3 costs 2.1x less per output token ($1.20 vs $2.50 per million). Updated October 22, 2026; 97 benchmarks have a result for both.

Replace Grok 4.3 Replace MiniMax M3
Grok 4.3xAI
Coding
37.4
Overall
53.1
Output $/M
$2.50
14
MiniMax M3MiniMax
Coding
39.2
Overall
51.7
Output $/M
$1.20
83
vs boards won of 97 shared

Grok 4.3 or MiniMax M3: which to pick

Grok 4.3 and MiniMax M3 are level for coding, 37.4 against 39.2 on the Vibe Coding Index, so price and context decide.

Pick Grok 4.3 for a lower cost per solved task ($0.31 against $0.56) and work measured by LiveCodeBench (Vals AI) or SciCode, where it leads. Pick MiniMax M3 for output tokens 2.1x cheaper ($1.20 vs $2.50 per million) and a larger context window (1.05M against 1M tokens).

Model AGrok 4.3xAI37.4/1003 independent benchmarks$0.31 per solved taskModel BMiniMax M3MiniMax39.2/1006 independent benchmarks$0.56 per solved task
Shared results
97
Grok 4.3 only
8
MiniMax M3 only
19
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 4.3 37.4 from 3 benchmarks, MiniMax M3 39.2 from 6 benchmarks.
Widest category
Agentic work, 17.3 points apart on average over 15 shared benchmarks.
Widest single gap
SAGE (Vals AI): Grok 4.3 19.7% against MiniMax M3 50.6%, 30.8 points apart on a 0 to 100 scale.
Output price
Grok 4.3 $2.50 against MiniMax M3 $1.20 per million output tokens, 2.1x apart.
Context window
Grok 4.3 takes 1M 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 4.3BarsMiniMax M3Ties
Coding313
Intelligence01
Agentic work114
Reasoning29
Math13
Knowledge28
Web design08
General527
All shared boards1483
CodingLike-for-likeSix of these boards feed the Vibe Coding Index313
Coding benchmarks for Grok 4.3 and MiniMax M3
BenchmarkGrok 4.3MiniMax M3Leader
LiveBench codingNot measured70.9%Only MiniMax M3 measured
LMArena WebDev13581482MiniMax M3
AA Coding Index42.258.6MiniMax M3
LiveCodeBench (Vals AI)84.5%82.2%Grok 4.3
SWE-bench Verified (Vals AI)71.4%75.0%MiniMax M3
Terminal-Bench 4 (Vals AI)Not measured1.0%Only MiniMax M3 measured
Vibe Code Bench (Vals AI)19.4%47.6%MiniMax M3
Code migration (Vals AI)6.8%19.9%MiniMax M3
ProgramBench (Vals AI)0.0%Not measuredOnly Grok 4.3 measured
Terminal-Bench 2.1 (Vals AI)42.0%53.6%MiniMax M3
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)40.6%51.5%MiniMax M3
CyberBench (Vals AI)Not measured65.0%Only MiniMax M3 measured
SciCode48.3%47.1%Grok 4.3
Terminal-Bench Hard (Artificial Analysis run)37.9%42.4%MiniMax M3
FrontierCodeNot measured14.7%Only MiniMax M3 measured
WeirdML49.9%Not measuredOnly Grok 4.3 measured
ALE-Bench944.2640.0Grok 4.3
LMArena Text: coding14151470MiniMax M3
LMArena Text: software and IT14161466MiniMax M3
LMArena WebDev: React13531478MiniMax M3
LMArena WebDev: HTML13671455MiniMax M3
LMArena WebDev: from an image13751470MiniMax M3
Neither model has a result on the other 15 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
Intelligence benchmarks for Grok 4.3 and MiniMax M3
BenchmarkGrok 4.3MiniMax M3Leader
AA Intelligence Index24.929.2MiniMax M3
Epoch Capabilities IndexNot measured146.9Only MiniMax M3 measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index114
Agentic work benchmarks for Grok 4.3 and MiniMax M3
BenchmarkGrok 4.3MiniMax M3Leader
AA Agentic Index15.529.5MiniMax M3
Design Arena: agents building web apps11261200MiniMax M3
Design Arena: agents building full-stack apps10061197MiniMax M3
Design Arena: agents building mobile apps10581169MiniMax M3
Design Arena: agents building Android apps9621159MiniMax M3
Design Arena: agents building Godot games914Not measuredOnly Grok 4.3 measured
Design Arena: agents building games10071158MiniMax M3
Design Arena: HTML slides9591130MiniMax M3
Design Arena: PowerPoint slides9881181MiniMax M3
Design Arena: spreadsheets8791028MiniMax M3
LiveBench researchNot measured68.0%Only MiniMax M3 measured
LiveBench browserNot measured8.0%Only MiniMax M3 measured
LiveBench long agenticNot measured12.4%Only MiniMax M3 measured
Finance Agent (Vals AI)37.7%48.3%MiniMax M3
Tax Agent Bench (Vals AI)6.2%20.6%MiniMax M3
Legal Research Bench (Vals AI)15.4%29.8%MiniMax M3
Excel Modeling Benchmark (Vals AI)18.4%47.8%MiniMax M3
τ²-Bench Telecom97.7%88.9%Grok 4.3
APEX-AgentsNot measured37.7%Only MiniMax M3 measured
OSWorld 2.0Not measured4.6%Only MiniMax M3 measured
Vending-Bench 2$35$2,158MiniMax M3
LMArena Search1166Not measuredOnly Grok 4.3 measured
Neither model has a result on the other 19 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index29
Reasoning benchmarks for Grok 4.3 and MiniMax M3
BenchmarkGrok 4.3MiniMax M3Leader
GPQA Diamond91.4%92.7%MiniMax M3
LiveBench reasoningNot measured74.5%Only MiniMax M3 measured
MMMU Pro (Vals AI)83.1%81.2%Grok 4.3
GPQA Diamond (Artificial Analysis run)90.1%92.9%MiniMax M3
Humanity's Last Exam (Artificial Analysis run)37.2%39.0%MiniMax M3
GPQA Diamond (Epoch AI run)88.8%90.9%MiniMax M3
SimpleBenchNot measured45.8%Only MiniMax M3 measured
Chess puzzles18.0%13.0%Grok 4.3
Mystery game puzzlesNot measured8.0%Only MiniMax M3 measured
LMArena Text: hard prompts13961447MiniMax M3
LMArena Text: expert13841461MiniMax M3
LMArena Text: hard prompts in English14021455MiniMax M3
LMArena Vision: diagrams12411266MiniMax M3
LMArena Vision: homework12411268MiniMax M3
Neither model has a result on the other 8 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index13
Math benchmarks for Grok 4.3 and MiniMax M3
BenchmarkGrok 4.3MiniMax M3Leader
OTIS Mock AIME93.3%71.1%Grok 4.3
FrontierMath, tiers 1 to 342.8%Not measuredOnly Grok 4.3 measured
FrontierMath, tier 414.6%Not measuredOnly Grok 4.3 measured
ProofBench11.0%18.0%MiniMax M3
LMArena Text: math13871429MiniMax M3
LMArena Text: mathematical work13961448MiniMax M3
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index28
Knowledge benchmarks for Grok 4.3 and MiniMax M3
BenchmarkGrok 4.3MiniMax M3Leader
MMLU Pro85.8%84.2%Grok 4.3
LegalBench (Vals AI)84.5%85.4%MiniMax M3
CaseLaw (Vals AI)79.3%Not measuredOnly Grok 4.3 measured
CorpFin (Vals AI)68.5%68.1%Grok 4.3
TaxEval (Vals AI)70.8%72.7%MiniMax M3
MortgageTax (Vals AI)48.3%68.4%MiniMax M3
MedCode (Vals AI)38.1%46.3%MiniMax M3
SimpleQA Verified33.2%Not measuredOnly Grok 4.3 measured
LMArena Text: science13991452MiniMax M3
LMArena Text: medicine and healthcare13841441MiniMax M3
LMArena Text: legal and government13861437MiniMax M3
LMArena Text: business and finance13811434MiniMax M3
Neither model has a result on the other 6 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index08
Web design benchmarks for Grok 4.3 and MiniMax M3
BenchmarkGrok 4.3MiniMax M3Leader
Design Arena: websites11961257MiniMax M3
Design Arena: UI components11901242MiniMax M3
Design Arena: game dev11731210MiniMax M3
Design Arena: data viz11791236MiniMax M3
Design Arena: 3D11241208MiniMax M3
Design Arena: all code categories11861247MiniMax M3
Design Arena: SVG10801161MiniMax M3
Design Arena: ASCII art11251161MiniMax M3
LiveBench designNot measured66.2%Only MiniMax M3 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index527
General benchmarks for Grok 4.3 and MiniMax M3
BenchmarkGrok 4.3MiniMax M3Leader
LiveBench data analysisNot measured76.2%Only MiniMax M3 measured
Public Benefits Bench (Vals AI)51.7%64.1%MiniMax M3
SAGE (Vals AI)19.7%50.6%MiniMax M3
MedScribe (Vals AI)74.4%87.3%MiniMax M3
Vals Multimodal Index43.3%60.0%MiniMax M3
IFBench83.3%82.9%Grok 4.3
Long context reasoning (AA-LCR)75.0%83.0%MiniMax M3
DTBench90.7%78.9%Grok 4.3
LMCA38.3%33.7%Grok 4.3
Surface Evolver BenchNot measured55.0%Only MiniMax M3 measured
LMArena Text13971433MiniMax M3
LMArena Text: instruction following13661433MiniMax M3
LMArena Text: creative writing13801404MiniMax M3
LMArena Vision12291251MiniMax M3
LMArena Text: English14041443MiniMax M3
LMArena Text: non-English13851420MiniMax M3
LMArena Text: Chinese14221466MiniMax M3
LMArena Text: German13951428MiniMax M3
LMArena Text: Japanese13791380MiniMax M3
LMArena Text: Korean13541373MiniMax M3
LMArena Text: French14111444MiniMax M3
LMArena Text: Spanish13991433MiniMax M3
LMArena Text: Russian13991426MiniMax M3
LMArena Text: Polish13981423MiniMax M3
LMArena Text: multi-turn14061443MiniMax M3
LMArena Text: longer queries13931446MiniMax M3
LMArena Text: writing and language13851419MiniMax M3
LMArena Text: entertainment and media13701403MiniMax M3
LMArena Vision: English12351263MiniMax M3
LMArena Vision: Chinese12571311MiniMax M3
LMArena Vision: reading text12351259MiniMax M3
LMArena Vision: humor12221235MiniMax M3
LMArena Vision: recognizing things12171197Grok 4.3
LMArena Vision: creative writing12371234Grok 4.3
LMArena DocumentNot measured1435Only MiniMax M3 measured
Neither model has a result on the other 11 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Grok 4.3 and MiniMax M3
BenchmarkGrok 4.3MiniMax 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 4.3$0.0025Fits in one request
MiniMax M3$0.0009Fits in one request

MiniMax M3 costs less

Repository review

50K input + 3K output tokens

Grok 4.3$0.070Fits in one request
MiniMax M3$0.019Fits in one request

MiniMax M3 costs less

Agent loop

200K input + 10K output tokens

Grok 4.3$0.275Fits 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 4.3 and MiniMax M3
SpecificationSpaceXAI Grok 4.3MiniMax M3
MakerxAIMiniMax
WeightsNo public weights listedOpen weights
ReleasedApril 30, 2026May 31, 2026
Context window1M1.05M
Input $/Mtok$1.25$0.30
Output $/Mtok$2.50$1.20
Coding index37.439.2
Independent measurements behind it36
Cost per solved task$0.31$0.56
SourceOpenRouter listingOpenRouter listing

Questions

Is Grok 4.3 better than MiniMax M3 for coding?

Grok 4.3 and MiniMax M3 are level for coding, 37.4 against 39.2 on the Vibe Coding Index, so price and context decide. Pick Grok 4.3 for a lower cost per solved task ($0.31 against $0.56) and work measured by LiveCodeBench (Vals AI) or SciCode, where it leads. Pick MiniMax M3 for output tokens 2.1x cheaper ($1.20 vs $2.50 per million) and a larger context window (1.05M against 1M tokens).

Which is cheaper, Grok 4.3 or MiniMax M3?

Grok 4.3 costs $1.25 per million input tokens and $2.50 per million output tokens; MiniMax M3 costs $0.30 and $1.20. Per solved SWE-bench Verified task, Grok 4.3 costs $0.31 and MiniMax M3 $0.56.

Which has the bigger context window, Grok 4.3 or MiniMax M3?

MiniMax M3, with 1.05M tokens against 1M.

How many benchmarks is the Grok 4.3 vs MiniMax M3 comparison based on?

97 benchmarks have a result for both models as of October 22, 2026. Grok 4.3's coding index rests on 3 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-4-3-vs-minimax-minimax-m3">LLMBenchmark.ai, Grok 4.3 vs MiniMax M3</a></p>