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Grok 4.3 vs MiniMax M2.5

Updated October 21, 2026. 57 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace Grok 4.3 Replace MiniMax M2.5
Grok 4.3xAI
Coding
22.5
Overall
24.9
Output $/M
$2.50
48
MiniMax M2.5MiniMax
Coding
59.4
Overall
22.8
Output $/M
$0.95
9
vs boards won of 57 shared

Decision reading

Pick MiniMax M2.5 for coding: it scores 59.4 on the Vibe Coding Index against 22.5 for Grok 4.3.

Pick Grok 4.3 when a solved task costs $0.31 against $0.62, or when the context window is larger, 1M against 205K tokens.

Model AGrok 4.3xAI22.5/1001 independent benchmark$0.31 per solved taskModel BMiniMax M2.5MiniMax59.4/1002 independent benchmarks$0.62 per solved task
Shared results
57
Grok 4.3 only
47
MiniMax M2.5 only
10
Like-for-like categories
8 of 9

Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.

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 22.5 from 1 benchmark, MiniMax M2.5 59.4 from 2 benchmarks.
Widest category
General, 8.7 points apart on average over 19 shared benchmarks.
Widest single gap
LMArena Text: Japanese: Grok 4.3 1379 against MiniMax M2.5 1171, 34.6 points apart on a 0 to 100 scale.
Output price
Grok 4.3 $2.50 against MiniMax M2.5 $0.95 per million output tokens, 2.6x apart.
Context window
Grok 4.3 takes 1M tokens, MiniMax M2.5 205K.

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 M2.5Ties
Coding64
Intelligence10
Agentic work20
Reasoning60
Math30
Knowledge90
Web design25
General190
All shared boards489
CodingLike-for-likeFour of these boards feed the Vibe Coding Index64
Coding benchmarks for Grok 4.3 and MiniMax M2.5
BenchmarkGrok 4.3MiniMax M2.5Leader
SWE-bench VerifiedNot measured75.8%Only MiniMax M2.5 measured
SWE-bench MultilingualNot measured68.3%Only MiniMax M2.5 measured
LMArena WebDev13581386MiniMax M2.5
AA Coding Index42.2Not measuredOnly Grok 4.3 measured
LiveCodeBench (Vals AI)84.5%79.2%Grok 4.3
SWE-bench Verified (Vals AI)71.4%74.2%MiniMax M2.5
Vibe Code Bench (Vals AI)19.4%14.8%Grok 4.3
Code migration (Vals AI)6.8%Not measuredOnly Grok 4.3 measured
ProgramBench (Vals AI)0.0%Not measuredOnly Grok 4.3 measured
Terminal-Bench 2.1 (Vals AI)42.0%Not measuredOnly Grok 4.3 measured
SkillsBench (Vals AI)40.6%Not measuredOnly Grok 4.3 measured
SciCode48.3%Not measuredOnly Grok 4.3 measured
Terminal-Bench Hard (Artificial Analysis run)37.9%34.8%Grok 4.3
Terminal-BenchNot measured42.7%Only MiniMax M2.5 measured
WeirdML49.9%Not measuredOnly Grok 4.3 measured
ALE-Bench944.2618.2Grok 4.3
LMArena Text: coding14151380Grok 4.3
LMArena Text: software and IT14161383Grok 4.3
LMArena WebDev: React13531374MiniMax M2.5
LMArena WebDev: HTML13671414MiniMax M2.5
LMArena WebDev: from an image1375Not measuredOnly Grok 4.3 measured
Neither model has a result on the other 17 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
Intelligence benchmarks for Grok 4.3 and MiniMax M2.5
BenchmarkGrok 4.3MiniMax M2.5Leader
AA Intelligence Index24.922.8Grok 4.3
Epoch Capabilities IndexNot measured146.6Only MiniMax M2.5 measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index20
Agentic work benchmarks for Grok 4.3 and MiniMax M2.5
BenchmarkGrok 4.3MiniMax M2.5Leader
AA Agentic Index15.5Not measuredOnly Grok 4.3 measured
Design Arena: agents building web apps1126Not measuredOnly Grok 4.3 measured
Design Arena: agents building full-stack apps1006Not measuredOnly Grok 4.3 measured
Design Arena: agents building mobile apps1059Not measuredOnly Grok 4.3 measured
Design Arena: agents building Android apps967Not measuredOnly Grok 4.3 measured
Design Arena: agents building Godot games914Not measuredOnly Grok 4.3 measured
Design Arena: agents building games1007Not measuredOnly Grok 4.3 measured
Design Arena: HTML slides1008Not measuredOnly Grok 4.3 measured
Design Arena: PowerPoint slides1012Not measuredOnly Grok 4.3 measured
Finance Agent (Vals AI)37.7%Not measuredOnly Grok 4.3 measured
Tax Agent Bench (Vals AI)6.2%Not measuredOnly Grok 4.3 measured
Legal Research Bench (Vals AI)15.4%Not measuredOnly Grok 4.3 measured
Excel Modeling Benchmark (Vals AI)18.4%Not measuredOnly Grok 4.3 measured
τ²-Bench Telecom97.7%95.3%Grok 4.3
Vending-Bench 2$35-$23Grok 4.3
LMArena Search1166Not measuredOnly Grok 4.3 measured
Neither model has a result on the other 23 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index60
Reasoning benchmarks for Grok 4.3 and MiniMax M2.5
BenchmarkGrok 4.3MiniMax M2.5Leader
GPQA Diamond91.4%82.1%Grok 4.3
MMMU Pro (Vals AI)83.1%Not measuredOnly Grok 4.3 measured
GPQA Diamond (Artificial Analysis run)90.1%84.8%Grok 4.3
Humanity's Last Exam (Artificial Analysis run)37.2%20.5%Grok 4.3
GPQA Diamond (Epoch AI run)88.8%Not measuredOnly Grok 4.3 measured
ARC-AGINot measured63.7%Only MiniMax M2.5 measured
ARC-AGI-2Not measured4.9%Only MiniMax M2.5 measured
Chess puzzles18.0%Not measuredOnly Grok 4.3 measured
LMArena Text: hard prompts13961372Grok 4.3
LMArena Text: expert13841378Grok 4.3
LMArena Text: hard prompts in English14021384Grok 4.3
LMArena Vision: diagrams1241Not measuredOnly Grok 4.3 measured
LMArena Vision: homework1241Not measuredOnly Grok 4.3 measured
Neither model has a result on the other 8 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index30
Math benchmarks for Grok 4.3 and MiniMax M2.5
BenchmarkGrok 4.3MiniMax M2.5Leader
AIMENot measured88.8%Only MiniMax M2.5 measured
OTIS Mock AIME93.3%Not measuredOnly Grok 4.3 measured
FrontierMath, tiers 1 to 342.8%Not measuredOnly Grok 4.3 measured
FrontierMath, tier 414.6%Not measuredOnly Grok 4.3 measured
ProofBench11.0%4.0%Grok 4.3
LMArena Text: math13871378Grok 4.3
LMArena Text: mathematical work13961378Grok 4.3
Neither model has a result on the other 6 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index90
Knowledge benchmarks for Grok 4.3 and MiniMax M2.5
BenchmarkGrok 4.3MiniMax M2.5Leader
MMLU Pro85.8%80.1%Grok 4.3
LegalBench (Vals AI)84.5%80.0%Grok 4.3
CaseLaw (Vals AI)79.3%53.5%Grok 4.3
CorpFin (Vals AI)68.5%59.6%Grok 4.3
TaxEval (Vals AI)70.8%68.2%Grok 4.3
MortgageTax (Vals AI)48.3%Not measuredOnly Grok 4.3 measured
MedQA (Vals AI)Not measured92.5%Only MiniMax M2.5 measured
MedCode (Vals AI)38.1%Not measuredOnly Grok 4.3 measured
SimpleQA Verified33.2%Not measuredOnly Grok 4.3 measured
LMArena Text: science13991369Grok 4.3
LMArena Text: medicine and healthcare13841357Grok 4.3
LMArena Text: legal and government13861366Grok 4.3
LMArena Text: business and finance13811356Grok 4.3
Neither model has a result on the other 4 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index25
Web design benchmarks for Grok 4.3 and MiniMax M2.5
BenchmarkGrok 4.3MiniMax M2.5Leader
Design Arena: websites11961222MiniMax M2.5
Design Arena: UI components11921172Grok 4.3
Design Arena: game dev11741176MiniMax M2.5
Design Arena: data viz11801171Grok 4.3
Design Arena: 3D11251170MiniMax M2.5
Design Arena: all code categories11871207MiniMax M2.5
Design Arena: SVG10811147MiniMax M2.5
Design Arena: ASCII art1125Not measuredOnly Grok 4.3 measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index190
General benchmarks for Grok 4.3 and MiniMax M2.5
BenchmarkGrok 4.3MiniMax M2.5Leader
Public Benefits Bench (Vals AI)51.7%Not measuredOnly Grok 4.3 measured
SAGE (Vals AI)19.7%Not measuredOnly Grok 4.3 measured
MedScribe (Vals AI)74.4%Not measuredOnly Grok 4.3 measured
Vals Multimodal Index43.3%Not measuredOnly Grok 4.3 measured
IFBench83.3%71.6%Grok 4.3
Long context reasoning (AA-LCR)75.0%73.3%Grok 4.3
DTBench90.7%Not measuredOnly Grok 4.3 measured
LMCA38.3%Not measuredOnly Grok 4.3 measured
CL-benchNot measured11.4%Only MiniMax M2.5 measured
CL-bench LifeNot measured6.3%Only MiniMax M2.5 measured
LMArena Text13971359Grok 4.3
LMArena Text: instruction following13661353Grok 4.3
LMArena Text: creative writing13801331Grok 4.3
LMArena Vision1229Not measuredOnly Grok 4.3 measured
LMArena Text: English14041380Grok 4.3
LMArena Text: non-English13851338Grok 4.3
LMArena Text: Chinese14221393Grok 4.3
LMArena Text: German13951361Grok 4.3
LMArena Text: Japanese13791171Grok 4.3
LMArena Text: Korean13541233Grok 4.3
LMArena Text: French14111363Grok 4.3
LMArena Text: Spanish13991353Grok 4.3
LMArena Text: Russian13991359Grok 4.3
LMArena Text: Polish13981334Grok 4.3
LMArena Text: multi-turn14061364Grok 4.3
LMArena Text: longer queries13931366Grok 4.3
LMArena Text: writing and language13851345Grok 4.3
LMArena Text: entertainment and media13701329Grok 4.3
LMArena Vision: English1235Not measuredOnly Grok 4.3 measured
LMArena Vision: Chinese1257Not measuredOnly Grok 4.3 measured
LMArena Vision: reading text1235Not measuredOnly Grok 4.3 measured
LMArena Vision: humor1222Not measuredOnly Grok 4.3 measured
LMArena Vision: recognizing things1217Not measuredOnly Grok 4.3 measured
LMArena Vision: creative writing1237Not measuredOnly Grok 4.3 measured
Neither model has a result on the other 12 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 M2.5
BenchmarkGrok 4.3MiniMax M2.5Leader
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 M2.5$0.0007Fits in one request

MiniMax M2.5 costs less

Repository review

50K input + 3K output tokens

Grok 4.3$0.070Fits in one request
MiniMax M2.5$0.016Fits in one request

MiniMax M2.5 costs less

Agent loop

200K input + 10K output tokens

Grok 4.3$0.275Fits in one request
MiniMax M2.5$0.064Exceeds the context window

MiniMax M2.5 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 M2.5
SpecificationSpaceXAI Grok 4.3MiniMax M2.5
MakerxAIMiniMax
WeightsNo public weights listedOpen weights
ReleasedApril 30, 2026February 12, 2026
Context window1M205K
Input $/Mtok$1.25$0.27
Output $/Mtok$2.50$0.95
Coding index22.559.4
Independent measurements behind it12
Cost per solved task$0.31$0.62
SourceOpenRouter listingOpenRouter listing

Questions

Is Grok 4.3 better than MiniMax M2.5 for coding?

Pick MiniMax M2.5 for coding: it scores 59.4 on the Vibe Coding Index against 22.5 for Grok 4.3. Pick Grok 4.3 when a solved task costs $0.31 against $0.62, or when the context window is larger, 1M against 205K tokens.

Which is cheaper, Grok 4.3 or MiniMax M2.5?

Grok 4.3 costs $1.25 per million input tokens and $2.50 per million output tokens; MiniMax M2.5 costs $0.27 and $0.95. Per solved SWE-bench Verified task, Grok 4.3 costs $0.31 and MiniMax M2.5 $0.62.

Which has the bigger context window, Grok 4.3 or MiniMax M2.5?

Grok 4.3, with 1M tokens against 205K.

How many benchmarks is the Grok 4.3 vs MiniMax M2.5 comparison based on?

57 benchmarks have a result for both models as of October 21, 2026. Grok 4.3's coding index rests on 1 independent benchmark and MiniMax M2.5's on 2. Where only one model has a result, the page says so instead of naming a winner.

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