GPT-5.1 vs MiniMax M2.5

GPT-5.1 leads MiniMax M2.5 on coding, 40.4 to 37.2 on the Vibe Coding Index, and MiniMax M2.5 costs 8.3x less per output token ($1.20 vs $10.00 per million). Updated October 22, 2026; 64 benchmarks have a result for both.

Replace GPT-5.1 Replace MiniMax M2.5

GPT-5.1OpenAI

Coding: 40.4
Overall: 55.0
Output $/M: $10.00

MiniMax M2.5MiniMax

Coding: 37.2
Overall: 37.3
Output $/M: $1.20

vs boards won of 64 shared

GPT-5.1 or MiniMax M2.5: which to pick

Pick GPT-5.1 for coding: it scores 40.4 on the Vibe Coding Index against 37.2 for MiniMax M2.5.

Pick MiniMax M2.5 for output tokens 8.3x cheaper ($1.20 vs $10.00 per million) and a lower cost per solved task ($0.62 against $1.02).

Model AGPT-5.1OpenAI40.4/1003 independent benchmarks$1.02 per solved task Model BMiniMax M2.5MiniMax37.2/1003 independent benchmarks$0.62 per solved task

64374

Shared results: 64
GPT-5.1 only: 37
MiniMax M2.5 only: 4
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.

Coding
Vibe Coding Index, six public coding benchmarks
GPT-5.1
GPT-5.1 scores 40.4 against 37.2.
3 benchmarks behind each score
Intelligence
AA Intelligence Index
GPT-5.1
GPT-5.1 leads, 24.7 against 22.8.
Same board, both measured
Reasoning
GPQA Diamond
GPT-5.1
GPT-5.1 leads, 86.6% against 82.1%.
Same board, both measured
Math
AIME
GPT-5.1
GPT-5.1 leads, 93.3% against 88.8%.
Same board, both measured
Knowledge
MMLU Pro
GPT-5.1
GPT-5.1 leads, 86.4% against 80.1%.
Same board, both measured
Web design
Design Arena: websites
MiniMax M2.5
MiniMax M2.5 leads, 1222 against 1187.
Same board, both measured
Long documents
Listed context window
GPT-5.1
GPT-5.1 takes 400K tokens against 205K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
MiniMax M2.5
GPT-5.1 $0.0063, MiniMax M2.5 $0.0009 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
MiniMax M2.5
GPT-5.1 $1.02, MiniMax M2.5 $0.62.
Published attempt cost and pass rate

At a glance

Coding index: GPT-5.1 40.4 from 3 benchmarks, MiniMax M2.5 37.2 from 3 benchmarks.
Widest category: General, 15.4 points apart on average over 21 shared benchmarks.
Widest single gap: LMArena Text: Japanese: GPT-5.1 1453 against MiniMax M2.5 1171, 47.0 points apart on a 0 to 100 scale.
Output price: GPT-5.1 $10.00 against MiniMax M2.5 $1.20 per million output tokens, 8.3x apart.
Context window: GPT-5.1 takes 400K 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
Category	GPT-5.1	MiniMax M2.5
Coding	7	4
Intelligence	2	0
Agentic work	1	1
Reasoning	8	0
Math	3	0
Knowledge	10	0
Web design	2	5
General	21	0
All shared boards	54	10

CodingLike-for-likeSix of these boards feed the Vibe Coding Index74

Coding benchmarks for GPT-5.1 and MiniMax M2.5
Benchmark	GPT-5.1	MiniMax M2.5	Leader
SWE-bench Verified	66.0%	75.8%	MiniMax M2.5
SWE-bench Multilingual	Not measured	68.3%	Only MiniMax M2.5 measured
LMArena WebDev	1396	1386	GPT-5.1
AA Coding Index	49.4	Not measured	Only GPT-5.1 measured
LiveCodeBench (Vals AI)	86.5%	79.2%	GPT-5.1
SWE-bench Verified (Vals AI)	69.8%	74.2%	MiniMax M2.5
Vibe Code Bench (Vals AI)	24.6%	14.8%	GPT-5.1
LiveCodeBench (Artificial Analysis run)	86.8%	Not measured	Only GPT-5.1 measured
Terminal-Bench Hard (Artificial Analysis run)	45.5%	34.8%	GPT-5.1
Terminal-Bench	47.6%	42.7%	GPT-5.1
GSO-Bench	13.7%	Not measured	Only GPT-5.1 measured
WeirdML	60.8%	Not measured	Only GPT-5.1 measured
ALE-Bench	Not measured	618.2	Only MiniMax M2.5 measured
LMArena Text: coding	1453	1380	GPT-5.1
LMArena Text: software and IT	1454	1383	GPT-5.1
LMArena WebDev: React	1307	1374	MiniMax M2.5
LMArena WebDev: HTML	1405	1414	MiniMax M2.5
LMArena WebDev: from an image	1421	Not measured	Only GPT-5.1 measured
Neither model has a result on the other 21 boards here

IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20

Intelligence benchmarks for GPT-5.1 and MiniMax M2.5
Benchmark	GPT-5.1	MiniMax M2.5	Leader
AA Intelligence Index	24.7	22.8	GPT-5.1
Epoch Capabilities Index	149.8	146.6	GPT-5.1

Agentic workLike-for-likePublic boards, shown as published, kept out of the index11

Agentic work benchmarks for GPT-5.1 and MiniMax M2.5
Benchmark	GPT-5.1	MiniMax M2.5	Leader
τ²-Bench Telecom	81.9%	95.3%	MiniMax M2.5
DeepResearch Bench	42.8%	Not measured	Only GPT-5.1 measured
Vending-Bench 2	$1,473	-$23	GPT-5.1
Neither model has a result on the other 38 boards here

ReasoningLike-for-likePublic boards, shown as published, kept out of the index80

Reasoning benchmarks for GPT-5.1 and MiniMax M2.5
Benchmark	GPT-5.1	MiniMax M2.5	Leader
GPQA Diamond	86.6%	82.1%	GPT-5.1
MMMU Pro (Vals AI)	83.2%	Not measured	Only GPT-5.1 measured
GPQA Diamond (Artificial Analysis run)	87.3%	84.8%	GPT-5.1
Humanity's Last Exam (Artificial Analysis run)	28.5%	20.5%	GPT-5.1
GPQA Diamond (Epoch AI run)	87.6%	Not measured	Only GPT-5.1 measured
ARC-AGI	72.8%	63.7%	GPT-5.1
ARC-AGI-2	17.6%	4.9%	GPT-5.1
SimpleBench	53.2%	Not measured	Only GPT-5.1 measured
Chess puzzles	42.0%	Not measured	Only GPT-5.1 measured
Mystery game puzzles	19.0%	Not measured	Only GPT-5.1 measured
VPCT	58.7%	Not measured	Only GPT-5.1 measured
LMArena Text: hard prompts	1457	1372	GPT-5.1
LMArena Text: expert	1470	1378	GPT-5.1
LMArena Text: hard prompts in English	1462	1384	GPT-5.1
LMArena Vision: diagrams	1264	Not measured	Only GPT-5.1 measured
LMArena Vision: homework	1272	Not measured	Only GPT-5.1 measured
Kagi LLM Benchmark	Not measured	55.2%	Only MiniMax M2.5 measured
Neither model has a result on the other 5 boards here

MathLike-for-likePublic boards, shown as published, kept out of the index30

Math benchmarks for GPT-5.1 and MiniMax M2.5
Benchmark	GPT-5.1	MiniMax M2.5	Leader
AIME	93.3%	88.8%	GPT-5.1
MGSM (Vals AI)	93.0%	Not measured	Only GPT-5.1 measured
AA Math Index	94.0	Not measured	Only GPT-5.1 measured
AIME 2025 (Artificial Analysis run)	94.0%	Not measured	Only GPT-5.1 measured
OTIS Mock AIME	88.6%	Not measured	Only GPT-5.1 measured
ProofBench	Not measured	4.0%	Only MiniMax M2.5 measured
LMArena Text: math	1446	1378	GPT-5.1
LMArena Text: mathematical work	1449	1378	GPT-5.1
Neither model has a result on the other 5 boards here

KnowledgeLike-for-likePublic boards, shown as published, kept out of the index100

Knowledge benchmarks for GPT-5.1 and MiniMax M2.5
Benchmark	GPT-5.1	MiniMax M2.5	Leader
MMLU Pro	86.4%	80.1%	GPT-5.1
LegalBench (Vals AI)	85.7%	80.0%	GPT-5.1
CaseLaw (Vals AI)	73.4%	53.5%	GPT-5.1
CorpFin (Vals AI)	63.8%	59.6%	GPT-5.1
TaxEval (Vals AI)	74.9%	68.2%	GPT-5.1
MortgageTax (Vals AI)	61.4%	Not measured	Only GPT-5.1 measured
MedQA (Vals AI)	96.4%	92.5%	GPT-5.1
MedCode (Vals AI)	52.7%	Not measured	Only GPT-5.1 measured
MMLU Pro (Artificial Analysis run)	87.0%	Not measured	Only GPT-5.1 measured
SimpleQA Verified	48.0%	Not measured	Only GPT-5.1 measured
LMArena Text: science	1459	1369	GPT-5.1
LMArena Text: medicine and healthcare	1456	1357	GPT-5.1
LMArena Text: legal and government	1459	1366	GPT-5.1
LMArena Text: business and finance	1431	1356	GPT-5.1
FACTS Benchmark Suite	45.0%	Not measured	Only GPT-5.1 measured
Neither model has a result on the other 3 boards here

Web designLike-for-likePublic boards, shown as published, kept out of the index25

Web design benchmarks for GPT-5.1 and MiniMax M2.5
Benchmark	GPT-5.1	MiniMax M2.5	Leader
Design Arena: websites	1187	1222	MiniMax M2.5
Design Arena: UI components	1164	1170	MiniMax M2.5
Design Arena: game dev	1178	1176	GPT-5.1
Design Arena: data viz	1205	1172	GPT-5.1
Design Arena: 3D	1060	1170	MiniMax M2.5
Design Arena: all code categories	1170	1207	MiniMax M2.5
Design Arena: SVG	1148	1150	MiniMax M2.5
Design Arena: ASCII art	1118	Not measured	Only GPT-5.1 measured
Neither model has a result on the other 1 board here

GeneralLike-for-likePublic boards, shown as published, kept out of the index210

General benchmarks for GPT-5.1 and MiniMax M2.5
Benchmark	GPT-5.1	MiniMax M2.5	Leader
SAGE (Vals AI)	43.2%	Not measured	Only GPT-5.1 measured
MedScribe (Vals AI)	88.1%	Not measured	Only GPT-5.1 measured
IFBench	72.9%	71.6%	GPT-5.1
Long context reasoning (AA-LCR)	80.0%	73.3%	GPT-5.1
DTBench	90.1%	Not measured	Only GPT-5.1 measured
LMCA	43.9%	Not measured	Only GPT-5.1 measured
CL-bench	23.7%	11.4%	GPT-5.1
CL-bench Life	17.3%	6.3%	GPT-5.1
LMArena Text	1443	1359	GPT-5.1
LMArena Text: instruction following	1443	1353	GPT-5.1
LMArena Text: creative writing	1427	1331	GPT-5.1
LMArena Vision	1250	Not measured	Only GPT-5.1 measured
LMArena Text: English	1451	1380	GPT-5.1
LMArena Text: non-English	1431	1338	GPT-5.1
LMArena Text: Chinese	1495	1393	GPT-5.1
LMArena Text: German	1438	1361	GPT-5.1
LMArena Text: Japanese	1453	1171	GPT-5.1
LMArena Text: Korean	1401	1233	GPT-5.1
LMArena Text: French	1450	1363	GPT-5.1
LMArena Text: Spanish	1433	1353	GPT-5.1
LMArena Text: Russian	1435	1359	GPT-5.1
LMArena Text: Polish	1440	1334	GPT-5.1
LMArena Text: multi-turn	1450	1364	GPT-5.1
LMArena Text: longer queries	1448	1366	GPT-5.1
LMArena Text: writing and language	1428	1345	GPT-5.1
LMArena Text: entertainment and media	1415	1329	GPT-5.1
LMArena Vision: English	1252	Not measured	Only GPT-5.1 measured
LMArena Vision: Chinese	1270	Not measured	Only GPT-5.1 measured
LMArena Vision: reading text	1255	Not measured	Only GPT-5.1 measured
LMArena Vision: humor	1263	Not measured	Only GPT-5.1 measured
LMArena Vision: captioning	1252	Not measured	Only GPT-5.1 measured
LMArena Vision: recognizing things	1232	Not measured	Only GPT-5.1 measured
LMArena Vision: creative writing	1266	Not measured	Only GPT-5.1 measured
LMArena Document	1403	Not measured	Only GPT-5.1 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 GPT-5.1 and MiniMax M2.5
Benchmark	GPT-5.1	MiniMax M2.5	Leader
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

GPT-5.1$0.0063Fits in one request

MiniMax M2.5$0.0009Fits in one request

MiniMax M2.5 costs less

Repository review

50K input + 3K output tokens

GPT-5.1$0.092Fits in one request

MiniMax M2.5$0.019Fits in one request

MiniMax M2.5 costs less

Agent loop

200K input + 10K output tokens

GPT-5.1$0.350Fits in one request

MiniMax M2.5$0.072Exceeds 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 GPT-5.1 and MiniMax M2.5
Specification	OpenAI GPT-5.1	MiniMax M2.5
Maker	OpenAI	MiniMax
Weights	No public weights listed	Open weights
Released	November 13, 2025	February 12, 2026
Context window	400K	205K
Input $/Mtok	$1.25	$0.30
Output $/Mtok	$10.00	$1.20
Coding index	40.4	37.2
Independent measurements behind it	3	3
Cost per solved task	$1.02	$0.62
Source	OpenRouter listing	OpenRouter listing

Questions

Is GPT-5.1 better than MiniMax M2.5 for coding?

Pick GPT-5.1 for coding: it scores 40.4 on the Vibe Coding Index against 37.2 for MiniMax M2.5. Pick MiniMax M2.5 for output tokens 8.3x cheaper ($1.20 vs $10.00 per million) and a lower cost per solved task ($0.62 against $1.02).

Which is cheaper, GPT-5.1 or MiniMax M2.5?

GPT-5.1 costs $1.25 per million input tokens and $10.00 per million output tokens; MiniMax M2.5 costs $0.30 and $1.20. Per solved SWE-bench Verified task, GPT-5.1 costs $1.02 and MiniMax M2.5 $0.62.

Which has the bigger context window, GPT-5.1 or MiniMax M2.5?

GPT-5.1, with 400K tokens against 205K.

How many benchmarks is the GPT-5.1 vs MiniMax M2.5 comparison based on?

64 benchmarks have a result for both models as of October 22, 2026. GPT-5.1's coding index rests on 3 independent benchmarks and MiniMax M2.5's on 3. Where only one model has a result, the page says so instead of naming a winner.

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GPT-5.1 or MiniMax M2.5: which to pick

Which one for your work

Coding

Intelligence

Reasoning

Math

Knowledge

Web design

Long documents

Everyday cost

Cost per solved task

At a glance

Benchmark by benchmark

What each workload costs

Chat turn

Repository review

Agent loop

Specification differences

Questions

Compare next