Gemini 3.1 Pro Preview vs MiMo-V2.6-Flash

MiMo-V2.6-Flash leads Gemini 3.1 Pro Preview on coding, 54.7 to 32.3 on the Vibe Coding Index, and MiMo-V2.6-Flash costs 42.9x less per output token ($0.28 vs $12.00 per million). Updated October 22, 2026; 63 benchmarks have a result for both.

Replace Gemini 3.1 Pro Preview Replace MiMo-V2.6-Flash

Gemini 3.1 Pro PreviewGoogle

Coding: 32.3
Overall: 54.0
Output $/M: $12.00

MiMo-V2.6-FlashXiaomi

Coding: 54.7
Overall: 60.8
Output $/M: $0.28

vs boards won of 63 shared

Gemini 3.1 Pro Preview or MiMo-V2.6-Flash: which to pick

Pick MiMo-V2.6-Flash for coding: it scores 54.7 on the Vibe Coding Index against 32.3 for Gemini 3.1 Pro Preview, though on 3 benchmarks against 4.

Pick Gemini 3.1 Pro Preview for work measured by IOI (Vals AI) or SciCode, where it leads.

Model AGemini 3.1 Pro PreviewGoogle32.3/1004 independent benchmarks$0.99 per solved task Model BMiMo-V2.6-FlashXiaomi54.7/1003 independent benchmarksNo cost per solved task

63703

Shared results: 63
Gemini 3.1 Pro Preview only: 70
MiMo-V2.6-Flash only: 3
Like-for-like categories: 7 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
MiMo-V2.6-Flash
MiMo-V2.6-Flash scores 54.7 against 32.3.
4 and 3 benchmarks behind the scores
Intelligence
AA Intelligence Index
MiMo-V2.6-Flash
MiMo-V2.6-Flash leads, 37.9 against 29.7.
Same board, both measured
Agentic work
AA Agentic Index
No call
Only Gemini 3.1 Pro Preview has a AA Agentic Index result, 8.2.
Directional only
Reasoning
GPQA Diamond
No call
Only Gemini 3.1 Pro Preview has a GPQA Diamond result, 95.5%.
Directional only
Math
AIME
No call
Only Gemini 3.1 Pro Preview has a AIME result, 98.1%.
Directional only
Knowledge
MMLU Pro
No call
Only Gemini 3.1 Pro Preview has a MMLU Pro result, 91.0%.
Directional only
Web design
Design Arena: websites
No call
Only Gemini 3.1 Pro Preview has a Design Arena: websites result, 1233.
Directional only
General
Vals Index
No call
Only MiMo-V2.6-Flash has a Vals Index result, 54.8%.
Directional only
Long documents
Listed context window
MiMo-V2.6-Flash
MiMo-V2.6-Flash takes 1.05M tokens against 1.05M.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
MiMo-V2.6-Flash
Gemini 3.1 Pro Preview $0.0080, MiMo-V2.6-Flash $0.0003 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
No call
Only Gemini 3.1 Pro Preview has the number, $0.99.
Directional only

At a glance

Coding index: Gemini 3.1 Pro Preview 32.3 from 4 benchmarks, MiMo-V2.6-Flash 54.7 from 3 benchmarks.
Widest category: Coding, 15.4 points apart on average over 14 shared benchmarks.
Widest single gap: Vibe Code Bench (Vals AI): Gemini 3.1 Pro Preview 32.0% against MiMo-V2.6-Flash 79.0%, 46.9 points apart on a 0 to 100 scale.
Output price: Gemini 3.1 Pro Preview $12.00 against MiMo-V2.6-Flash $0.28 per million output tokens, 42.9x apart.
Context window: Gemini 3.1 Pro Preview takes 1.05M tokens, MiMo-V2.6-Flash 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
Category	Gemini 3.1 Pro Preview	MiMo-V2.6-Flash
Coding	2	12
Intelligence	0	1
Agentic work	0	8
Reasoning	4	3
Math	1	2
Knowledge	5	0
General	23	2
All shared boards	35	28

CodingLike-for-likeSix of these boards feed the Vibe Coding Index212

Coding benchmarks for Gemini 3.1 Pro Preview and MiMo-V2.6-Flash
Benchmark	Gemini 3.1 Pro Preview	MiMo-V2.6-Flash	Leader
LMArena WebDev	1447	1634	MiMo-V2.6-Flash
AA Coding Index	68.8	Not measured	Only Gemini 3.1 Pro Preview measured
LiveCodeBench (Vals AI)	88.5%	Not measured	Only Gemini 3.1 Pro Preview measured
SWE-bench Verified (Vals AI)	78.8%	Not measured	Only Gemini 3.1 Pro Preview measured
Terminal-Bench 4 (Vals AI)	2.5%	24.2%	MiMo-V2.6-Flash
Vibe Code Bench (Vals AI)	32.0%	79.0%	MiMo-V2.6-Flash
Code migration (Vals AI)	17.3%	40.9%	MiMo-V2.6-Flash
ProgramBench (Vals AI)	0.0%	0.5%	MiMo-V2.6-Flash
IOI (Vals AI)	51.8%	47.7%	Gemini 3.1 Pro Preview
Terminal-Bench 2.1 (Vals AI)	70.8%	76.4%	MiMo-V2.6-Flash
Vibe Code Bench 1-100 (Vals AI)	6.7%	Not measured	Only Gemini 3.1 Pro Preview measured
CyberBench (Vals AI)	Not measured	75.4%	Only MiMo-V2.6-Flash measured
SciCode	58.7%	51.3%	Gemini 3.1 Pro Preview
Terminal-Bench Hard (Artificial Analysis run)	53.8%	Not measured	Only Gemini 3.1 Pro Preview measured
Terminal-Bench	80.2%	Not measured	Only Gemini 3.1 Pro Preview measured
GSO-Bench	22.6%	Not measured	Only Gemini 3.1 Pro Preview measured
WeirdML	72.1%	Not measured	Only Gemini 3.1 Pro Preview measured
MirrorCode	8.9%	Not measured	Only Gemini 3.1 Pro Preview measured
ALE-Bench	1160.6	1244.2	MiMo-V2.6-Flash
LMArena Text: coding	1484	1499	MiMo-V2.6-Flash
LMArena Text: software and IT	1487	1497	MiMo-V2.6-Flash
LMArena WebDev: React	1438	1648	MiMo-V2.6-Flash
LMArena WebDev: HTML	1490	1641	MiMo-V2.6-Flash
LMArena WebDev: from an image	1481	1596	MiMo-V2.6-Flash
SciCode	14.3%	Not measured	Only Gemini 3.1 Pro Preview measured
Neither model has a result on the other 14 boards here

IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01

Intelligence benchmarks for Gemini 3.1 Pro Preview and MiMo-V2.6-Flash
Benchmark	Gemini 3.1 Pro Preview	MiMo-V2.6-Flash	Leader
AA Intelligence Index	29.7	37.9	MiMo-V2.6-Flash
Neither model has a result on the other 1 board here

Agentic workLike-for-likePublic boards, shown as published, kept out of the index08

Agentic work benchmarks for Gemini 3.1 Pro Preview and MiMo-V2.6-Flash
Benchmark	Gemini 3.1 Pro Preview	MiMo-V2.6-Flash	Leader
AA Agentic Index	8.2	Not measured	Only Gemini 3.1 Pro Preview measured
Design Arena: agents building web apps	1125	Not measured	Only Gemini 3.1 Pro Preview measured
Design Arena: agents building full-stack apps	1068	Not measured	Only Gemini 3.1 Pro Preview measured
Design Arena: agents building mobile apps	1094	Not measured	Only Gemini 3.1 Pro Preview measured
Design Arena: agents building Android apps	1049	Not measured	Only Gemini 3.1 Pro Preview measured
Design Arena: agents building Godot games	1236	Not measured	Only Gemini 3.1 Pro Preview measured
Design Arena: agents building games	1113	Not measured	Only Gemini 3.1 Pro Preview measured
Design Arena: HTML slides	1103	Not measured	Only Gemini 3.1 Pro Preview measured
Design Arena: PowerPoint slides	1041	Not measured	Only Gemini 3.1 Pro Preview measured
SREBench (Vals AI)	0.0%	4.2%	MiMo-V2.6-Flash
Finance Agent (Vals AI)	43.0%	56.3%	MiMo-V2.6-Flash
Tax Agent Bench (Vals AI)	9.3%	28.5%	MiMo-V2.6-Flash
Legal Research Bench (Vals AI)	20.7%	38.0%	MiMo-V2.6-Flash
Harvey's Legal Agent Benchmark (Vals AI)	Not measured	13.3%	Only MiMo-V2.6-Flash measured
Excel Modeling Benchmark (Vals AI)	52.6%	65.5%	MiMo-V2.6-Flash
BioMysteryBench (Vals AI)	60.0%	69.3%	MiMo-V2.6-Flash
Terminal-Bench-Science (Vals AI)	1.4%	4.3%	MiMo-V2.6-Flash
Vals Science Index	27.4%	31.7%	MiMo-V2.6-Flash
τ²-Bench Telecom	95.6%	Not measured	Only Gemini 3.1 Pro Preview measured
APEX-Agents	35.1%	Not measured	Only Gemini 3.1 Pro Preview measured
METR time horizons	77.0%	Not measured	Only Gemini 3.1 Pro Preview measured
BALROG	57.0%	Not measured	Only Gemini 3.1 Pro Preview measured
DeepResearch Bench	47.8%	Not measured	Only Gemini 3.1 Pro Preview measured
PostTrainBench	22.0%	Not measured	Only Gemini 3.1 Pro Preview measured
Vending-Bench 2	$911	Not measured	Only Gemini 3.1 Pro Preview measured
Neither model has a result on the other 16 boards here

ReasoningLike-for-likePublic boards, shown as published, kept out of the index43

Reasoning benchmarks for Gemini 3.1 Pro Preview and MiMo-V2.6-Flash
Benchmark	Gemini 3.1 Pro Preview	MiMo-V2.6-Flash	Leader
GPQA Diamond	95.5%	Not measured	Only Gemini 3.1 Pro Preview measured
MysteryMechanism (Vals AI)	20.7%	21.6%	MiMo-V2.6-Flash
MMMU Pro (Vals AI)	88.2%	Not measured	Only Gemini 3.1 Pro Preview measured
GPQA Diamond (Artificial Analysis run)	94.1%	Not measured	Only Gemini 3.1 Pro Preview measured
Humanity's Last Exam (Artificial Analysis run)	47.0%	35.1%	Gemini 3.1 Pro Preview
GPQA Diamond (Epoch AI run)	94.4%	Not measured	Only Gemini 3.1 Pro Preview measured
ARC-AGI	98.0%	Not measured	Only Gemini 3.1 Pro Preview measured
ARC-AGI-2	77.1%	Not measured	Only Gemini 3.1 Pro Preview measured
SimpleBench	79.6%	Not measured	Only Gemini 3.1 Pro Preview measured
Chess puzzles	51.0%	Not measured	Only Gemini 3.1 Pro Preview measured
Mystery game puzzles	34.0%	Not measured	Only Gemini 3.1 Pro Preview measured
EBR-bench	14.3%	Not measured	Only Gemini 3.1 Pro Preview measured
LMArena Text: hard prompts	1485	1475	Gemini 3.1 Pro Preview
LMArena Text: expert	1483	1496	MiMo-V2.6-Flash
LMArena Text: hard prompts in English	1480	1493	MiMo-V2.6-Flash
LMArena Vision: diagrams	1311	1276	Gemini 3.1 Pro Preview
LMArena Vision: homework	1316	1283	Gemini 3.1 Pro Preview
Neither model has a result on the other 5 boards here

MathLike-for-likePublic boards, shown as published, kept out of the index12

Math benchmarks for Gemini 3.1 Pro Preview and MiMo-V2.6-Flash
Benchmark	Gemini 3.1 Pro Preview	MiMo-V2.6-Flash	Leader
AIME	98.1%	Not measured	Only Gemini 3.1 Pro Preview measured
OTIS Mock AIME	95.6%	Not measured	Only Gemini 3.1 Pro Preview measured
FrontierMath, tiers 1 to 3	59.6%	Not measured	Only Gemini 3.1 Pro Preview measured
FrontierMath, tier 4	26.8%	Not measured	Only Gemini 3.1 Pro Preview measured
ProofBench	26.0%	63.0%	MiMo-V2.6-Flash
LMArena Text: math	1486	1476	Gemini 3.1 Pro Preview
LMArena Text: mathematical work	1478	1478	MiMo-V2.6-Flash
Neither model has a result on the other 6 boards here

KnowledgeLike-for-likePublic boards, shown as published, kept out of the index50

Knowledge benchmarks for Gemini 3.1 Pro Preview and MiMo-V2.6-Flash
Benchmark	Gemini 3.1 Pro Preview	MiMo-V2.6-Flash	Leader
MMLU Pro	91.0%	Not measured	Only Gemini 3.1 Pro Preview measured
LegalBench (Vals AI)	87.4%	Not measured	Only Gemini 3.1 Pro Preview measured
CaseLaw (Vals AI)	64.8%	Not measured	Only Gemini 3.1 Pro Preview measured
CorpFin (Vals AI)	64.5%	Not measured	Only Gemini 3.1 Pro Preview measured
TaxEval (Vals AI)	72.9%	Not measured	Only Gemini 3.1 Pro Preview measured
MortgageTax (Vals AI)	69.4%	Not measured	Only Gemini 3.1 Pro Preview measured
MedQA (Vals AI)	96.4%	Not measured	Only Gemini 3.1 Pro Preview measured
MedCode (Vals AI)	59.1%	41.1%	Gemini 3.1 Pro Preview
SimpleQA Verified	73.5%	Not measured	Only Gemini 3.1 Pro Preview measured
LMArena Text: science	1497	1462	Gemini 3.1 Pro Preview
LMArena Text: medicine and healthcare	1486	1439	Gemini 3.1 Pro Preview
LMArena Text: legal and government	1487	1441	Gemini 3.1 Pro Preview
LMArena Text: business and finance	1459	1454	Gemini 3.1 Pro Preview
FACTS Benchmark Suite	67.4%	Not measured	Only Gemini 3.1 Pro Preview measured
Neither model has a result on the other 4 boards here

Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared

Web design benchmarks for Gemini 3.1 Pro Preview and MiMo-V2.6-Flash
Benchmark	Gemini 3.1 Pro Preview	MiMo-V2.6-Flash	Leader
Design Arena: websites	1233	Not measured	Only Gemini 3.1 Pro Preview measured
Design Arena: UI components	1224	Not measured	Only Gemini 3.1 Pro Preview measured
Design Arena: game dev	1202	Not measured	Only Gemini 3.1 Pro Preview measured
Design Arena: data viz	1209	Not measured	Only Gemini 3.1 Pro Preview measured
Design Arena: 3D	1234	Not measured	Only Gemini 3.1 Pro Preview measured
Design Arena: all code categories	1231	Not measured	Only Gemini 3.1 Pro Preview measured
Design Arena: SVG	1285	Not measured	Only Gemini 3.1 Pro Preview measured
Design Arena: ASCII art	1270	Not measured	Only Gemini 3.1 Pro Preview measured
Neither model has a result on the other 1 board here

GeneralLike-for-likePublic boards, shown as published, kept out of the index232

General benchmarks for Gemini 3.1 Pro Preview and MiMo-V2.6-Flash
Benchmark	Gemini 3.1 Pro Preview	MiMo-V2.6-Flash	Leader
Vals Index	Not measured	54.8%	Only MiMo-V2.6-Flash measured
Public Benefits Bench (Vals AI)	53.8%	67.6%	MiMo-V2.6-Flash
SAGE (Vals AI)	48.7%	43.5%	Gemini 3.1 Pro Preview
MedScribe (Vals AI)	76.1%	85.3%	MiMo-V2.6-Flash
Vals Multimodal Index	56.1%	Not measured	Only Gemini 3.1 Pro Preview measured
IFBench	77.1%	Not measured	Only Gemini 3.1 Pro Preview measured
Long context reasoning (AA-LCR)	82.0%	74.3%	Gemini 3.1 Pro Preview
DTBench	97.1%	Not measured	Only Gemini 3.1 Pro Preview measured
LMCA	53.8%	Not measured	Only Gemini 3.1 Pro Preview measured
CL-bench	20.8%	Not measured	Only Gemini 3.1 Pro Preview measured
Furniture assembly	26.7%	Not measured	Only Gemini 3.1 Pro Preview measured
ExploitBench	26.1%	Not measured	Only Gemini 3.1 Pro Preview measured
CL-bench Life	16.9%	Not measured	Only Gemini 3.1 Pro Preview measured
LMArena Text	1480	1453	Gemini 3.1 Pro Preview
LMArena Text: instruction following	1466	1452	Gemini 3.1 Pro Preview
LMArena Text: creative writing	1482	1403	Gemini 3.1 Pro Preview
LMArena Vision	1296	1256	Gemini 3.1 Pro Preview
LMArena Text: English	1478	1476	Gemini 3.1 Pro Preview
LMArena Text: non-English	1476	1431	Gemini 3.1 Pro Preview
LMArena Text: Chinese	1527	1509	Gemini 3.1 Pro Preview
LMArena Text: German	1490	1458	Gemini 3.1 Pro Preview
LMArena Text: Japanese	1491	1359	Gemini 3.1 Pro Preview
LMArena Text: Korean	1455	1425	Gemini 3.1 Pro Preview
LMArena Text: French	1487	1480	Gemini 3.1 Pro Preview
LMArena Text: Spanish	1481	1453	Gemini 3.1 Pro Preview
LMArena Text: Russian	1497	1409	Gemini 3.1 Pro Preview
LMArena Text: Polish	1498	1455	Gemini 3.1 Pro Preview
LMArena Text: multi-turn	1487	1447	Gemini 3.1 Pro Preview
LMArena Text: longer queries	1482	1459	Gemini 3.1 Pro Preview
LMArena Text: writing and language	1481	1424	Gemini 3.1 Pro Preview
LMArena Text: entertainment and media	1465	1415	Gemini 3.1 Pro Preview
LMArena Vision: English	1287	1269	Gemini 3.1 Pro Preview
LMArena Vision: Chinese	1364	Not measured	Only Gemini 3.1 Pro Preview measured
LMArena Vision: reading text	1304	1270	Gemini 3.1 Pro Preview
LMArena Vision: humor	1322	Not measured	Only Gemini 3.1 Pro Preview measured
LMArena Vision: captioning	1345	Not measured	Only Gemini 3.1 Pro Preview measured
LMArena Vision: recognizing things	1330	Not measured	Only Gemini 3.1 Pro Preview measured
LMArena Vision: creative writing	1324	1231	Gemini 3.1 Pro Preview
LMArena Document	1444	Not measured	Only Gemini 3.1 Pro Preview measured
Neither model has a result on the other 7 boards here

Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared

Image generation benchmarks for Gemini 3.1 Pro Preview and MiMo-V2.6-Flash
Benchmark	Gemini 3.1 Pro Preview	MiMo-V2.6-Flash	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

Gemini 3.1 Pro Preview$0.0080Fits in one request

MiMo-V2.6-Flash$0.0003Fits in one request

MiMo-V2.6-Flash costs less

Repository review

50K input + 3K output tokens

Gemini 3.1 Pro Preview$0.136Fits in one request

MiMo-V2.6-Flash$0.0078Fits in one request

MiMo-V2.6-Flash costs less

Agent loop

200K input + 10K output tokens

Gemini 3.1 Pro Preview$0.520Fits in one request

MiMo-V2.6-Flash$0.031Fits in one request

MiMo-V2.6-Flash 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 Gemini 3.1 Pro Preview and MiMo-V2.6-Flash
Specification	Google Gemini 3.1 Pro Preview	Xiaomi MiMo-V2.6-Flash
Maker	Google	Xiaomi
Weights	No public weights listed	Open weights
Released	February 19, 2026	September 21, 2026
Context window	1.05M	1.05M
Input $/Mtok	$2.00	$0.14
Output $/Mtok	$12.00	$0.28
Coding index	32.3	54.7
Independent measurements behind it	4	3
Cost per solved task	$0.99	Not computable
Source	OpenRouter listing	OpenRouter listing

Questions

Is Gemini 3.1 Pro Preview better than MiMo-V2.6-Flash for coding?

Pick MiMo-V2.6-Flash for coding: it scores 54.7 on the Vibe Coding Index against 32.3 for Gemini 3.1 Pro Preview, though on 3 benchmarks against 4. Pick Gemini 3.1 Pro Preview for work measured by IOI (Vals AI) or SciCode, where it leads.

Which is cheaper, Gemini 3.1 Pro Preview or MiMo-V2.6-Flash?

Gemini 3.1 Pro Preview costs $2.00 per million input tokens and $12.00 per million output tokens; MiMo-V2.6-Flash costs $0.14 and $0.28. Cost per solved task is known for Gemini 3.1 Pro Preview only.

Which has the bigger context window, Gemini 3.1 Pro Preview or MiMo-V2.6-Flash?

MiMo-V2.6-Flash, with 1.05M tokens against 1.05M.

How many benchmarks is the Gemini 3.1 Pro Preview vs MiMo-V2.6-Flash comparison based on?

63 benchmarks have a result for both models as of October 22, 2026. Gemini 3.1 Pro Preview's coding index rests on 4 independent benchmarks and MiMo-V2.6-Flash's on 3. Where only one model has a result, the page says so instead of naming a winner.

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Gemini 3.1 Pro Preview or MiMo-V2.6-Flash: which to pick

Which one for your work

Coding

Intelligence

Agentic work

Reasoning

Math

Knowledge

Web design

General

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