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Gemma 4 26B A4B vs MiMo-V2.5

Updated October 21, 2026. 47 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace Gemma 4 26B A4B Replace MiMo-V2.5
Gemma 4 26B A4BGoogle
Coding
22.8
Overall
16.7
Output $/M
$0.255
20
MiMo-V2.5Xiaomi
Coding
34.0
Overall
21.8
Output $/M
$0.238
27
vs boards won of 47 shared

Decision reading

Pick MiMo-V2.5 for coding: it scores 34.0 on the Vibe Coding Index against 22.8 for Gemma 4 26B A4B.

Pick Gemma 4 26B A4B when what matters is ALE-Bench or LMArena Vision: homework, where it leads.

Model AGemma 4 26B A4BGoogle22.8/1001 independent benchmarkNo cost per solved taskModel BMiMo-V2.5Xiaomi34.0/1001 independent benchmark$0.01 per solved task
Shared results
47
Gemma 4 26B A4B only
7
MiMo-V2.5 only
33
Like-for-like categories
7 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
Gemma 4 26B A4B 22.8 from 1 benchmark, MiMo-V2.5 34.0 from 1 benchmark.
Widest category
Agentic work, 30.0 points apart on average over 2 shared benchmarks.
Widest single gap
τ²-Bench Telecom: Gemma 4 26B A4B 43.6% against MiMo-V2.5 90.6%, 47.1 points apart on a 0 to 100 scale.
Output price
Gemma 4 26B A4B $0.255 against MiMo-V2.5 $0.238 per million output tokens, 1.1x apart.
Context window
Gemma 4 26B A4B takes 262K tokens, MiMo-V2.5 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
CategoryGemma 4 26B A4BBarsMiMo-V2.5Ties
Coding18
Intelligence01
Agentic work02
Reasoning16
Math20
Knowledge22
General148
All shared boards2027
CodingLike-for-likeFour of these boards feed the Vibe Coding Index18
Coding benchmarks for Gemma 4 26B A4B and MiMo-V2.5
BenchmarkGemma 4 26B A4BMiMo-V2.5Leader
LMArena WebDev13601438MiMo-V2.5
AA Coding Index39.356.8MiMo-V2.5
LiveCodeBench (Vals AI)Not measured81.5%Only MiMo-V2.5 measured
SWE-bench Verified (Vals AI)Not measured71.0%Only MiMo-V2.5 measured
Vibe Code Bench (Vals AI)Not measured42.2%Only MiMo-V2.5 measured
Code migration (Vals AI)Not measured14.2%Only MiMo-V2.5 measured
Terminal-Bench 2.1 (Vals AI)Not measured60.7%Only MiMo-V2.5 measured
SciCode40.0%43.9%MiMo-V2.5
Terminal-Bench Hard (Artificial Analysis run)25.0%41.7%MiMo-V2.5
WeirdML35.2%Not measuredOnly Gemma 4 26B A4B measured
ALE-Bench927.2514.0Gemma 4 26B A4B
LMArena Text: coding14461469MiMo-V2.5
LMArena Text: software and IT14541463MiMo-V2.5
LMArena WebDev: React13511425MiMo-V2.5
LMArena WebDev: HTML13621429MiMo-V2.5
Neither model has a result on the other 23 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
Intelligence benchmarks for Gemma 4 26B A4B and MiMo-V2.5
BenchmarkGemma 4 26B A4BMiMo-V2.5Leader
AA Intelligence Index16.721.8MiMo-V2.5
Epoch Capabilities Index141.9Not measuredOnly Gemma 4 26B A4B measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index02
Agentic work benchmarks for Gemma 4 26B A4B and MiMo-V2.5
BenchmarkGemma 4 26B A4BMiMo-V2.5Leader
AA Agentic Index2.915.8MiMo-V2.5
Finance Agent (Vals AI)Not measured36.7%Only MiMo-V2.5 measured
Tax Agent Bench (Vals AI)Not measured7.8%Only MiMo-V2.5 measured
Legal Research Bench (Vals AI)Not measured9.1%Only MiMo-V2.5 measured
Excel Modeling Benchmark (Vals AI)Not measured55.1%Only MiMo-V2.5 measured
τ²-Bench Telecom43.6%90.6%MiMo-V2.5
Neither model has a result on the other 33 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index16
Reasoning benchmarks for Gemma 4 26B A4B and MiMo-V2.5
BenchmarkGemma 4 26B A4BMiMo-V2.5Leader
GPQA DiamondNot measured81.6%Only MiMo-V2.5 measured
MMMU Pro (Vals AI)Not measured80.0%Only MiMo-V2.5 measured
GPQA Diamond (Artificial Analysis run)79.2%84.9%MiMo-V2.5
Humanity's Last Exam (Artificial Analysis run)19.3%27.2%MiMo-V2.5
GPQA Diamond (Epoch AI run)73.2%Not measuredOnly Gemma 4 26B A4B measured
LMArena Text: hard prompts14381450MiMo-V2.5
LMArena Text: expert14471459MiMo-V2.5
LMArena Text: hard prompts in English14481461MiMo-V2.5
LMArena Vision: diagrams12641269MiMo-V2.5
LMArena Vision: homework12931262Gemma 4 26B A4B
Neither model has a result on the other 11 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index20
Math benchmarks for Gemma 4 26B A4B and MiMo-V2.5
BenchmarkGemma 4 26B A4BMiMo-V2.5Leader
OTIS Mock AIME82.2%Not measuredOnly Gemma 4 26B A4B measured
ProofBenchNot measured16.0%Only MiMo-V2.5 measured
LMArena Text: math14701436Gemma 4 26B A4B
LMArena Text: mathematical work14751451Gemma 4 26B A4B
Neither model has a result on the other 9 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index22
Knowledge benchmarks for Gemma 4 26B A4B and MiMo-V2.5
BenchmarkGemma 4 26B A4BMiMo-V2.5Leader
MMLU ProNot measured82.9%Only MiMo-V2.5 measured
LegalBench (Vals AI)Not measured78.9%Only MiMo-V2.5 measured
CorpFin (Vals AI)Not measured59.9%Only MiMo-V2.5 measured
TaxEval (Vals AI)Not measured71.8%Only MiMo-V2.5 measured
MortgageTax (Vals AI)Not measured59.3%Only MiMo-V2.5 measured
MedCode (Vals AI)Not measured31.9%Only MiMo-V2.5 measured
LMArena Text: science14461440Gemma 4 26B A4B
LMArena Text: medicine and healthcare14281432MiMo-V2.5
LMArena Text: legal and government14571425Gemma 4 26B A4B
LMArena Text: business and finance14291432MiMo-V2.5
Neither model has a result on the other 7 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
Web design benchmarks for Gemma 4 26B A4B and MiMo-V2.5
BenchmarkGemma 4 26B A4BMiMo-V2.5Leader
Design Arena: websitesNot measured1266Only MiMo-V2.5 measured
Design Arena: UI componentsNot measured1257Only MiMo-V2.5 measured
Design Arena: game devNot measured1249Only MiMo-V2.5 measured
Design Arena: data vizNot measured1249Only MiMo-V2.5 measured
Design Arena: 3DNot measured1216Only MiMo-V2.5 measured
Design Arena: all code categoriesNot measured1260Only MiMo-V2.5 measured
Design Arena: SVGNot measured1178Only MiMo-V2.5 measured
Design Arena: ASCII artNot measured1141Only MiMo-V2.5 measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index148
General benchmarks for Gemma 4 26B A4B and MiMo-V2.5
BenchmarkGemma 4 26B A4BMiMo-V2.5Leader
SAGE (Vals AI)Not measured43.3%Only MiMo-V2.5 measured
MedScribe (Vals AI)Not measured72.2%Only MiMo-V2.5 measured
Vals Multimodal IndexNot measured52.8%Only MiMo-V2.5 measured
IFBench72.4%67.1%Gemma 4 26B A4B
Long context reasoning (AA-LCR)65.7%73.0%MiMo-V2.5
DTBench74.9%Not measuredOnly Gemma 4 26B A4B measured
LMCA29.7%Not measuredOnly Gemma 4 26B A4B measured
LMArena Text14341428Gemma 4 26B A4B
LMArena Text: instruction following14201435MiMo-V2.5
LMArena Text: creative writing14001393Gemma 4 26B A4B
LMArena Vision12601247Gemma 4 26B A4B
LMArena Text: English14441447MiMo-V2.5
LMArena Text: non-English14211405Gemma 4 26B A4B
LMArena Text: Chinese14951469Gemma 4 26B A4B
LMArena Text: GermanNot measured1421Only MiMo-V2.5 measured
LMArena Text: JapaneseNot measured1306Only MiMo-V2.5 measured
LMArena Text: KoreanNot measured1361Only MiMo-V2.5 measured
LMArena Text: French14601448Gemma 4 26B A4B
LMArena Text: Spanish14151414Gemma 4 26B A4B
LMArena Text: Russian14341396Gemma 4 26B A4B
LMArena Text: PolishNot measured1413Only MiMo-V2.5 measured
LMArena Text: multi-turn14411445MiMo-V2.5
LMArena Text: longer queries14271445MiMo-V2.5
LMArena Text: writing and language14051409MiMo-V2.5
LMArena Text: entertainment and media14031399Gemma 4 26B A4B
LMArena Vision: English12561259MiMo-V2.5
LMArena Vision: Chinese13121326MiMo-V2.5
LMArena Vision: reading text12681256Gemma 4 26B A4B
LMArena Vision: humor12721226Gemma 4 26B A4B
LMArena Vision: captioning1297Not measuredOnly Gemma 4 26B A4B measured
LMArena Vision: recognizing things11911189Gemma 4 26B A4B
LMArena Vision: creative writing12561230Gemma 4 26B A4B
Neither model has a result on the other 14 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Gemma 4 26B A4B and MiMo-V2.5
BenchmarkGemma 4 26B A4BMiMo-V2.5Leader
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

Gemma 4 26B A4B$0.0002Fits in one request
MiMo-V2.5$0.0002Fits in one request

Gemma 4 26B A4B costs less

Repository review

50K input + 3K output tokens

Gemma 4 26B A4B$0.0046Fits in one request
MiMo-V2.5$0.0067Fits in one request

Gemma 4 26B A4B costs less

Agent loop

200K input + 10K output tokens

Gemma 4 26B A4B$0.018Fits in one request
MiMo-V2.5$0.026Fits in one request

Gemma 4 26B A4B 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 Gemma 4 26B A4B and MiMo-V2.5
SpecificationGoogle Gemma 4 26B A4BXiaomi MiMo-V2.5
MakerGoogleXiaomi
WeightsOpen weightsOpen weights
ReleasedApril 3, 2026April 22, 2026
Context window262K1.05M
Input $/Mtok$0.0765$0.119
Output $/Mtok$0.255$0.238
Coding index22.834.0
Independent measurements behind it11
Cost per solved taskNot computable$0.01
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemma 4 26B A4B better than MiMo-V2.5 for coding?

Pick MiMo-V2.5 for coding: it scores 34.0 on the Vibe Coding Index against 22.8 for Gemma 4 26B A4B. Pick Gemma 4 26B A4B when what matters is ALE-Bench or LMArena Vision: homework, where it leads.

Which is cheaper, Gemma 4 26B A4B or MiMo-V2.5?

Gemma 4 26B A4B costs $0.0765 per million input tokens and $0.255 per million output tokens; MiMo-V2.5 costs $0.119 and $0.238. Cost per solved task is known for MiMo-V2.5 only.

Which has the bigger context window, Gemma 4 26B A4B or MiMo-V2.5?

MiMo-V2.5, with 1.05M tokens against 262K.

How many benchmarks is the Gemma 4 26B A4B vs MiMo-V2.5 comparison based on?

47 benchmarks have a result for both models as of October 21, 2026. Gemma 4 26B A4B's coding index rests on 1 independent benchmark and MiMo-V2.5's on 1. Where only one model has a result, the page says so instead of naming a winner.

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