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GPT-5 Mini vs MiMo-V2.6-Flash

MiMo-V2.6-Flash leads GPT-5 Mini on coding, 54.7 to 34.2 on the Vibe Coding Index, and MiMo-V2.6-Flash costs 7.1x less per output token ($0.28 vs $2.00 per million). Updated October 21, 2026; 43 benchmarks have a result for both.

Replace GPT-5 Mini Replace MiMo-V2.6-Flash
GPT-5 MiniOpenAI
Coding
34.2
Overall
43.7
Output $/M
$2.00
1
MiMo-V2.6-FlashXiaomi
Coding
54.7
Overall
60.8
Output $/M
$0.28
42
vs boards won of 43 shared

GPT-5 Mini 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 34.2 for GPT-5 Mini.

Pick GPT-5 Mini for work measured by MedCode (Vals AI), where it leads.

Model AGPT-5 MiniOpenAI34.2/1002 independent benchmarks$0.08 per solved taskModel BMiMo-V2.6-FlashXiaomi54.7/1003 independent benchmarksNo cost per solved task
Shared results
43
GPT-5 Mini only
58
MiMo-V2.6-Flash only
23
Like-for-like categories
6 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
GPT-5 Mini 34.2 from 2 benchmarks, MiMo-V2.6-Flash 54.7 from 3 benchmarks.
Widest category
Math, 28.9 points apart on average over 3 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): GPT-5 Mini 14.2% against MiMo-V2.6-Flash 79.0%, 64.8 points apart on a 0 to 100 scale.
Output price
GPT-5 Mini $2.00 against MiMo-V2.6-Flash $0.28 per million output tokens, 7.1x apart.
Context window
GPT-5 Mini takes 400K 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
CategoryGPT-5 MiniBarsMiMo-V2.6-FlashTies
Coding04
Intelligence01
Reasoning06
Math03
Knowledge14
General024
All shared boards142
CodingLike-for-likeSix of these boards feed the Vibe Coding Index04
Coding benchmarks for GPT-5 Mini and MiMo-V2.6-Flash
BenchmarkGPT-5 MiniMiMo-V2.6-FlashLeader
SWE-bench Verified59.8%Not measuredOnly GPT-5 Mini measured
SWE-bench Multilingual39.7%Not measuredOnly GPT-5 Mini measured
LMArena WebDevNot measured1634Only MiMo-V2.6-Flash measured
LiveCodeBench (Vals AI)86.6%Not measuredOnly GPT-5 Mini measured
SWE-bench Verified (Vals AI)60.8%Not measuredOnly GPT-5 Mini measured
Terminal-Bench 4 (Vals AI)Not measured24.2%Only MiMo-V2.6-Flash measured
Vibe Code Bench (Vals AI)14.2%79.0%MiMo-V2.6-Flash
Code migration (Vals AI)Not measured40.9%Only MiMo-V2.6-Flash measured
ProgramBench (Vals AI)Not measured0.5%Only MiMo-V2.6-Flash measured
IOI (Vals AI)Not measured47.7%Only MiMo-V2.6-Flash measured
Terminal-Bench 2.1 (Vals AI)Not measured76.4%Only MiMo-V2.6-Flash measured
CyberBench (Vals AI)Not measured75.4%Only MiMo-V2.6-Flash measured
LiveCodeBench (Artificial Analysis run)83.8%Not measuredOnly GPT-5 Mini measured
SciCode39.0%51.3%MiMo-V2.6-Flash
Terminal-Bench Hard (Artificial Analysis run)33.3%Not measuredOnly GPT-5 Mini measured
Terminal-Bench34.8%Not measuredOnly GPT-5 Mini measured
WeirdML52.7%Not measuredOnly GPT-5 Mini measured
ALE-BenchNot measured1244.2Only MiMo-V2.6-Flash measured
LMArena Text: coding14061499MiMo-V2.6-Flash
LMArena Text: software and IT13941497MiMo-V2.6-Flash
LMArena WebDev: ReactNot measured1648Only MiMo-V2.6-Flash measured
LMArena WebDev: HTMLNot measured1641Only MiMo-V2.6-Flash measured
LMArena WebDev: from an imageNot measured1596Only MiMo-V2.6-Flash measured
Neither model has a result on the other 16 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
Intelligence benchmarks for GPT-5 Mini and MiMo-V2.6-Flash
BenchmarkGPT-5 MiniMiMo-V2.6-FlashLeader
AA Intelligence Index20.637.9MiMo-V2.6-Flash
Epoch Capabilities Index145.3Not measuredOnly GPT-5 Mini measured
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index12 boards, none shared
Agentic work benchmarks for GPT-5 Mini and MiMo-V2.6-Flash
BenchmarkGPT-5 MiniMiMo-V2.6-FlashLeader
SREBench (Vals AI)Not measured4.2%Only MiMo-V2.6-Flash measured
Finance Agent (Vals AI)Not measured56.3%Only MiMo-V2.6-Flash measured
Tax Agent Bench (Vals AI)Not measured28.5%Only MiMo-V2.6-Flash measured
Legal Research Bench (Vals AI)Not measured38.0%Only MiMo-V2.6-Flash measured
Harvey's Legal Agent Benchmark (Vals AI)Not measured13.3%Only MiMo-V2.6-Flash measured
Excel Modeling Benchmark (Vals AI)Not measured65.5%Only MiMo-V2.6-Flash measured
BioMysteryBench (Vals AI)Not measured69.3%Only MiMo-V2.6-Flash measured
Terminal-Bench-Science (Vals AI)Not measured4.3%Only MiMo-V2.6-Flash measured
Vals Science IndexNot measured31.7%Only MiMo-V2.6-Flash measured
τ²-Bench Telecom71.1%Not measuredOnly GPT-5 Mini measured
Vending-Bench 2-$31Not measuredOnly GPT-5 Mini measured
Berkeley Function Calling Leaderboard (BFCL)55.5%Not measuredOnly GPT-5 Mini measured
Neither model has a result on the other 29 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index06
Reasoning benchmarks for GPT-5 Mini and MiMo-V2.6-Flash
BenchmarkGPT-5 MiniMiMo-V2.6-FlashLeader
GPQA Diamond80.3%Not measuredOnly GPT-5 Mini measured
MysteryMechanism (Vals AI)Not measured21.6%Only MiMo-V2.6-Flash measured
MMMU Pro (Vals AI)78.9%Not measuredOnly GPT-5 Mini measured
GPQA Diamond (Artificial Analysis run)82.8%Not measuredOnly GPT-5 Mini measured
Humanity's Last Exam (Artificial Analysis run)21.5%35.1%MiMo-V2.6-Flash
GPQA Diamond (Epoch AI run)75.0%Not measuredOnly GPT-5 Mini measured
ARC-AGI54.3%Not measuredOnly GPT-5 Mini measured
ARC-AGI-24.4%Not measuredOnly GPT-5 Mini measured
Chess puzzles24.0%Not measuredOnly GPT-5 Mini measured
Mystery game puzzles10.0%Not measuredOnly GPT-5 Mini measured
VPCT40.2%Not measuredOnly GPT-5 Mini measured
LMArena Text: hard prompts13801475MiMo-V2.6-Flash
LMArena Text: expert13791496MiMo-V2.6-Flash
LMArena Text: hard prompts in English13831493MiMo-V2.6-Flash
LMArena Vision: diagrams12021276MiMo-V2.6-Flash
LMArena Vision: homework12101283MiMo-V2.6-Flash
Kagi LLM Benchmark70.3%Not measuredOnly GPT-5 Mini measured
Neither model has a result on the other 5 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index03
Math benchmarks for GPT-5 Mini and MiMo-V2.6-Flash
BenchmarkGPT-5 MiniMiMo-V2.6-FlashLeader
AIME91.5%Not measuredOnly GPT-5 Mini measured
MATH 500 (Vals AI)94.8%Not measuredOnly GPT-5 Mini measured
MGSM (Vals AI)92.6%Not measuredOnly GPT-5 Mini measured
AA Math Index90.7Not measuredOnly GPT-5 Mini measured
AIME 2025 (Artificial Analysis run)90.7%Not measuredOnly GPT-5 Mini measured
OTIS Mock AIME86.7%Not measuredOnly GPT-5 Mini measured
FrontierMath, tiers 1 to 346.7%Not measuredOnly GPT-5 Mini measured
FrontierMath, tier 412.2%Not measuredOnly GPT-5 Mini measured
ProofBench9.0%63.0%MiMo-V2.6-Flash
MATH level 597.8%Not measuredOnly GPT-5 Mini measured
LMArena Text: math13781476MiMo-V2.6-Flash
LMArena Text: mathematical work13801478MiMo-V2.6-Flash
Neither model has a result on the other 1 board here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index14
Knowledge benchmarks for GPT-5 Mini and MiMo-V2.6-Flash
BenchmarkGPT-5 MiniMiMo-V2.6-FlashLeader
MMLU Pro82.2%Not measuredOnly GPT-5 Mini measured
LegalBench (Vals AI)81.8%Not measuredOnly GPT-5 Mini measured
CaseLaw (Vals AI)68.5%Not measuredOnly GPT-5 Mini measured
CorpFin (Vals AI)60.2%Not measuredOnly GPT-5 Mini measured
TaxEval (Vals AI)75.2%Not measuredOnly GPT-5 Mini measured
MortgageTax (Vals AI)66.9%Not measuredOnly GPT-5 Mini measured
MedQA (Vals AI)96.1%Not measuredOnly GPT-5 Mini measured
MedCode (Vals AI)43.0%41.1%GPT-5 Mini
MMLU Pro (Artificial Analysis run)83.7%Not measuredOnly GPT-5 Mini measured
SimpleQA Verified21.6%Not measuredOnly GPT-5 Mini measured
LMArena Text: science13711462MiMo-V2.6-Flash
LMArena Text: medicine and healthcare13801439MiMo-V2.6-Flash
LMArena Text: legal and government13751441MiMo-V2.6-Flash
LMArena Text: business and finance13581454MiMo-V2.6-Flash
FACTS Benchmark Suite38.6%Not measuredOnly GPT-5 Mini measured
Neither model has a result on the other 3 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
Web design benchmarks for GPT-5 Mini and MiMo-V2.6-Flash
BenchmarkGPT-5 MiniMiMo-V2.6-FlashLeader
Design Arena: websites1125Not measuredOnly GPT-5 Mini measured
Design Arena: UI components1106Not measuredOnly GPT-5 Mini measured
Design Arena: game dev1130Not measuredOnly GPT-5 Mini measured
Design Arena: data viz1130Not measuredOnly GPT-5 Mini measured
Design Arena: 3D1037Not measuredOnly GPT-5 Mini measured
Design Arena: all code categories1115Not measuredOnly GPT-5 Mini measured
Design Arena: SVG1091Not measuredOnly GPT-5 Mini measured
Design Arena: ASCII art1125Not measuredOnly GPT-5 Mini measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index024
General benchmarks for GPT-5 Mini and MiMo-V2.6-Flash
BenchmarkGPT-5 MiniMiMo-V2.6-FlashLeader
Vals IndexNot measured54.8%Only MiMo-V2.6-Flash measured
Public Benefits Bench (Vals AI)Not measured67.6%Only MiMo-V2.6-Flash measured
SAGE (Vals AI)43.0%43.5%MiMo-V2.6-Flash
MedScribe (Vals AI)80.6%85.3%MiMo-V2.6-Flash
IFBench75.4%Not measuredOnly GPT-5 Mini measured
Long context reasoning (AA-LCR)72.3%74.3%MiMo-V2.6-Flash
DTBench80.5%Not measuredOnly GPT-5 Mini measured
LMCA34.2%Not measuredOnly GPT-5 Mini measured
Fiction.LiveBench69.4%Not measuredOnly GPT-5 Mini measured
Creative writing (Lech Mazur)83.1%Not measuredOnly GPT-5 Mini measured
LMArena Text13731453MiMo-V2.6-Flash
LMArena Text: instruction following13571452MiMo-V2.6-Flash
LMArena Text: creative writing13251403MiMo-V2.6-Flash
LMArena Vision12021256MiMo-V2.6-Flash
LMArena Text: English13791476MiMo-V2.6-Flash
LMArena Text: non-English13631431MiMo-V2.6-Flash
LMArena Text: Chinese13861509MiMo-V2.6-Flash
LMArena Text: German13661458MiMo-V2.6-Flash
LMArena Text: Japanese13411359MiMo-V2.6-Flash
LMArena Text: Korean13081425MiMo-V2.6-Flash
LMArena Text: French13861480MiMo-V2.6-Flash
LMArena Text: Spanish13541453MiMo-V2.6-Flash
LMArena Text: Russian13621409MiMo-V2.6-Flash
LMArena Text: Polish13781455MiMo-V2.6-Flash
LMArena Text: multi-turn13631447MiMo-V2.6-Flash
LMArena Text: longer queries13551459MiMo-V2.6-Flash
LMArena Text: writing and language13441424MiMo-V2.6-Flash
LMArena Text: entertainment and media13401415MiMo-V2.6-Flash
LMArena Vision: English12161269MiMo-V2.6-Flash
LMArena Vision: Chinese1214Not measuredOnly GPT-5 Mini measured
LMArena Vision: reading text11991270MiMo-V2.6-Flash
LMArena Vision: humor1205Not measuredOnly GPT-5 Mini measured
LMArena Vision: captioning1217Not measuredOnly GPT-5 Mini measured
LMArena Vision: recognizing things1226Not measuredOnly GPT-5 Mini measured
LMArena Vision: creative writing11811231MiMo-V2.6-Flash
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 GPT-5 Mini and MiMo-V2.6-Flash
BenchmarkGPT-5 MiniMiMo-V2.6-FlashLeader
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 Mini$0.0013Fits 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

GPT-5 Mini$0.018Fits 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

GPT-5 Mini$0.070Fits 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 GPT-5 Mini and MiMo-V2.6-Flash
SpecificationOpenAI GPT-5 MiniXiaomi MiMo-V2.6-Flash
MakerOpenAIXiaomi
WeightsNo public weights listedOpen weights
ReleasedAugust 7, 2025September 21, 2026
Context window400K1.05M
Input $/Mtok$0.25$0.14
Output $/Mtok$2.00$0.28
Coding index34.254.7
Independent measurements behind it23
Cost per solved task$0.08Not computable
SourceOpenRouter listingOpenRouter listing

Questions

Is GPT-5 Mini 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 34.2 for GPT-5 Mini. Pick GPT-5 Mini for work measured by MedCode (Vals AI), where it leads.

Which is cheaper, GPT-5 Mini or MiMo-V2.6-Flash?

GPT-5 Mini costs $0.25 per million input tokens and $2.00 per million output tokens; MiMo-V2.6-Flash costs $0.14 and $0.28. Cost per solved task is known for GPT-5 Mini only.

Which has the bigger context window, GPT-5 Mini or MiMo-V2.6-Flash?

MiMo-V2.6-Flash, with 1.05M tokens against 400K.

How many benchmarks is the GPT-5 Mini vs MiMo-V2.6-Flash comparison based on?

43 benchmarks have a result for both models as of October 21, 2026. GPT-5 Mini's coding index rests on 2 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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<p style="font:13px/1.4 sans-serif;margin:6px 0 0">Source: <a href="https://llmbenchmark.ai/compare/gpt-5-mini-vs-xiaomi-mimo-v2-6-flash">LLMBenchmark.ai, GPT-5 Mini vs MiMo-V2.6-Flash</a></p>