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o3 Mini vs MiMo-V2.5-Pro

MiMo-V2.5-Pro leads o3 Mini on the Artificial Analysis Intelligence Index, 26.0 to 12.5, and MiMo-V2.5-Pro costs 4.8x less per output token ($0.9152 vs $4.40 per million). Updated October 22, 2026; 44 benchmarks have a result for both.

Replace o3 Mini Replace MiMo-V2.5-Pro
o3 MiniOpenAI
Coding
No data
Overall
38.0
Output $/M
$4.40
0
MiMo-V2.5-ProXiaomi
Coding
31.6
Overall
39.3
Output $/M
$0.9152
44
vs boards won of 44 shared

o3 Mini or MiMo-V2.5-Pro: which to pick

Only MiMo-V2.5-Pro has a coding score, 31.6 on the Vibe Coding Index; o3 Mini has none, so the two cannot be ranked on coding.

Compare them on price, context and the boards below.

Model Ao3 MiniOpenAINot benchmarkedNo coding benchmarkNo cost per solved taskModel BMiMo-V2.5-ProXiaomi31.6/1004 independent benchmarks$0.03 per solved task
Shared results
44
o3 Mini only
27
MiMo-V2.5-Pro only
26
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.

At a glance

Coding index
o3 Mini not benchmarked, MiMo-V2.5-Pro 31.6 from 4 benchmarks.
Widest category
Agentic work, 62.9 points apart on average over 1 shared benchmark.
Widest single gap
τ²-Bench Telecom: o3 Mini 31.3% against MiMo-V2.5-Pro 94.2%, 62.9 points apart on a 0 to 100 scale.
Output price
o3 Mini $4.40 against MiMo-V2.5-Pro $0.9152 per million output tokens, 4.8x apart.
Context window
o3 Mini takes 200K tokens, MiMo-V2.5-Pro 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
Categoryo3 MiniBarsMiMo-V2.5-ProTies
Coding05
Intelligence01
Agentic work01
Reasoning06
Math02
Knowledge08
General021
All shared boards044
CodingLike-for-likeSix of these boards feed the Vibe Coding Index05
Coding benchmarks for o3 Mini and MiMo-V2.5-Pro
Benchmarko3 MiniMiMo-V2.5-ProLeader
Aider polyglot60.4%Not measuredOnly o3 Mini measured
SWE-bench Verified42.4%Not measuredOnly o3 Mini measured
SWE-bench Lite32.3%Not measuredOnly o3 Mini measured
LMArena WebDevNot measured1480Only MiMo-V2.5-Pro measured
AA Coding IndexNot measured60.2Only MiMo-V2.5-Pro measured
LiveCodeBench (Vals AI)71.5%81.3%MiMo-V2.5-Pro
SWE-bench Verified (Vals AI)Not measured74.0%Only MiMo-V2.5-Pro measured
Terminal-Bench 4 (Vals AI)Not measured0.5%Only MiMo-V2.5-Pro measured
Vibe Code Bench (Vals AI)Not measured34.1%Only MiMo-V2.5-Pro measured
Code migration (Vals AI)Not measured21.6%Only MiMo-V2.5-Pro measured
Terminal-Bench 2.1 (Vals AI)Not measured57.3%Only MiMo-V2.5-Pro measured
LiveCodeBench (Artificial Analysis run)73.4%Not measuredOnly o3 Mini measured
SciCode42.8%50.6%MiMo-V2.5-Pro
Terminal-Bench Hard (Artificial Analysis run)6.8%43.2%MiMo-V2.5-Pro
GSO-Bench1.3%Not measuredOnly o3 Mini measured
WeirdML43.7%Not measuredOnly o3 Mini measured
Cybench22.5%Not measuredOnly o3 Mini measured
ALE-BenchNot measured899.8Only MiMo-V2.5-Pro measured
LMArena Text: coding13781501MiMo-V2.5-Pro
LMArena Text: software and IT13641495MiMo-V2.5-Pro
LMArena WebDev: ReactNot measured1469Only MiMo-V2.5-Pro measured
LMArena WebDev: HTMLNot measured1473Only MiMo-V2.5-Pro measured
SciCode7.7%Not measuredOnly o3 Mini 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 o3 Mini and MiMo-V2.5-Pro
Benchmarko3 MiniMiMo-V2.5-ProLeader
AA Intelligence Index12.526.0MiMo-V2.5-Pro
Epoch Capabilities Index140.2Not measuredOnly o3 Mini measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index01
Agentic work benchmarks for o3 Mini and MiMo-V2.5-Pro
Benchmarko3 MiniMiMo-V2.5-ProLeader
AA Agentic IndexNot measured21.3Only MiMo-V2.5-Pro measured
Finance Agent (Vals AI)Not measured41.5%Only MiMo-V2.5-Pro measured
Tax Agent Bench (Vals AI)Not measured11.5%Only MiMo-V2.5-Pro measured
Legal Research Bench (Vals AI)Not measured15.9%Only MiMo-V2.5-Pro measured
Excel Modeling Benchmark (Vals AI)Not measured55.2%Only MiMo-V2.5-Pro measured
τ²-Bench Telecom31.3%94.2%MiMo-V2.5-Pro
Neither model has a result on the other 35 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index06
Reasoning benchmarks for o3 Mini and MiMo-V2.5-Pro
Benchmarko3 MiniMiMo-V2.5-ProLeader
GPQA Diamond75.5%82.6%MiMo-V2.5-Pro
GPQA Diamond (Artificial Analysis run)77.3%86.6%MiMo-V2.5-Pro
Humanity's Last Exam (Artificial Analysis run)12.0%35.7%MiMo-V2.5-Pro
GPQA Diamond (Epoch AI run)77.0%Not measuredOnly o3 Mini measured
ARC-AGI34.5%Not measuredOnly o3 Mini measured
ARC-AGI-23.0%Not measuredOnly o3 Mini measured
SimpleBench22.8%Not measuredOnly o3 Mini measured
Chess puzzles15.0%Not measuredOnly o3 Mini measured
Mystery game puzzles7.0%Not measuredOnly o3 Mini measured
LMArena Text: hard prompts13651486MiMo-V2.5-Pro
LMArena Text: expert13641501MiMo-V2.5-Pro
LMArena Text: hard prompts in English13751494MiMo-V2.5-Pro
Neither model has a result on the other 10 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index02
Math benchmarks for o3 Mini and MiMo-V2.5-Pro
Benchmarko3 MiniMiMo-V2.5-ProLeader
AIME86.5%Not measuredOnly o3 Mini measured
MATH 500 (Vals AI)91.8%Not measuredOnly o3 Mini measured
MGSM (Vals AI)91.3%Not measuredOnly o3 Mini measured
OTIS Mock AIME76.9%Not measuredOnly o3 Mini measured
FrontierMath, tiers 1 to 318.6%Not measuredOnly o3 Mini measured
FrontierMath, tier 40.0%Not measuredOnly o3 Mini measured
ProofBenchNot measured22.0%Only MiMo-V2.5-Pro measured
MATH level 596.5%Not measuredOnly o3 Mini measured
LMArena Text: math13961481MiMo-V2.5-Pro
LMArena Text: mathematical work13991491MiMo-V2.5-Pro
Neither model has a result on the other 3 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index08
Knowledge benchmarks for o3 Mini and MiMo-V2.5-Pro
Benchmarko3 MiniMiMo-V2.5-ProLeader
MMLU Pro78.7%84.6%MiMo-V2.5-Pro
LegalBench (Vals AI)71.5%77.1%MiMo-V2.5-Pro
CorpFin (Vals AI)45.3%61.4%MiMo-V2.5-Pro
TaxEval (Vals AI)69.4%73.8%MiMo-V2.5-Pro
MedQA (Vals AI)94.8%Not measuredOnly o3 Mini measured
MedCode (Vals AI)Not measured32.5%Only MiMo-V2.5-Pro measured
MMLU Pro (Artificial Analysis run)80.2%Not measuredOnly o3 Mini measured
SimpleQA Verified15.3%Not measuredOnly o3 Mini measured
LMArena Text: science13391482MiMo-V2.5-Pro
LMArena Text: medicine and healthcare13301473MiMo-V2.5-Pro
LMArena Text: legal and government13281474MiMo-V2.5-Pro
LMArena Text: business and finance13131466MiMo-V2.5-Pro
Neither model has a result on the other 6 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
Web design benchmarks for o3 Mini and MiMo-V2.5-Pro
Benchmarko3 MiniMiMo-V2.5-ProLeader
Design Arena: websitesNot measured1266Only MiMo-V2.5-Pro measured
Design Arena: UI componentsNot measured1246Only MiMo-V2.5-Pro measured
Design Arena: game devNot measured1261Only MiMo-V2.5-Pro measured
Design Arena: data vizNot measured1257Only MiMo-V2.5-Pro measured
Design Arena: 3DNot measured1243Only MiMo-V2.5-Pro measured
Design Arena: all code categoriesNot measured1265Only MiMo-V2.5-Pro measured
Design Arena: SVGNot measured1181Only MiMo-V2.5-Pro measured
Design Arena: ASCII artNot measured1156Only MiMo-V2.5-Pro measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index021
General benchmarks for o3 Mini and MiMo-V2.5-Pro
Benchmarko3 MiniMiMo-V2.5-ProLeader
MedScribe (Vals AI)Not measured83.7%Only MiMo-V2.5-Pro measured
IFBench67.1%79.9%MiMo-V2.5-Pro
Long context reasoning (AA-LCR)43.0%79.7%MiMo-V2.5-Pro
DTBench68.8%84.5%MiMo-V2.5-Pro
LMCA19.0%29.5%MiMo-V2.5-Pro
Fiction.LiveBench50.0%Not measuredOnly o3 Mini measured
Creative writing (Lech Mazur)61.7%Not measuredOnly o3 Mini measured
LMArena Text13371464MiMo-V2.5-Pro
LMArena Text: instruction following13371475MiMo-V2.5-Pro
LMArena Text: creative writing12861438MiMo-V2.5-Pro
LMArena Text: English13511477MiMo-V2.5-Pro
LMArena Text: non-English13191448MiMo-V2.5-Pro
LMArena Text: Chinese13791507MiMo-V2.5-Pro
LMArena Text: German13031459MiMo-V2.5-Pro
LMArena Text: Japanese12861410MiMo-V2.5-Pro
LMArena Text: Korean13131435MiMo-V2.5-Pro
LMArena Text: French13341487MiMo-V2.5-Pro
LMArena Text: Spanish13211469MiMo-V2.5-Pro
LMArena Text: Russian13041449MiMo-V2.5-Pro
LMArena Text: Polish12941464MiMo-V2.5-Pro
LMArena Text: multi-turn13201476MiMo-V2.5-Pro
LMArena Text: longer queries13431481MiMo-V2.5-Pro
LMArena Text: writing and language13131451MiMo-V2.5-Pro
LMArena Text: entertainment and media12831438MiMo-V2.5-Pro
Neither model has a result on the other 22 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for o3 Mini and MiMo-V2.5-Pro
Benchmarko3 MiniMiMo-V2.5-ProLeader
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

o3 Mini$0.0033Fits in one request
MiMo-V2.5-Pro$0.0009Fits in one request

MiMo-V2.5-Pro costs less

Repository review

50K input + 3K output tokens

o3 Mini$0.068Fits in one request
MiMo-V2.5-Pro$0.026Fits in one request

MiMo-V2.5-Pro costs less

Agent loop

200K input + 10K output tokens

o3 Mini$0.264Exceeds the context window
MiMo-V2.5-Pro$0.101Fits in one request

MiMo-V2.5-Pro 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 o3 Mini and MiMo-V2.5-Pro
SpecificationOpenAI o3 MiniXiaomi MiMo-V2.5-Pro
MakerOpenAIXiaomi
WeightsNo public weights listedOpen weights
ReleasedJanuary 31, 2025April 22, 2026
Context window200K1.05M
Input $/Mtok$1.10$0.4575
Output $/Mtok$4.40$0.9152
Coding indexNot benchmarked31.6
Independent measurements behind it04
Cost per solved taskNot computable$0.03
SourceOpenRouter listingOpenRouter listing

Questions

Is o3 Mini better than MiMo-V2.5-Pro for coding?

Only MiMo-V2.5-Pro has a coding score, 31.6 on the Vibe Coding Index; o3 Mini has none, so the two cannot be ranked on coding. Compare them on price, context and the boards below.

Which is cheaper, o3 Mini or MiMo-V2.5-Pro?

o3 Mini costs $1.10 per million input tokens and $4.40 per million output tokens; MiMo-V2.5-Pro costs $0.4575 and $0.9152. Cost per solved task is known for MiMo-V2.5-Pro only.

Which has the bigger context window, o3 Mini or MiMo-V2.5-Pro?

MiMo-V2.5-Pro, with 1.05M tokens against 200K.

How many benchmarks is the o3 Mini vs MiMo-V2.5-Pro comparison based on?

44 benchmarks have a result for both models as of October 22, 2026. o3 Mini's coding index rests on 0 independent benchmarks and MiMo-V2.5-Pro's on 4. Where only one model has a result, the page says so instead of naming a winner.

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