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Mercury 2 vs MiMo-V2.5-Pro

Updated October 21, 2026. 41 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace Mercury 2 Replace MiMo-V2.5-Pro
Mercury 2Inception
Coding
0.0
Overall
10.8
Output $/M
$0.75
0
MiMo-V2.5-ProXiaomi
Coding
40.0
Overall
26.0
Output $/M
$0.609
41
vs boards won of 41 shared

Decision reading

Pick MiMo-V2.5-Pro for coding: it scores 40.0 on the Vibe Coding Index against 0.0 for Mercury 2.

Mercury 2 is neither cheaper nor larger in context, and leads no benchmark both models were measured on.

Model AMercury 2Inception0.0/1001 independent benchmarkNo cost per solved taskModel BMiMo-V2.5-ProXiaomi40.0/1001 independent benchmark$0.03 per solved task
Shared results
41
Mercury 2 only
1
MiMo-V2.5-Pro only
29
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
Mercury 2 0.0 from 1 benchmark, MiMo-V2.5-Pro 40.0 from 1 benchmark.
Widest category
Web design, 29.1 points apart on average over 8 shared benchmarks.
Widest single gap
LMArena WebDev: React: Mercury 2 1160 against MiMo-V2.5-Pro 1469, 51.6 points apart on a 0 to 100 scale.
Output price
Mercury 2 $0.75 against MiMo-V2.5-Pro $0.609 per million output tokens, 1.2x apart.
Context window
Mercury 2 takes 128K 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
CategoryMercury 2BarsMiMo-V2.5-ProTies
Coding09
Intelligence01
Agentic work02
Reasoning05
Knowledge03
Web design08
General013
All shared boards041
CodingLike-for-likeFour of these boards feed the Vibe Coding Index09
Coding benchmarks for Mercury 2 and MiMo-V2.5-Pro
BenchmarkMercury 2MiMo-V2.5-ProLeader
LMArena WebDev11711480MiMo-V2.5-Pro
AA Coding Index31.160.2MiMo-V2.5-Pro
LiveCodeBench (Vals AI)Not measured81.3%Only MiMo-V2.5-Pro measured
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
SciCode37.7%50.6%MiMo-V2.5-Pro
Terminal-Bench Hard (Artificial Analysis run)26.5%43.2%MiMo-V2.5-Pro
WeirdML43.2%Not measuredOnly Mercury 2 measured
ALE-Bench785.6899.8MiMo-V2.5-Pro
LMArena Text: coding13901501MiMo-V2.5-Pro
LMArena Text: software and IT13851495MiMo-V2.5-Pro
LMArena WebDev: React11601469MiMo-V2.5-Pro
LMArena WebDev: HTML11991473MiMo-V2.5-Pro
Neither model has a result on the other 22 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
Intelligence benchmarks for Mercury 2 and MiMo-V2.5-Pro
BenchmarkMercury 2MiMo-V2.5-ProLeader
AA Intelligence Index10.826.0MiMo-V2.5-Pro
Neither model has a result on the other 1 board here
Agentic workLike-for-likePublic boards, shown as published, kept out of the index02
Agentic work benchmarks for Mercury 2 and MiMo-V2.5-Pro
BenchmarkMercury 2MiMo-V2.5-ProLeader
AA Agentic Index1.621.3MiMo-V2.5-Pro
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 Telecom70.8%94.2%MiMo-V2.5-Pro
Neither model has a result on the other 33 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index05
Reasoning benchmarks for Mercury 2 and MiMo-V2.5-Pro
BenchmarkMercury 2MiMo-V2.5-ProLeader
GPQA DiamondNot measured82.6%Only MiMo-V2.5-Pro measured
GPQA Diamond (Artificial Analysis run)77.0%86.6%MiMo-V2.5-Pro
Humanity's Last Exam (Artificial Analysis run)17.1%35.7%MiMo-V2.5-Pro
LMArena Text: hard prompts13621486MiMo-V2.5-Pro
LMArena Text: expert13581501MiMo-V2.5-Pro
LMArena Text: hard prompts in English13741494MiMo-V2.5-Pro
Neither model has a result on the other 15 boards here
MathDirectional onlyPublic boards, shown as published, kept out of the index3 boards, none shared
Math benchmarks for Mercury 2 and MiMo-V2.5-Pro
BenchmarkMercury 2MiMo-V2.5-ProLeader
ProofBenchNot measured22.0%Only MiMo-V2.5-Pro measured
LMArena Text: mathNot measured1481Only MiMo-V2.5-Pro measured
LMArena Text: mathematical workNot measured1491Only MiMo-V2.5-Pro measured
Neither model has a result on the other 10 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index03
Knowledge benchmarks for Mercury 2 and MiMo-V2.5-Pro
BenchmarkMercury 2MiMo-V2.5-ProLeader
MMLU ProNot measured84.6%Only MiMo-V2.5-Pro measured
LegalBench (Vals AI)Not measured77.1%Only MiMo-V2.5-Pro measured
CorpFin (Vals AI)Not measured61.4%Only MiMo-V2.5-Pro measured
TaxEval (Vals AI)Not measured73.8%Only MiMo-V2.5-Pro measured
MedCode (Vals AI)Not measured32.5%Only MiMo-V2.5-Pro measured
LMArena Text: science13431482MiMo-V2.5-Pro
LMArena Text: medicine and healthcare13631473MiMo-V2.5-Pro
LMArena Text: legal and governmentNot measured1474Only MiMo-V2.5-Pro measured
LMArena Text: business and finance13491466MiMo-V2.5-Pro
Neither model has a result on the other 8 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index08
Web design benchmarks for Mercury 2 and MiMo-V2.5-Pro
BenchmarkMercury 2MiMo-V2.5-ProLeader
Design Arena: websites10361267MiMo-V2.5-Pro
Design Arena: UI components9981248MiMo-V2.5-Pro
Design Arena: game dev9851261MiMo-V2.5-Pro
Design Arena: data viz10091257MiMo-V2.5-Pro
Design Arena: 3D9821244MiMo-V2.5-Pro
Design Arena: all code categories10221266MiMo-V2.5-Pro
Design Arena: SVG9981181MiMo-V2.5-Pro
Design Arena: ASCII art9901157MiMo-V2.5-Pro
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index013
General benchmarks for Mercury 2 and MiMo-V2.5-Pro
BenchmarkMercury 2MiMo-V2.5-ProLeader
MedScribe (Vals AI)Not measured83.7%Only MiMo-V2.5-Pro measured
IFBench69.8%79.9%MiMo-V2.5-Pro
Long context reasoning (AA-LCR)43.7%79.7%MiMo-V2.5-Pro
DTBenchNot measured84.5%Only MiMo-V2.5-Pro measured
LMCANot measured29.5%Only MiMo-V2.5-Pro measured
LMArena Text13541464MiMo-V2.5-Pro
LMArena Text: instruction following13281475MiMo-V2.5-Pro
LMArena Text: creative writing12861438MiMo-V2.5-Pro
LMArena Text: English13781477MiMo-V2.5-Pro
LMArena Text: non-English13301448MiMo-V2.5-Pro
LMArena Text: Chinese14141507MiMo-V2.5-Pro
LMArena Text: GermanNot measured1459Only MiMo-V2.5-Pro measured
LMArena Text: JapaneseNot measured1410Only MiMo-V2.5-Pro measured
LMArena Text: KoreanNot measured1435Only MiMo-V2.5-Pro measured
LMArena Text: FrenchNot measured1487Only MiMo-V2.5-Pro measured
LMArena Text: SpanishNot measured1469Only MiMo-V2.5-Pro measured
LMArena Text: Russian13041449MiMo-V2.5-Pro
LMArena Text: PolishNot measured1464Only MiMo-V2.5-Pro measured
LMArena Text: multi-turn13571476MiMo-V2.5-Pro
LMArena Text: longer queries13291481MiMo-V2.5-Pro
LMArena Text: writing and language13001451MiMo-V2.5-Pro
LMArena Text: entertainment and media13141438MiMo-V2.5-Pro
Neither model has a result on the other 24 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Mercury 2 and MiMo-V2.5-Pro
BenchmarkMercury 2MiMo-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

Mercury 2$0.0006Fits in one request
MiMo-V2.5-Pro$0.0006Fits in one request

MiMo-V2.5-Pro costs less

Repository review

50K input + 3K output tokens

Mercury 2$0.015Fits in one request
MiMo-V2.5-Pro$0.017Fits in one request

Mercury 2 costs less

Agent loop

200K input + 10K output tokens

Mercury 2$0.058Exceeds the context window
MiMo-V2.5-Pro$0.067Fits in one request

Mercury 2 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 Mercury 2 and MiMo-V2.5-Pro
SpecificationInception Mercury 2Xiaomi MiMo-V2.5-Pro
MakerInceptionXiaomi
WeightsNo public weights listedOpen weights
ReleasedMarch 4, 2026April 22, 2026
Context window128K1.05M
Input $/Mtok$0.25$0.3045
Output $/Mtok$0.75$0.609
Coding index0.040.0
Independent measurements behind it11
Cost per solved taskNot computable$0.03
SourceOpenRouter listingOpenRouter listing

Questions

Is Mercury 2 better than MiMo-V2.5-Pro for coding?

Pick MiMo-V2.5-Pro for coding: it scores 40.0 on the Vibe Coding Index against 0.0 for Mercury 2. Mercury 2 is neither cheaper nor larger in context, and leads no benchmark both models were measured on.

Which is cheaper, Mercury 2 or MiMo-V2.5-Pro?

Mercury 2 costs $0.25 per million input tokens and $0.75 per million output tokens; MiMo-V2.5-Pro costs $0.3045 and $0.609. Cost per solved task is known for MiMo-V2.5-Pro only.

Which has the bigger context window, Mercury 2 or MiMo-V2.5-Pro?

MiMo-V2.5-Pro, with 1.05M tokens against 128K.

How many benchmarks is the Mercury 2 vs MiMo-V2.5-Pro comparison based on?

41 benchmarks have a result for both models as of October 21, 2026. Mercury 2's coding index rests on 1 independent benchmark and MiMo-V2.5-Pro's on 1. Where only one model has a result, the page says so instead of naming a winner.

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