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DeepSeek V3.2 Exp vs GPT-5 Mini

Updated October 21, 2026. 51 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace DeepSeek V3.2 Exp Replace GPT-5 Mini
DeepSeek V3.2 ExpDeepSeek
Coding
55.0
Overall
16.6
Output $/M
$0.41
36
GPT-5 MiniOpenAI
Coding
59.8
Overall
20.6
Output $/M
$2.00
14
vs boards won of 51 shared, 1 tied

Decision reading

Pick GPT-5 Mini for coding: it scores 59.8 on the Vibe Coding Index against 55.0 for DeepSeek V3.2 Exp, though on 1 benchmark against 2.

Pick DeepSeek V3.2 Exp when output tokens cost 4.9x less, or when what matters is LMArena Text: coding or LMArena Text: software and IT, where it leads.

Model ADeepSeek V3.2 ExpDeepSeek55.0/1002 independent benchmarksNo cost per solved taskModel BGPT-5 MiniOpenAI59.8/1001 independent benchmark$0.08 per solved task
Shared results
51
DeepSeek V3.2 Exp only
6
GPT-5 Mini only
47
Like-for-like categories
8 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
DeepSeek V3.2 Exp 55.0 from 2 benchmarks, GPT-5 Mini 59.8 from 1 benchmark.
Widest category
Agentic work, 37.1 points apart on average over 1 shared benchmark.
Widest single gap
τ²-Bench Telecom: DeepSeek V3.2 Exp 33.9% against GPT-5 Mini 71.1%, 37.1 points apart on a 0 to 100 scale.
Output price
DeepSeek V3.2 Exp $0.41 against GPT-5 Mini $2.00 per million output tokens, 4.9x apart.
Context window
DeepSeek V3.2 Exp takes 164K tokens, GPT-5 Mini 400K.

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
CategoryDeepSeek V3.2 ExpBarsGPT-5 MiniTies
Coding23
Intelligence02
Agentic work01
Reasoning32
Math22
Knowledge50
Web design61
General1831 tie
All shared boards36141 tie
CodingLike-for-likeFour of these boards feed the Vibe Coding Index23
Coding benchmarks for DeepSeek V3.2 Exp and GPT-5 Mini
BenchmarkDeepSeek V3.2 ExpGPT-5 MiniLeader
Aider polyglot74.2%Not measuredOnly DeepSeek V3.2 Exp measured
SWE-bench VerifiedNot measured59.8%Only GPT-5 Mini measured
SWE-bench MultilingualNot measured39.7%Only GPT-5 Mini measured
LMArena WebDev1272Not measuredOnly DeepSeek V3.2 Exp measured
LiveCodeBench (Vals AI)Not measured86.6%Only GPT-5 Mini measured
SWE-bench Verified (Vals AI)Not measured60.8%Only GPT-5 Mini measured
Vibe Code Bench (Vals AI)Not measured14.2%Only GPT-5 Mini measured
LiveCodeBench (Artificial Analysis run)78.9%83.8%GPT-5 Mini
SciCodeNot measured39.0%Only GPT-5 Mini measured
Terminal-Bench Hard (Artificial Analysis run)31.1%33.3%GPT-5 Mini
Terminal-BenchNot measured34.8%Only GPT-5 Mini measured
WeirdML39.5%52.7%GPT-5 Mini
LMArena Text: coding14381406DeepSeek V3.2 Exp
LMArena Text: software and IT14381394DeepSeek V3.2 Exp
LMArena WebDev: HTML1281Not measuredOnly DeepSeek V3.2 Exp measured
Neither model has a result on the other 23 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
Intelligence benchmarks for DeepSeek V3.2 Exp and GPT-5 Mini
BenchmarkDeepSeek V3.2 ExpGPT-5 MiniLeader
AA Intelligence Index16.620.6GPT-5 Mini
Epoch Capabilities Index144.9145.3GPT-5 Mini
Agentic workLike-for-likePublic boards, shown as published, kept out of the index01
Agentic work benchmarks for DeepSeek V3.2 Exp and GPT-5 Mini
BenchmarkDeepSeek V3.2 ExpGPT-5 MiniLeader
τ²-Bench Telecom33.9%71.1%GPT-5 Mini
TheAgentCompany42.9%Not measuredOnly DeepSeek V3.2 Exp measured
Vending-Bench 2Not measured-$31Only GPT-5 Mini measured
Neither model has a result on the other 36 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index32
Reasoning benchmarks for DeepSeek V3.2 Exp and GPT-5 Mini
BenchmarkDeepSeek V3.2 ExpGPT-5 MiniLeader
GPQA DiamondNot measured80.3%Only GPT-5 Mini measured
MMMU Pro (Vals AI)Not measured78.9%Only GPT-5 Mini measured
GPQA Diamond (Artificial Analysis run)79.7%82.8%GPT-5 Mini
Humanity's Last Exam (Artificial Analysis run)14.9%21.5%GPT-5 Mini
GPQA Diamond (Epoch AI run)Not measured75.0%Only GPT-5 Mini measured
ARC-AGINot measured54.3%Only GPT-5 Mini measured
ARC-AGI-2Not measured4.4%Only GPT-5 Mini measured
Chess puzzlesNot measured24.0%Only GPT-5 Mini measured
Mystery game puzzlesNot measured10.0%Only GPT-5 Mini measured
VPCTNot measured40.2%Only GPT-5 Mini measured
LMArena Text: hard prompts14291380DeepSeek V3.2 Exp
LMArena Text: expert14221379DeepSeek V3.2 Exp
LMArena Text: hard prompts in English14441383DeepSeek V3.2 Exp
LMArena Vision: diagramsNot measured1202Only GPT-5 Mini measured
LMArena Vision: homeworkNot measured1210Only GPT-5 Mini measured
Neither model has a result on the other 6 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index22
Math benchmarks for DeepSeek V3.2 Exp and GPT-5 Mini
BenchmarkDeepSeek V3.2 ExpGPT-5 MiniLeader
AIMENot measured91.5%Only GPT-5 Mini measured
MATH 500 (Vals AI)Not measured94.8%Only GPT-5 Mini measured
MGSM (Vals AI)Not measured92.6%Only GPT-5 Mini measured
AA Math Index87.790.7GPT-5 Mini
AIME 2025 (Artificial Analysis run)87.7%90.7%GPT-5 Mini
OTIS Mock AIMENot measured86.7%Only GPT-5 Mini measured
FrontierMath, tiers 1 to 3Not measured46.7%Only GPT-5 Mini measured
FrontierMath, tier 4Not measured12.2%Only GPT-5 Mini measured
ProofBenchNot measured9.0%Only GPT-5 Mini measured
MATH level 5Not measured97.8%Only GPT-5 Mini measured
LMArena Text: math14221378DeepSeek V3.2 Exp
LMArena Text: mathematical work14331380DeepSeek V3.2 Exp
Neither model has a result on the other 1 board here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index50
Knowledge benchmarks for DeepSeek V3.2 Exp and GPT-5 Mini
BenchmarkDeepSeek V3.2 ExpGPT-5 MiniLeader
MMLU ProNot measured82.2%Only GPT-5 Mini measured
LegalBench (Vals AI)Not measured81.8%Only GPT-5 Mini measured
CaseLaw (Vals AI)Not measured68.5%Only GPT-5 Mini measured
CorpFin (Vals AI)Not measured60.2%Only GPT-5 Mini measured
TaxEval (Vals AI)Not measured75.2%Only GPT-5 Mini measured
MortgageTax (Vals AI)Not measured66.9%Only GPT-5 Mini measured
MedQA (Vals AI)Not measured96.1%Only GPT-5 Mini measured
MedCode (Vals AI)Not measured43.0%Only GPT-5 Mini measured
MMLU Pro (Artificial Analysis run)85.0%83.7%DeepSeek V3.2 Exp
SimpleQA VerifiedNot measured21.6%Only GPT-5 Mini measured
LMArena Text: science14431371DeepSeek V3.2 Exp
LMArena Text: medicine and healthcare14681380DeepSeek V3.2 Exp
LMArena Text: legal and government14191375DeepSeek V3.2 Exp
LMArena Text: business and finance14121358DeepSeek V3.2 Exp
Neither model has a result on the other 3 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index61
Web design benchmarks for DeepSeek V3.2 Exp and GPT-5 Mini
BenchmarkDeepSeek V3.2 ExpGPT-5 MiniLeader
Design Arena: websites11791125DeepSeek V3.2 Exp
Design Arena: UI components11661106DeepSeek V3.2 Exp
Design Arena: game dev11451130DeepSeek V3.2 Exp
Design Arena: data viz11521131DeepSeek V3.2 Exp
Design Arena: 3D11481037DeepSeek V3.2 Exp
Design Arena: all code categories11711115DeepSeek V3.2 Exp
Design Arena: SVG10311091GPT-5 Mini
Design Arena: ASCII artNot measured1124Only 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 index183
General benchmarks for DeepSeek V3.2 Exp and GPT-5 Mini
BenchmarkDeepSeek V3.2 ExpGPT-5 MiniLeader
SAGE (Vals AI)Not measured43.0%Only GPT-5 Mini measured
MedScribe (Vals AI)Not measured80.6%Only GPT-5 Mini measured
IFBench54.1%75.4%GPT-5 Mini
Long context reasoning (AA-LCR)72.3%72.3%Tie
DTBench87.7%80.5%DeepSeek V3.2 Exp
LMCA29.1%34.2%GPT-5 Mini
Fiction.LiveBench83.3%69.4%DeepSeek V3.2 Exp
Creative writing (Lech Mazur)Not measured83.1%Only GPT-5 Mini measured
CL-bench13.2%Not measuredOnly DeepSeek V3.2 Exp measured
CL-bench Life9.5%Not measuredOnly DeepSeek V3.2 Exp measured
LMArena Text14251373DeepSeek V3.2 Exp
LMArena Text: instruction following14011357DeepSeek V3.2 Exp
LMArena Text: creative writing14041325DeepSeek V3.2 Exp
LMArena VisionNot measured1202Only GPT-5 Mini measured
LMArena Text: English14411379DeepSeek V3.2 Exp
LMArena Text: non-English14041363DeepSeek V3.2 Exp
LMArena Text: Chinese14611386DeepSeek V3.2 Exp
LMArena Text: German14401366DeepSeek V3.2 Exp
LMArena Text: Japanese13311341GPT-5 Mini
LMArena Text: Korean13721308DeepSeek V3.2 Exp
LMArena Text: French14341386DeepSeek V3.2 Exp
LMArena Text: Spanish14411354DeepSeek V3.2 Exp
LMArena Text: Russian14121362DeepSeek V3.2 Exp
LMArena Text: Polish14351378DeepSeek V3.2 Exp
LMArena Text: multi-turn14221363DeepSeek V3.2 Exp
LMArena Text: longer queries14181355DeepSeek V3.2 Exp
LMArena Text: writing and language14071344DeepSeek V3.2 Exp
LMArena Text: entertainment and media14071340DeepSeek V3.2 Exp
LMArena Vision: EnglishNot measured1216Only GPT-5 Mini measured
LMArena Vision: ChineseNot measured1214Only GPT-5 Mini measured
LMArena Vision: reading textNot measured1199Only GPT-5 Mini measured
LMArena Vision: humorNot measured1205Only GPT-5 Mini measured
LMArena Vision: captioningNot measured1217Only GPT-5 Mini measured
LMArena Vision: recognizing thingsNot measured1226Only GPT-5 Mini measured
LMArena Vision: creative writingNot measured1181Only GPT-5 Mini measured
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 DeepSeek V3.2 Exp and GPT-5 Mini
BenchmarkDeepSeek V3.2 ExpGPT-5 MiniLeader
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

DeepSeek V3.2 Exp$0.0005Fits in one request
GPT-5 Mini$0.0013Fits in one request

DeepSeek V3.2 Exp costs less

Repository review

50K input + 3K output tokens

DeepSeek V3.2 Exp$0.015Fits in one request
GPT-5 Mini$0.018Fits in one request

DeepSeek V3.2 Exp costs less

Agent loop

200K input + 10K output tokens

DeepSeek V3.2 Exp$0.058Exceeds the context window
GPT-5 Mini$0.070Fits in one request

DeepSeek V3.2 Exp 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 DeepSeek V3.2 Exp and GPT-5 Mini
SpecificationDeepSeek V3.2 ExpOpenAI GPT-5 Mini
MakerDeepSeekOpenAI
WeightsOpen weightsNo public weights listed
ReleasedSeptember 29, 2025August 7, 2025
Context window164K400K
Input $/Mtok$0.27$0.25
Output $/Mtok$0.41$2.00
Coding index55.059.8
Independent measurements behind it21
Cost per solved taskNot computable$0.08
SourceOpenRouter listingOpenRouter listing

Questions

Is DeepSeek V3.2 Exp better than GPT-5 Mini for coding?

Pick GPT-5 Mini for coding: it scores 59.8 on the Vibe Coding Index against 55.0 for DeepSeek V3.2 Exp, though on 1 benchmark against 2. Pick DeepSeek V3.2 Exp when output tokens cost 4.9x less, or when what matters is LMArena Text: coding or LMArena Text: software and IT, where it leads.

Which is cheaper, DeepSeek V3.2 Exp or GPT-5 Mini?

DeepSeek V3.2 Exp costs $0.27 per million input tokens and $0.41 per million output tokens; GPT-5 Mini costs $0.25 and $2.00. Cost per solved task is known for GPT-5 Mini only.

Which has the bigger context window, DeepSeek V3.2 Exp or GPT-5 Mini?

GPT-5 Mini, with 400K tokens against 164K.

How many benchmarks is the DeepSeek V3.2 Exp vs GPT-5 Mini comparison based on?

51 benchmarks have a result for both models as of October 21, 2026. DeepSeek V3.2 Exp's coding index rests on 2 independent benchmarks and GPT-5 Mini's on 1. Where only one model has a result, the page says so instead of naming a winner.

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