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Gemini 3.6 Flash vs GPT-5 Mini

Gemini 3.6 Flash leads GPT-5 Mini on coding, 62.5 to 34.2 on the Vibe Coding Index, and GPT-5 Mini costs 1.9x less per output token ($2.00 vs $3.75 per million). Updated October 21, 2026; 76 benchmarks have a result for both.

Replace Gemini 3.6 Flash Replace GPT-5 Mini
Gemini 3.6 FlashGoogle
Coding
62.5
Overall
68.3
Output $/M
$3.75
74
GPT-5 MiniOpenAI
Coding
34.2
Overall
43.7
Output $/M
$2.00
2
vs boards won of 76 shared

Gemini 3.6 Flash or GPT-5 Mini: which to pick

Pick Gemini 3.6 Flash for coding: it scores 62.5 on the Vibe Coding Index against 34.2 for GPT-5 Mini.

Pick GPT-5 Mini for output tokens 1.9x cheaper ($2.00 vs $3.75 per million) and a lower cost per solved task ($0.08 against $1.49).

Model AGemini 3.6 FlashGoogle62.5/1004 independent benchmarks$1.49 per solved taskModel BGPT-5 MiniOpenAI34.2/1002 independent benchmarks$0.08 per solved task
Shared results
76
Gemini 3.6 Flash only
33
GPT-5 Mini only
25
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
Gemini 3.6 Flash 62.5 from 4 benchmarks, GPT-5 Mini 34.2 from 2 benchmarks.
Widest category
Web design, 21.9 points apart on average over 7 shared benchmarks.
Widest single gap
ARC-AGI-2: Gemini 3.6 Flash 60.4% against GPT-5 Mini 4.4%, 56.0 points apart on a 0 to 100 scale.
Output price
Gemini 3.6 Flash $3.75 against GPT-5 Mini $2.00 per million output tokens, 1.9x apart.
Context window
Gemini 3.6 Flash takes 1.05M 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
CategoryGemini 3.6 FlashBarsGPT-5 MiniTies
Coding70
Intelligence20
Reasoning140
Math60
Knowledge111
Web design70
General271
All shared boards742
CodingLike-for-likeSix of these boards feed the Vibe Coding Index70
Coding benchmarks for Gemini 3.6 Flash and GPT-5 Mini
BenchmarkGemini 3.6 FlashGPT-5 MiniLeader
SWE-bench VerifiedNot measured59.8%Only GPT-5 Mini measured
SWE-bench MultilingualNot measured39.7%Only GPT-5 Mini measured
LMArena WebDev1538Not measuredOnly Gemini 3.6 Flash measured
AA Coding Index69.2Not measuredOnly Gemini 3.6 Flash measured
LiveCodeBench (Vals AI)88.1%86.6%Gemini 3.6 Flash
SWE-bench Verified (Vals AI)79.6%60.8%Gemini 3.6 Flash
Vibe Code Bench (Vals AI)64.0%14.2%Gemini 3.6 Flash
Code migration (Vals AI)30.9%Not measuredOnly Gemini 3.6 Flash measured
ProgramBench (Vals AI)0.0%Not measuredOnly Gemini 3.6 Flash measured
IOI (Vals AI)35.1%Not measuredOnly Gemini 3.6 Flash measured
Terminal-Bench 2.1 (Vals AI)73.8%Not measuredOnly Gemini 3.6 Flash measured
CyberBench (Vals AI)45.4%Not measuredOnly Gemini 3.6 Flash measured
LiveCodeBench (Artificial Analysis run)Not measured83.8%Only GPT-5 Mini measured
SciCode53.4%39.0%Gemini 3.6 Flash
Terminal-Bench Hard (Artificial Analysis run)Not measured33.3%Only GPT-5 Mini measured
Terminal-BenchNot measured34.8%Only GPT-5 Mini measured
FrontierCode34.4%Not measuredOnly Gemini 3.6 Flash measured
WeirdML56.1%52.7%Gemini 3.6 Flash
ALE-Bench715.5Not measuredOnly Gemini 3.6 Flash measured
LMArena Text: coding14911406Gemini 3.6 Flash
LMArena Text: software and IT14921394Gemini 3.6 Flash
LMArena WebDev: React1528Not measuredOnly Gemini 3.6 Flash measured
LMArena WebDev: HTML1547Not measuredOnly Gemini 3.6 Flash measured
LMArena WebDev: from an image1545Not measuredOnly Gemini 3.6 Flash measured
SciCode10.8%Not measuredOnly Gemini 3.6 Flash measured
Neither model has a result on the other 14 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Gemini 3.6 Flash and GPT-5 Mini
BenchmarkGemini 3.6 FlashGPT-5 MiniLeader
AA Intelligence Index34.020.6Gemini 3.6 Flash
Epoch Capabilities Index154.5145.3Gemini 3.6 Flash
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index19 boards, none shared
Agentic work benchmarks for Gemini 3.6 Flash and GPT-5 Mini
BenchmarkGemini 3.6 FlashGPT-5 MiniLeader
AA Agentic Index29.0Not measuredOnly Gemini 3.6 Flash measured
Design Arena: agents building web apps1197Not measuredOnly Gemini 3.6 Flash measured
Design Arena: agents building full-stack apps1181Not measuredOnly Gemini 3.6 Flash measured
Design Arena: agents building mobile apps1199Not measuredOnly Gemini 3.6 Flash measured
Design Arena: agents building Android apps1203Not measuredOnly Gemini 3.6 Flash measured
Design Arena: agents building games1181Not measuredOnly Gemini 3.6 Flash measured
Design Arena: HTML slides1148Not measuredOnly Gemini 3.6 Flash measured
Design Arena: PowerPoint slides1146Not measuredOnly Gemini 3.6 Flash measured
Design Arena: spreadsheets1034Not measuredOnly Gemini 3.6 Flash measured
Finance Agent (Vals AI)56.3%Not measuredOnly Gemini 3.6 Flash measured
Tax Agent Bench (Vals AI)18.0%Not measuredOnly Gemini 3.6 Flash measured
Legal Research Bench (Vals AI)25.0%Not measuredOnly Gemini 3.6 Flash measured
Excel Modeling Benchmark (Vals AI)65.4%Not measuredOnly Gemini 3.6 Flash measured
BioMysteryBench (Vals AI)58.5%Not measuredOnly Gemini 3.6 Flash measured
Terminal-Bench-Science (Vals AI)4.3%Not measuredOnly Gemini 3.6 Flash measured
τ²-Bench TelecomNot measured71.1%Only GPT-5 Mini measured
APEX-Agents46.9%Not measuredOnly Gemini 3.6 Flash measured
Vending-Bench 2Not measured-$31Only GPT-5 Mini measured
Berkeley Function Calling Leaderboard (BFCL)Not measured55.5%Only GPT-5 Mini measured
Neither model has a result on the other 22 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index140
Reasoning benchmarks for Gemini 3.6 Flash and GPT-5 Mini
BenchmarkGemini 3.6 FlashGPT-5 MiniLeader
GPQA Diamond93.4%80.3%Gemini 3.6 Flash
MMMU Pro (Vals AI)88.4%78.9%Gemini 3.6 Flash
GPQA Diamond (Artificial Analysis run)92.8%82.8%Gemini 3.6 Flash
Humanity's Last Exam (Artificial Analysis run)40.8%21.5%Gemini 3.6 Flash
GPQA Diamond (Epoch AI run)94.1%75.0%Gemini 3.6 Flash
ARC-AGI91.2%54.3%Gemini 3.6 Flash
ARC-AGI-260.4%4.4%Gemini 3.6 Flash
Chess puzzles42.0%24.0%Gemini 3.6 Flash
Mystery game puzzles30.0%10.0%Gemini 3.6 Flash
VPCTNot measured40.2%Only GPT-5 Mini measured
LMArena Text: hard prompts14861380Gemini 3.6 Flash
LMArena Text: expert14901379Gemini 3.6 Flash
LMArena Text: hard prompts in English14841383Gemini 3.6 Flash
LMArena Vision: diagrams13141202Gemini 3.6 Flash
LMArena Vision: homework13141210Gemini 3.6 Flash
Kagi LLM BenchmarkNot measured70.3%Only 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 index60
Math benchmarks for Gemini 3.6 Flash and GPT-5 Mini
BenchmarkGemini 3.6 FlashGPT-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 IndexNot measured90.7Only GPT-5 Mini measured
AIME 2025 (Artificial Analysis run)Not measured90.7%Only GPT-5 Mini measured
OTIS Mock AIME94.2%86.7%Gemini 3.6 Flash
FrontierMath, tiers 1 to 358.9%46.7%Gemini 3.6 Flash
FrontierMath, tier 422.0%12.2%Gemini 3.6 Flash
ProofBench36.0%9.0%Gemini 3.6 Flash
MATH level 5Not measured97.8%Only GPT-5 Mini measured
LMArena Text: math15081378Gemini 3.6 Flash
LMArena Text: mathematical work14921380Gemini 3.6 Flash
Neither model has a result on the other 1 board here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index111
Knowledge benchmarks for Gemini 3.6 Flash and GPT-5 Mini
BenchmarkGemini 3.6 FlashGPT-5 MiniLeader
MMLU Pro89.3%82.2%Gemini 3.6 Flash
LegalBench (Vals AI)86.7%81.8%Gemini 3.6 Flash
CaseLaw (Vals AI)Not measured68.5%Only GPT-5 Mini measured
CorpFin (Vals AI)63.3%60.2%Gemini 3.6 Flash
TaxEval (Vals AI)74.9%75.2%GPT-5 Mini
MortgageTax (Vals AI)67.6%66.9%Gemini 3.6 Flash
MedQA (Vals AI)Not measured96.1%Only GPT-5 Mini measured
MedCode (Vals AI)53.1%43.0%Gemini 3.6 Flash
MMLU Pro (Artificial Analysis run)Not measured83.7%Only GPT-5 Mini measured
SimpleQA Verified66.2%21.6%Gemini 3.6 Flash
LMArena Text: science14891371Gemini 3.6 Flash
LMArena Text: medicine and healthcare14691380Gemini 3.6 Flash
LMArena Text: legal and government14791375Gemini 3.6 Flash
LMArena Text: business and finance14641358Gemini 3.6 Flash
FACTS Benchmark Suite65.3%38.6%Gemini 3.6 Flash
Neither model has a result on the other 3 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index70
Web design benchmarks for Gemini 3.6 Flash and GPT-5 Mini
BenchmarkGemini 3.6 FlashGPT-5 MiniLeader
Design Arena: websites13001125Gemini 3.6 Flash
Design Arena: UI components12971106Gemini 3.6 Flash
Design Arena: game dev12631130Gemini 3.6 Flash
Design Arena: data viz12891130Gemini 3.6 Flash
Design Arena: 3D12721037Gemini 3.6 Flash
Design Arena: all code categories12901115Gemini 3.6 Flash
Design Arena: SVGNot measured1091Only GPT-5 Mini measured
Design Arena: ASCII art12811125Gemini 3.6 Flash
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index271
General benchmarks for Gemini 3.6 Flash and GPT-5 Mini
BenchmarkGemini 3.6 FlashGPT-5 MiniLeader
Public Benefits Bench (Vals AI)56.6%Not measuredOnly Gemini 3.6 Flash measured
SAGE (Vals AI)48.7%43.0%Gemini 3.6 Flash
MedScribe (Vals AI)79.7%80.6%GPT-5 Mini
Vals Multimodal Index65.1%Not measuredOnly Gemini 3.6 Flash measured
IFBenchNot measured75.4%Only GPT-5 Mini measured
Long context reasoning (AA-LCR)80.0%72.3%Gemini 3.6 Flash
DTBench95.5%80.5%Gemini 3.6 Flash
LMCA44.9%34.2%Gemini 3.6 Flash
Fiction.LiveBenchNot measured69.4%Only GPT-5 Mini measured
Creative writing (Lech Mazur)Not measured83.1%Only GPT-5 Mini measured
Furniture assembly23.3%Not measuredOnly Gemini 3.6 Flash measured
LMArena Text14801373Gemini 3.6 Flash
LMArena Text: instruction following14671357Gemini 3.6 Flash
LMArena Text: creative writing14661325Gemini 3.6 Flash
LMArena Vision12991202Gemini 3.6 Flash
LMArena Text: English14821379Gemini 3.6 Flash
LMArena Text: non-English14701363Gemini 3.6 Flash
LMArena Text: Chinese15311386Gemini 3.6 Flash
LMArena Text: German14801366Gemini 3.6 Flash
LMArena Text: Japanese14751341Gemini 3.6 Flash
LMArena Text: Korean14291308Gemini 3.6 Flash
LMArena Text: French15031386Gemini 3.6 Flash
LMArena Text: Spanish14761354Gemini 3.6 Flash
LMArena Text: Russian14881362Gemini 3.6 Flash
LMArena Text: Polish14731378Gemini 3.6 Flash
LMArena Text: multi-turn14811363Gemini 3.6 Flash
LMArena Text: longer queries14751355Gemini 3.6 Flash
LMArena Text: writing and language14701344Gemini 3.6 Flash
LMArena Text: entertainment and media14561340Gemini 3.6 Flash
LMArena Vision: English12951216Gemini 3.6 Flash
LMArena Vision: Chinese13571214Gemini 3.6 Flash
LMArena Vision: reading text13121199Gemini 3.6 Flash
LMArena Vision: humor12891205Gemini 3.6 Flash
LMArena Vision: captioningNot measured1217Only GPT-5 Mini measured
LMArena Vision: recognizing thingsNot measured1226Only GPT-5 Mini measured
LMArena Vision: creative writing12781181Gemini 3.6 Flash
LMArena Document1456Not measuredOnly Gemini 3.6 Flash measured
Neither model has a result on the other 9 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Gemini 3.6 Flash and GPT-5 Mini
BenchmarkGemini 3.6 FlashGPT-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

Gemini 3.6 Flash$0.0026Fits in one request
GPT-5 Mini$0.0013Fits in one request

GPT-5 Mini costs less

Repository review

50K input + 3K output tokens

Gemini 3.6 Flash$0.049Fits in one request
GPT-5 Mini$0.018Fits in one request

GPT-5 Mini costs less

Agent loop

200K input + 10K output tokens

Gemini 3.6 Flash$0.188Fits in one request
GPT-5 Mini$0.070Fits in one request

GPT-5 Mini 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 Gemini 3.6 Flash and GPT-5 Mini
SpecificationGoogle Gemini 3.6 FlashOpenAI GPT-5 Mini
MakerGoogleOpenAI
WeightsNo public weights listedNo public weights listed
ReleasedJuly 21, 2026August 7, 2025
Context window1.05M400K
Input $/Mtok$0.75$0.25
Output $/Mtok$3.75$2.00
Coding index62.534.2
Independent measurements behind it42
Cost per solved task$1.49$0.08
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemini 3.6 Flash better than GPT-5 Mini for coding?

Pick Gemini 3.6 Flash for coding: it scores 62.5 on the Vibe Coding Index against 34.2 for GPT-5 Mini. Pick GPT-5 Mini for output tokens 1.9x cheaper ($2.00 vs $3.75 per million) and a lower cost per solved task ($0.08 against $1.49).

Which is cheaper, Gemini 3.6 Flash or GPT-5 Mini?

Gemini 3.6 Flash costs $0.75 per million input tokens and $3.75 per million output tokens; GPT-5 Mini costs $0.25 and $2.00. Per solved SWE-bench Verified task, Gemini 3.6 Flash costs $1.49 and GPT-5 Mini $0.08.

Which has the bigger context window, Gemini 3.6 Flash or GPT-5 Mini?

Gemini 3.6 Flash, with 1.05M tokens against 400K.

How many benchmarks is the Gemini 3.6 Flash vs GPT-5 Mini comparison based on?

76 benchmarks have a result for both models as of October 21, 2026. Gemini 3.6 Flash's coding index rests on 4 independent benchmarks and GPT-5 Mini's on 2. 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/gemini-3-6-flash-vs-gpt-5-mini">LLMBenchmark.ai, Gemini 3.6 Flash vs GPT-5 Mini</a></p>