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Gemini 2.5 Pro vs GPT-5 Mini

GPT-5 Mini leads Gemini 2.5 Pro on coding, 34.2 to 19.1 on the Vibe Coding Index, and GPT-5 Mini costs 5.0x less per output token ($2.00 vs $10.00 per million). Updated October 22, 2026; 80 benchmarks have a result for both.

Replace Gemini 2.5 Pro Replace GPT-5 Mini
Gemini 2.5 ProGoogle
Coding
19.1
Overall
41.8
Output $/M
$10.00
58
GPT-5 MiniOpenAI
Coding
34.2
Overall
43.7
Output $/M
$2.00
21
vs boards won of 80 shared, 1 tied

Gemini 2.5 Pro or GPT-5 Mini: which to pick

Pick GPT-5 Mini for coding: it scores 34.2 on the Vibe Coding Index against 19.1 for Gemini 2.5 Pro, though on 2 benchmarks against 3.

Pick Gemini 2.5 Pro for a larger context window (1.05M against 400K tokens) and work measured by SciCode or WeirdML, where it leads.

Model AGemini 2.5 ProGoogle19.1/1003 independent benchmarks$0.64 per solved taskModel BGPT-5 MiniOpenAI34.2/1002 independent benchmarks$0.08 per solved task
Shared results
80
Gemini 2.5 Pro only
10
GPT-5 Mini only
21
Like-for-like categories
8 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 2.5 Pro 19.1 from 3 benchmarks, GPT-5 Mini 34.2 from 2 benchmarks.
Widest category
General, 13.3 points apart on average over 32 shared benchmarks.
Widest single gap
IFBench: Gemini 2.5 Pro 48.7% against GPT-5 Mini 75.4%, 26.7 points apart on a 0 to 100 scale.
Output price
Gemini 2.5 Pro $10.00 against GPT-5 Mini $2.00 per million output tokens, 5.0x apart.
Context window
Gemini 2.5 Pro 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 2.5 ProBarsGPT-5 MiniTies
Coding46
Intelligence02
Agentic work11
Reasoning911 tie
Math25
Knowledge91
Web design51
General284
All shared boards58211 tie
CodingLike-for-likeSix of these boards feed the Vibe Coding Index46
Coding benchmarks for Gemini 2.5 Pro and GPT-5 Mini
BenchmarkGemini 2.5 ProGPT-5 MiniLeader
SWE-bench Verified53.6%59.8%GPT-5 Mini
SWE-bench MultilingualNot measured39.7%Only GPT-5 Mini measured
LMArena WebDev1226Not measuredOnly Gemini 2.5 Pro measured
AA Coding Index33.3Not measuredOnly Gemini 2.5 Pro measured
LiveCodeBench (Vals AI)Not measured86.6%Only GPT-5 Mini measured
SWE-bench Verified (Vals AI)54.4%60.8%GPT-5 Mini
Vibe Code Bench (Vals AI)0.4%14.2%GPT-5 Mini
LiveCodeBench (Artificial Analysis run)80.1%83.8%GPT-5 Mini
SciCode46.3%39.0%Gemini 2.5 Pro
Terminal-Bench Hard (Artificial Analysis run)26.5%33.3%GPT-5 Mini
Terminal-Bench32.6%34.8%GPT-5 Mini
GSO-Bench3.9%Not measuredOnly Gemini 2.5 Pro measured
WeirdML54.0%52.7%Gemini 2.5 Pro
LMArena Text: coding14521406Gemini 2.5 Pro
LMArena Text: software and IT14591394Gemini 2.5 Pro
LMArena WebDev: HTML1235Not measuredOnly Gemini 2.5 Pro measured
LMArena WebDev: from an image1285Not measuredOnly Gemini 2.5 Pro measured
Neither model has a result on the other 22 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
Intelligence benchmarks for Gemini 2.5 Pro and GPT-5 Mini
BenchmarkGemini 2.5 ProGPT-5 MiniLeader
AA Intelligence Index16.120.6GPT-5 Mini
Epoch Capabilities Index145.1145.3GPT-5 Mini
Agentic workLike-for-likePublic boards, shown as published, kept out of the index11
Agentic work benchmarks for Gemini 2.5 Pro and GPT-5 Mini
BenchmarkGemini 2.5 ProGPT-5 MiniLeader
AA Agentic Index1.6Not measuredOnly Gemini 2.5 Pro measured
τ²-Bench Telecom54.1%71.1%GPT-5 Mini
GDPval23.3%Not measuredOnly Gemini 2.5 Pro measured
DeepResearch Bench41.5%Not measuredOnly Gemini 2.5 Pro measured
Vending-Bench 2$574-$31Gemini 2.5 Pro
Berkeley Function Calling Leaderboard (BFCL)Not measured55.5%Only GPT-5 Mini measured
BrowseComp-Plus29.5%Not measuredOnly Gemini 2.5 Pro measured
Neither model has a result on the other 34 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index91
Reasoning benchmarks for Gemini 2.5 Pro and GPT-5 Mini
BenchmarkGemini 2.5 ProGPT-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)84.4%82.8%Gemini 2.5 Pro
Humanity's Last Exam (Artificial Analysis run)22.5%21.5%Gemini 2.5 Pro
GPQA Diamond (Epoch AI run)85.3%75.0%Gemini 2.5 Pro
ARC-AGI41.0%54.3%GPT-5 Mini
ARC-AGI-24.9%4.4%Gemini 2.5 Pro
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 prompts14551380Gemini 2.5 Pro
LMArena Text: expert14521379Gemini 2.5 Pro
LMArena Text: hard prompts in English14531383Gemini 2.5 Pro
LMArena Vision: diagrams12741202Gemini 2.5 Pro
LMArena Vision: homework12811210Gemini 2.5 Pro
Kagi LLM Benchmark70.3%70.3%Tie
Neither model has a result on the other 6 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index25
Math benchmarks for Gemini 2.5 Pro and GPT-5 Mini
BenchmarkGemini 2.5 ProGPT-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 AIME84.7%86.7%GPT-5 Mini
FrontierMath, tiers 1 to 324.6%46.7%GPT-5 Mini
FrontierMath, tier 40.0%12.2%GPT-5 Mini
ProofBenchNot measured9.0%Only GPT-5 Mini measured
MATH level 5Not measured97.8%Only GPT-5 Mini measured
LMArena Text: math14501378Gemini 2.5 Pro
LMArena Text: mathematical work14541380Gemini 2.5 Pro
Neither model has a result on the other 1 board here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index91
Knowledge benchmarks for Gemini 2.5 Pro and GPT-5 Mini
BenchmarkGemini 2.5 ProGPT-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)63.9%68.5%GPT-5 Mini
CorpFin (Vals AI)60.8%60.2%Gemini 2.5 Pro
TaxEval (Vals AI)Not measured75.2%Only GPT-5 Mini measured
MortgageTax (Vals AI)68.9%66.9%Gemini 2.5 Pro
MedQA (Vals AI)Not measured96.1%Only GPT-5 Mini measured
MedCode (Vals AI)50.6%43.0%Gemini 2.5 Pro
MMLU Pro (Artificial Analysis run)86.2%83.7%Gemini 2.5 Pro
SimpleQA VerifiedNot measured21.6%Only GPT-5 Mini measured
LMArena Text: science14801371Gemini 2.5 Pro
LMArena Text: medicine and healthcare14761380Gemini 2.5 Pro
LMArena Text: legal and government14801375Gemini 2.5 Pro
LMArena Text: business and finance14391358Gemini 2.5 Pro
FACTS Benchmark Suite61.5%38.6%Gemini 2.5 Pro
Neither model has a result on the other 3 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index51
Web design benchmarks for Gemini 2.5 Pro and GPT-5 Mini
BenchmarkGemini 2.5 ProGPT-5 MiniLeader
Design Arena: websites11671125Gemini 2.5 Pro
Design Arena: UI components11371103Gemini 2.5 Pro
Design Arena: game dev11111129GPT-5 Mini
Design Arena: data viz12221131Gemini 2.5 Pro
Design Arena: 3D10801036Gemini 2.5 Pro
Design Arena: all code categories11521114Gemini 2.5 Pro
Design Arena: SVGNot measured1091Only GPT-5 Mini measured
Design Arena: ASCII artNot measured1125Only 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 index284
General benchmarks for Gemini 2.5 Pro and GPT-5 Mini
BenchmarkGemini 2.5 ProGPT-5 MiniLeader
SAGE (Vals AI)41.9%43.0%GPT-5 Mini
MedScribe (Vals AI)73.5%80.6%GPT-5 Mini
IFBench48.7%75.4%GPT-5 Mini
Long context reasoning (AA-LCR)69.0%72.3%GPT-5 Mini
DTBench82.4%80.5%Gemini 2.5 Pro
LMCA34.8%34.2%Gemini 2.5 Pro
Fiction.LiveBenchNot measured69.4%Only GPT-5 Mini measured
Creative writing (Lech Mazur)83.8%83.1%Gemini 2.5 Pro
LMArena Text14581373Gemini 2.5 Pro
LMArena Text: instruction following14371357Gemini 2.5 Pro
LMArena Text: creative writing14541325Gemini 2.5 Pro
LMArena Vision12631202Gemini 2.5 Pro
LMArena Text: English14581379Gemini 2.5 Pro
LMArena Text: non-English14521363Gemini 2.5 Pro
LMArena Text: Chinese15071386Gemini 2.5 Pro
LMArena Text: German14871366Gemini 2.5 Pro
LMArena Text: Japanese14611341Gemini 2.5 Pro
LMArena Text: Korean14341308Gemini 2.5 Pro
LMArena Text: French14731386Gemini 2.5 Pro
LMArena Text: Spanish14741354Gemini 2.5 Pro
LMArena Text: Russian14611362Gemini 2.5 Pro
LMArena Text: Polish14791378Gemini 2.5 Pro
LMArena Text: multi-turn14531363Gemini 2.5 Pro
LMArena Text: longer queries14491355Gemini 2.5 Pro
LMArena Text: writing and language14541344Gemini 2.5 Pro
LMArena Text: entertainment and media14411340Gemini 2.5 Pro
LMArena Vision: English12611216Gemini 2.5 Pro
LMArena Vision: Chinese13001214Gemini 2.5 Pro
LMArena Vision: reading text12701199Gemini 2.5 Pro
LMArena Vision: humor12621205Gemini 2.5 Pro
LMArena Vision: captioning13041217Gemini 2.5 Pro
LMArena Vision: recognizing things12831226Gemini 2.5 Pro
LMArena Vision: creative writing12651181Gemini 2.5 Pro
LMArena Document1421Not measuredOnly Gemini 2.5 Pro measured
Neither model has a result on the other 12 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Gemini 2.5 Pro and GPT-5 Mini
BenchmarkGemini 2.5 ProGPT-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 2.5 Pro$0.0063Fits in one request
GPT-5 Mini$0.0013Fits in one request

GPT-5 Mini costs less

Repository review

50K input + 3K output tokens

Gemini 2.5 Pro$0.092Fits in one request
GPT-5 Mini$0.018Fits in one request

GPT-5 Mini costs less

Agent loop

200K input + 10K output tokens

Gemini 2.5 Pro$0.350Fits 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 2.5 Pro and GPT-5 Mini
SpecificationGoogle Gemini 2.5 ProOpenAI GPT-5 Mini
MakerGoogleOpenAI
WeightsNo public weights listedNo public weights listed
ReleasedJune 17, 2025August 7, 2025
Context window1.05M400K
Input $/Mtok$1.25$0.25
Output $/Mtok$10.00$2.00
Coding index19.134.2
Independent measurements behind it32
Cost per solved task$0.64$0.08
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemini 2.5 Pro better than GPT-5 Mini for coding?

Pick GPT-5 Mini for coding: it scores 34.2 on the Vibe Coding Index against 19.1 for Gemini 2.5 Pro, though on 2 benchmarks against 3. Pick Gemini 2.5 Pro for a larger context window (1.05M against 400K tokens) and work measured by SciCode or WeirdML, where it leads.

Which is cheaper, Gemini 2.5 Pro or GPT-5 Mini?

Gemini 2.5 Pro costs $1.25 per million input tokens and $10.00 per million output tokens; GPT-5 Mini costs $0.25 and $2.00. Per solved SWE-bench Verified task, Gemini 2.5 Pro costs $0.64 and GPT-5 Mini $0.08.

Which has the bigger context window, Gemini 2.5 Pro or GPT-5 Mini?

Gemini 2.5 Pro, with 1.05M tokens against 400K.

How many benchmarks is the Gemini 2.5 Pro vs GPT-5 Mini comparison based on?

80 benchmarks have a result for both models as of October 22, 2026. Gemini 2.5 Pro's coding index rests on 3 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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