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Gemini 2.5 Pro vs GPT-5.4

GPT-5.4 leads Gemini 2.5 Pro on coding, 64.4 to 19.1 on the Vibe Coding Index, and Gemini 2.5 Pro costs 1.5x less per output token ($10.00 vs $15.00 per million). Updated October 22, 2026; 78 benchmarks have a result for both.

Replace Gemini 2.5 Pro Replace GPT-5.4
Gemini 2.5 ProGoogle
Coding
19.1
Overall
41.8
Output $/M
$10.00
15
GPT-5.4OpenAI
Coding
64.4
Overall
69.6
Output $/M
$15.00
63
vs boards won of 78 shared

Gemini 2.5 Pro or GPT-5.4: which to pick

Pick GPT-5.4 for coding: it scores 64.4 on the Vibe Coding Index against 19.1 for Gemini 2.5 Pro.

Pick Gemini 2.5 Pro for output tokens 1.5x cheaper ($10.00 vs $15.00 per million) and a lower cost per solved task ($0.64 against $1.02).

Model AGemini 2.5 ProGoogle19.1/1003 independent benchmarks$0.64 per solved taskModel BGPT-5.4OpenAI64.4/1003 independent benchmarks$1.02 per solved task
Shared results
78
Gemini 2.5 Pro only
12
GPT-5.4 only
32
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-5.4 64.4 from 3 benchmarks.
Widest category
Coding, 31.0 points apart on average over 12 shared benchmarks.
Widest single gap
ARC-AGI-2: Gemini 2.5 Pro 4.9% against GPT-5.4 74.0%, 69.1 points apart on a 0 to 100 scale.
Output price
Gemini 2.5 Pro $10.00 against GPT-5.4 $15.00 per million output tokens, 1.5x apart.
Context window
Gemini 2.5 Pro takes 1.05M tokens, GPT-5.4 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
CategoryGemini 2.5 ProBarsGPT-5.4Ties
Coding012
Intelligence02
Agentic work12
Reasoning110
Math05
Knowledge53
Web design24
General625
All shared boards1563
CodingLike-for-likeSix of these boards feed the Vibe Coding Index012
Coding benchmarks for Gemini 2.5 Pro and GPT-5.4
BenchmarkGemini 2.5 ProGPT-5.4Leader
SWE-bench Verified53.6%Not measuredOnly Gemini 2.5 Pro measured
LMArena WebDev12261464GPT-5.4
AA Coding Index33.371.1GPT-5.4
LiveCodeBench (Vals AI)Not measured84.1%Only GPT-5.4 measured
SWE-bench Verified (Vals AI)54.4%78.2%GPT-5.4
Vibe Code Bench (Vals AI)0.4%67.4%GPT-5.4
Code migration (Vals AI)Not measured35.0%Only GPT-5.4 measured
ProgramBench (Vals AI)Not measured0.5%Only GPT-5.4 measured
SkillsBench (Vals AI)Not measured51.7%Only GPT-5.4 measured
LiveCodeBench (Artificial Analysis run)80.1%Not measuredOnly Gemini 2.5 Pro measured
SciCode46.3%Not measuredOnly Gemini 2.5 Pro measured
Terminal-Bench Hard (Artificial Analysis run)26.5%57.6%GPT-5.4
Terminal-Bench32.6%81.8%GPT-5.4
GSO-Bench3.9%31.4%GPT-5.4
WeirdML54.0%77.7%GPT-5.4
MirrorCodeNot measured15.6%Only GPT-5.4 measured
ALE-BenchNot measured1607.0Only GPT-5.4 measured
LMArena Text: coding14521496GPT-5.4
LMArena Text: software and IT14591491GPT-5.4
LMArena WebDev: ReactNot measured1454Only GPT-5.4 measured
LMArena WebDev: HTML12351478GPT-5.4
LMArena WebDev: from an image12851436GPT-5.4
Neither model has a result on the other 17 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
Intelligence benchmarks for Gemini 2.5 Pro and GPT-5.4
BenchmarkGemini 2.5 ProGPT-5.4Leader
AA Intelligence Index16.139.0GPT-5.4
Epoch Capabilities Index145.1157.3GPT-5.4
Agentic workLike-for-likePublic boards, shown as published, kept out of the index12
Agentic work benchmarks for Gemini 2.5 Pro and GPT-5.4
BenchmarkGemini 2.5 ProGPT-5.4Leader
AA Agentic Index1.6Not measuredOnly Gemini 2.5 Pro measured
Design Arena: agents building web appsNot measured1059Only GPT-5.4 measured
Design Arena: agents building full-stack appsNot measured1017Only GPT-5.4 measured
Design Arena: agents building mobile appsNot measured1087Only GPT-5.4 measured
Design Arena: agents building Android appsNot measured1031Only GPT-5.4 measured
Design Arena: agents building Godot gamesNot measured1135Only GPT-5.4 measured
τ²-Bench Telecom54.1%87.1%GPT-5.4
APEX-AgentsNot measured52.4%Only GPT-5.4 measured
METR time horizonsNot measured74.3%Only GPT-5.4 measured
GDPval23.3%Not measuredOnly Gemini 2.5 Pro measured
DeepResearch Bench41.5%35.1%Gemini 2.5 Pro
PostTrainBenchNot measured19.0%Only GPT-5.4 measured
Vending-Bench 2$574$6,144GPT-5.4
BrowseComp-Plus29.5%Not measuredOnly Gemini 2.5 Pro measured
Neither model has a result on the other 27 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index110
Reasoning benchmarks for Gemini 2.5 Pro and GPT-5.4
BenchmarkGemini 2.5 ProGPT-5.4Leader
GPQA DiamondNot measured91.7%Only GPT-5.4 measured
MMMU Pro (Vals AI)Not measured87.5%Only GPT-5.4 measured
GPQA Diamond (Artificial Analysis run)84.4%92.0%GPT-5.4
Humanity's Last Exam (Artificial Analysis run)22.5%43.7%GPT-5.4
GPQA Diamond (Epoch AI run)85.3%93.3%GPT-5.4
ARC-AGI41.0%93.7%GPT-5.4
ARC-AGI-24.9%74.0%GPT-5.4
Chess puzzlesNot measured48.0%Only GPT-5.4 measured
Mystery game puzzlesNot measured37.0%Only GPT-5.4 measured
EBR-benchNot measured25.4%Only GPT-5.4 measured
LMArena Text: hard prompts14551485GPT-5.4
LMArena Text: expert14521507GPT-5.4
LMArena Text: hard prompts in English14531479GPT-5.4
LMArena Vision: diagrams12741327GPT-5.4
LMArena Vision: homework12811336GPT-5.4
Kagi LLM Benchmark70.3%63.8%Gemini 2.5 Pro
Neither model has a result on the other 6 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index05
Math benchmarks for Gemini 2.5 Pro and GPT-5.4
BenchmarkGemini 2.5 ProGPT-5.4Leader
AIMENot measured96.7%Only GPT-5.4 measured
AA Math Index87.7Not measuredOnly Gemini 2.5 Pro measured
AIME 2025 (Artificial Analysis run)87.7%Not measuredOnly Gemini 2.5 Pro measured
OTIS Mock AIME84.7%97.8%GPT-5.4
FrontierMath, tiers 1 to 324.6%78.6%GPT-5.4
FrontierMath, tier 40.0%49.0%GPT-5.4
ProofBenchNot measured56.0%Only GPT-5.4 measured
LMArena Text: math14501488GPT-5.4
LMArena Text: mathematical work14541497GPT-5.4
Neither model has a result on the other 4 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index53
Knowledge benchmarks for Gemini 2.5 Pro and GPT-5.4
BenchmarkGemini 2.5 ProGPT-5.4Leader
MMLU ProNot measured87.5%Only GPT-5.4 measured
LegalBench (Vals AI)Not measured86.0%Only GPT-5.4 measured
CaseLaw (Vals AI)63.9%63.8%Gemini 2.5 Pro
CorpFin (Vals AI)60.8%65.3%GPT-5.4
TaxEval (Vals AI)Not measured74.0%Only GPT-5.4 measured
MortgageTax (Vals AI)68.9%68.3%Gemini 2.5 Pro
MedQA (Vals AI)Not measured96.1%Only GPT-5.4 measured
MedCode (Vals AI)50.6%41.3%Gemini 2.5 Pro
MMLU Pro (Artificial Analysis run)86.2%Not measuredOnly Gemini 2.5 Pro measured
SimpleQA VerifiedNot measured45.1%Only GPT-5.4 measured
LMArena Text: science14801479Gemini 2.5 Pro
LMArena Text: medicine and healthcare14761458Gemini 2.5 Pro
LMArena Text: legal and government14801486GPT-5.4
LMArena Text: business and finance14391474GPT-5.4
FACTS Benchmark Suite61.5%Not measuredOnly Gemini 2.5 Pro measured
Neither model has a result on the other 3 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index24
Web design benchmarks for Gemini 2.5 Pro and GPT-5.4
BenchmarkGemini 2.5 ProGPT-5.4Leader
Design Arena: websites11671198GPT-5.4
Design Arena: UI components11371212GPT-5.4
Design Arena: game dev11111194GPT-5.4
Design Arena: data viz12221196Gemini 2.5 Pro
Design Arena: 3D10801065Gemini 2.5 Pro
Design Arena: all code categories11521179GPT-5.4
Design Arena: SVGNot measured1141Only GPT-5.4 measured
Design Arena: ASCII artNot measured1188Only GPT-5.4 measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index625
General benchmarks for Gemini 2.5 Pro and GPT-5.4
BenchmarkGemini 2.5 ProGPT-5.4Leader
SAGE (Vals AI)41.9%43.3%GPT-5.4
MedScribe (Vals AI)73.5%77.5%GPT-5.4
IFBench48.7%73.9%GPT-5.4
Long context reasoning (AA-LCR)69.0%82.0%GPT-5.4
DTBench82.4%94.4%GPT-5.4
LMCA34.8%52.0%GPT-5.4
Creative writing (Lech Mazur)83.8%Not measuredOnly Gemini 2.5 Pro measured
CL-benchNot measured27.9%Only GPT-5.4 measured
Furniture assemblyNot measured37.5%Only GPT-5.4 measured
CL-bench LifeNot measured21.7%Only GPT-5.4 measured
LMArena Text14581469GPT-5.4
LMArena Text: instruction following14371469GPT-5.4
LMArena Text: creative writing14541439Gemini 2.5 Pro
LMArena Vision12631303GPT-5.4
LMArena Text: English14581467GPT-5.4
LMArena Text: non-English14521465GPT-5.4
LMArena Text: Chinese15071520GPT-5.4
LMArena Text: German14871472Gemini 2.5 Pro
LMArena Text: Japanese14611485GPT-5.4
LMArena Text: Korean14341449GPT-5.4
LMArena Text: French14731493GPT-5.4
LMArena Text: Spanish14741452Gemini 2.5 Pro
LMArena Text: Russian14611480GPT-5.4
LMArena Text: Polish14791472Gemini 2.5 Pro
LMArena Text: multi-turn14531482GPT-5.4
LMArena Text: longer queries14491473GPT-5.4
LMArena Text: writing and language14541458GPT-5.4
LMArena Text: entertainment and media14411438Gemini 2.5 Pro
LMArena Vision: English12611301GPT-5.4
LMArena Vision: Chinese13001354GPT-5.4
LMArena Vision: reading text12701312GPT-5.4
LMArena Vision: humor12621284GPT-5.4
LMArena Vision: captioning1304Not measuredOnly Gemini 2.5 Pro measured
LMArena Vision: recognizing things12831251Gemini 2.5 Pro
LMArena Vision: creative writing12651283GPT-5.4
LMArena Document14211471GPT-5.4
Neither model has a result on the other 10 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-5.4
BenchmarkGemini 2.5 ProGPT-5.4Leader
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-5.4$0.010Fits in one request

Gemini 2.5 Pro costs less

Repository review

50K input + 3K output tokens

Gemini 2.5 Pro$0.092Fits in one request
GPT-5.4$0.170Fits in one request

Gemini 2.5 Pro costs less

Agent loop

200K input + 10K output tokens

Gemini 2.5 Pro$0.350Fits in one request
GPT-5.4$0.650Fits in one request

Gemini 2.5 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 Gemini 2.5 Pro and GPT-5.4
SpecificationGoogle Gemini 2.5 ProOpenAI GPT-5.4
MakerGoogleOpenAI
WeightsNo public weights listedNo public weights listed
ReleasedJune 17, 2025March 5, 2026
Context window1.05M1.05M
Input $/Mtok$1.25$2.50
Output $/Mtok$10.00$15.00
Coding index19.164.4
Independent measurements behind it33
Cost per solved task$0.64$1.02
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemini 2.5 Pro better than GPT-5.4 for coding?

Pick GPT-5.4 for coding: it scores 64.4 on the Vibe Coding Index against 19.1 for Gemini 2.5 Pro. Pick Gemini 2.5 Pro for output tokens 1.5x cheaper ($10.00 vs $15.00 per million) and a lower cost per solved task ($0.64 against $1.02).

Which is cheaper, Gemini 2.5 Pro or GPT-5.4?

Gemini 2.5 Pro costs $1.25 per million input tokens and $10.00 per million output tokens; GPT-5.4 costs $2.50 and $15.00. Per solved SWE-bench Verified task, Gemini 2.5 Pro costs $0.64 and GPT-5.4 $1.02.

Which has the bigger context window, Gemini 2.5 Pro or GPT-5.4?

GPT-5.4, with 1.05M tokens against 1.05M.

How many benchmarks is the Gemini 2.5 Pro vs GPT-5.4 comparison based on?

78 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-5.4's on 3. Where only one model has a result, the page says so instead of naming a winner.

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