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GPT-5.4 Mini vs o1

Updated October 21, 2026. 54 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace GPT-5.4 Mini Replace o1
GPT-5.4 MiniOpenAI
Coding
28.2
Overall
24.1
Output $/M
$4.50
51
o1OpenAI
Coding
61.7
Overall
15.2
Output $/M
$60.00
3
vs boards won of 54 shared

Decision reading

Pick o1 for coding: it scores 61.7 on the Vibe Coding Index against 28.2 for GPT-5.4 Mini.

Pick GPT-5.4 Mini when output tokens cost 13.3x less, or when the context window is larger, 400K against 200K tokens.

Model AGPT-5.4 MiniOpenAI28.2/1001 independent benchmark$0.70 per solved taskModel Bo1OpenAI61.7/1001 independent benchmarkNo cost per solved task
Shared results
54
GPT-5.4 Mini only
34
o1 only
14
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
GPT-5.4 Mini 28.2 from 1 benchmark, o1 61.7 from 1 benchmark.
Widest category
Coding, 20.8 points apart on average over 6 shared benchmarks.
Widest single gap
Terminal-Bench Hard (Artificial Analysis run): GPT-5.4 Mini 52.3% against o1 12.9%, 39.4 points apart on a 0 to 100 scale.
Output price
GPT-5.4 Mini $4.50 against o1 $60.00 per million output tokens, 13.3x apart.
Context window
GPT-5.4 Mini takes 400K tokens, o1 200K.

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
CategoryGPT-5.4 MiniBarso1Ties
Coding60
Intelligence20
Agentic work10
Reasoning100
Math50
Knowledge52
General221
All shared boards513
CodingLike-for-likeFour of these boards feed the Vibe Coding Index60
Coding benchmarks for GPT-5.4 Mini and o1
BenchmarkGPT-5.4 Minio1Leader
Aider polyglotNot measured61.7%Only o1 measured
LMArena WebDev1397Not measuredOnly GPT-5.4 Mini measured
AA Coding Index56.139.7GPT-5.4 Mini
LiveCodeBench (Vals AI)81.5%50.3%GPT-5.4 Mini
SWE-bench Verified (Vals AI)73.0%Not measuredOnly GPT-5.4 Mini measured
Terminal-Bench 4 (Vals AI)2.5%Not measuredOnly GPT-5.4 Mini measured
Vibe Code Bench (Vals AI)48.0%Not measuredOnly GPT-5.4 Mini measured
Code migration (Vals AI)12.9%Not measuredOnly GPT-5.4 Mini measured
ProgramBench (Vals AI)0.0%Not measuredOnly GPT-5.4 Mini measured
Terminal-Bench 2.1 (Vals AI)54.7%Not measuredOnly GPT-5.4 Mini measured
LiveCodeBench (Artificial Analysis run)Not measured67.9%Only o1 measured
SciCode52.1%Not measuredOnly GPT-5.4 Mini measured
Terminal-Bench Hard (Artificial Analysis run)52.3%12.9%GPT-5.4 Mini
FrontierCode27.0%Not measuredOnly GPT-5.4 Mini measured
WeirdML60.3%46.1%GPT-5.4 Mini
ALE-Bench1188.6Not measuredOnly GPT-5.4 Mini measured
LMArena Text: coding14381367GPT-5.4 Mini
LMArena Text: software and IT14361366GPT-5.4 Mini
LMArena WebDev: React1386Not measuredOnly GPT-5.4 Mini measured
LMArena WebDev: HTML1419Not measuredOnly GPT-5.4 Mini measured
Neither model has a result on the other 18 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for GPT-5.4 Mini and o1
BenchmarkGPT-5.4 Minio1Leader
AA Intelligence Index24.115.2GPT-5.4 Mini
Epoch Capabilities Index148.7141.7GPT-5.4 Mini
Agentic workLike-for-likePublic boards, shown as published, kept out of the index10
Agentic work benchmarks for GPT-5.4 Mini and o1
BenchmarkGPT-5.4 Minio1Leader
AA Agentic Index17.9Not measuredOnly GPT-5.4 Mini measured
Finance Agent (Vals AI)45.4%Not measuredOnly GPT-5.4 Mini measured
Tax Agent Bench (Vals AI)8.8%Not measuredOnly GPT-5.4 Mini measured
Legal Research Bench (Vals AI)12.5%Not measuredOnly GPT-5.4 Mini measured
Excel Modeling Benchmark (Vals AI)45.4%Not measuredOnly GPT-5.4 Mini measured
τ²-Bench Telecom83.3%62.6%GPT-5.4 Mini
METR time horizonsNot measured51.1%Only o1 measured
DeepResearch Bench36.3%Not measuredOnly GPT-5.4 Mini measured
Neither model has a result on the other 31 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index100
Reasoning benchmarks for GPT-5.4 Mini and o1
BenchmarkGPT-5.4 Minio1Leader
GPQA Diamond83.1%73.2%GPT-5.4 Mini
MMMU Pro (Vals AI)79.3%77.4%GPT-5.4 Mini
GPQA Diamond (Artificial Analysis run)87.5%74.7%GPT-5.4 Mini
Humanity's Last Exam (Artificial Analysis run)28.1%7.0%GPT-5.4 Mini
GPQA Diamond (Epoch AI run)86.9%76.8%GPT-5.4 Mini
ARC-AGI63.7%30.7%GPT-5.4 Mini
ARC-AGI-218.9%Not measuredOnly GPT-5.4 Mini measured
SimpleBenchNot measured40.1%Only o1 measured
Chess puzzles23.0%10.0%GPT-5.4 Mini
Mystery game puzzles11.0%Not measuredOnly GPT-5.4 Mini measured
VPCTNot measured37.0%Only o1 measured
LMArena Text: hard prompts14241371GPT-5.4 Mini
LMArena Text: expert14351361GPT-5.4 Mini
LMArena Text: hard prompts in English14201372GPT-5.4 Mini
LMArena Vision: diagrams1266Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: homework1285Not measuredOnly GPT-5.4 Mini measured
Neither model has a result on the other 5 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index50
Math benchmarks for GPT-5.4 Mini and o1
BenchmarkGPT-5.4 Minio1Leader
AIME95.6%71.5%GPT-5.4 Mini
MATH 500 (Vals AI)Not measured90.4%Only o1 measured
MGSM (Vals AI)Not measured89.3%Only o1 measured
OTIS Mock AIME88.9%73.3%GPT-5.4 Mini
FrontierMath, tiers 1 to 351.2%14.7%GPT-5.4 Mini
FrontierMath, tier 49.8%Not measuredOnly GPT-5.4 Mini measured
ProofBench21.0%Not measuredOnly GPT-5.4 Mini measured
MATH level 5Not measured94.7%Only o1 measured
LMArena Text: math14181388GPT-5.4 Mini
LMArena Text: mathematical work14291390GPT-5.4 Mini
Neither model has a result on the other 3 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index52
Knowledge benchmarks for GPT-5.4 Mini and o1
BenchmarkGPT-5.4 Minio1Leader
MMLU Pro84.5%83.5%GPT-5.4 Mini
LegalBench (Vals AI)Not measured80.4%Only o1 measured
CaseLaw (Vals AI)51.7%Not measuredOnly GPT-5.4 Mini measured
CorpFin (Vals AI)60.9%Not measuredOnly GPT-5.4 Mini measured
TaxEval (Vals AI)71.2%74.3%o1
MortgageTax (Vals AI)63.5%Not measuredOnly GPT-5.4 Mini measured
MedQA (Vals AI)Not measured96.5%Only o1 measured
MMLU Pro (Artificial Analysis run)Not measured84.1%Only o1 measured
SimpleQA Verified29.4%41.1%o1
GeoBenchNot measured80.0%Only o1 measured
LMArena Text: science14171369GPT-5.4 Mini
LMArena Text: medicine and healthcare13951355GPT-5.4 Mini
LMArena Text: legal and government14141368GPT-5.4 Mini
LMArena Text: business and finance14181328GPT-5.4 Mini
Neither model has a result on the other 3 boards here
Web designNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Web design benchmarks for GPT-5.4 Mini and o1
BenchmarkGPT-5.4 Minio1Leader
Neither model has a result on 9 boards here
GeneralLike-for-likePublic boards, shown as published, kept out of the index221
General benchmarks for GPT-5.4 Mini and o1
BenchmarkGPT-5.4 Minio1Leader
SAGE (Vals AI)50.8%Not measuredOnly GPT-5.4 Mini measured
Vals Multimodal Index54.2%Not measuredOnly GPT-5.4 Mini measured
IFBench73.3%70.3%GPT-5.4 Mini
Long context reasoning (AA-LCR)77.0%65.0%GPT-5.4 Mini
DTBench80.0%74.7%GPT-5.4 Mini
LMCA40.8%22.3%GPT-5.4 Mini
Fiction.LiveBenchNot measured83.3%Only o1 measured
Creative writing (Lech Mazur)Not measured70.2%Only o1 measured
LMArena Text14121366GPT-5.4 Mini
LMArena Text: instruction following14051367GPT-5.4 Mini
LMArena Text: creative writing13701347GPT-5.4 Mini
LMArena Vision12451168GPT-5.4 Mini
LMArena Text: English14121372GPT-5.4 Mini
LMArena Text: non-English14051358GPT-5.4 Mini
LMArena Text: Chinese14461394GPT-5.4 Mini
LMArena Text: German14081337GPT-5.4 Mini
LMArena Text: Japanese13751346GPT-5.4 Mini
LMArena Text: Korean13701396o1
LMArena Text: French14411344GPT-5.4 Mini
LMArena Text: Spanish14051345GPT-5.4 Mini
LMArena Text: Russian14171356GPT-5.4 Mini
LMArena Text: Polish1415Not measuredOnly GPT-5.4 Mini measured
LMArena Text: multi-turn14291355GPT-5.4 Mini
LMArena Text: longer queries14081378GPT-5.4 Mini
LMArena Text: writing and language13931360GPT-5.4 Mini
LMArena Text: entertainment and media13731358GPT-5.4 Mini
LMArena Vision: English12441162GPT-5.4 Mini
LMArena Vision: Chinese12861235GPT-5.4 Mini
LMArena Vision: reading text1253Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: humor1235Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: recognizing things1218Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: creative writing1222Not measuredOnly GPT-5.4 Mini measured
Neither model has a result on the other 14 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for GPT-5.4 Mini and o1
BenchmarkGPT-5.4 Minio1Leader
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

GPT-5.4 Mini$0.0030Fits in one request
o1$0.045Fits in one request

GPT-5.4 Mini costs less

Repository review

50K input + 3K output tokens

GPT-5.4 Mini$0.051Fits in one request
o1$0.930Fits in one request

GPT-5.4 Mini costs less

Agent loop

200K input + 10K output tokens

GPT-5.4 Mini$0.195Fits in one request
o1$3.60Exceeds the context window

GPT-5.4 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 GPT-5.4 Mini and o1
SpecificationOpenAI GPT-5.4 MiniOpenAI o1
MakerOpenAIOpenAI
WeightsNo public weights listedNo public weights listed
ReleasedMarch 17, 2026December 17, 2024
Context window400K200K
Input $/Mtok$0.75$15.00
Output $/Mtok$4.50$60.00
Coding index28.261.7
Independent measurements behind it11
Cost per solved task$0.70Not computable
SourceOpenRouter listingOpenRouter listing

Questions

Is GPT-5.4 Mini better than o1 for coding?

Pick o1 for coding: it scores 61.7 on the Vibe Coding Index against 28.2 for GPT-5.4 Mini. Pick GPT-5.4 Mini when output tokens cost 13.3x less, or when the context window is larger, 400K against 200K tokens.

Which is cheaper, GPT-5.4 Mini or o1?

GPT-5.4 Mini costs $0.75 per million input tokens and $4.50 per million output tokens; o1 costs $15.00 and $60.00. Cost per solved task is known for GPT-5.4 Mini only.

Which has the bigger context window, GPT-5.4 Mini or o1?

GPT-5.4 Mini, with 400K tokens against 200K.

How many benchmarks is the GPT-5.4 Mini vs o1 comparison based on?

54 benchmarks have a result for both models as of October 21, 2026. GPT-5.4 Mini's coding index rests on 1 independent benchmark and o1's on 1. Where only one model has a result, the page says so instead of naming a winner.

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