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Model compare

GPT-4o vs GPT-5.4 Mini

The readout for GPT-4o and GPT-5.4 Mini, before the detailed comparison sheet.

Model A

GPT-4o

OpenAI

Contender
vs

Model B

GPT-5.4 Mini

OpenAI

Leading

Key Takeaways

Weighted outcome: GPT-5.4 Mini. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.

Decision read

GPT-5.4 Mini

GPT-5.4 Mini has the higher weighted result; Model A / B score 17.3 to 82.7.

Evidence depth

100 data points

Includes 17 benchmark rows, 0 audit samples, and 10 provider examples.

Selection signal

Start with GPT-5.4 Mini

The charts below split 27 high-signal samples across speed, scores, and audit health.

Change comparison

Switch either side of this report to compare another model with the same LMSpeed data pipeline.

Select a different model to open a new comparison URL.

Comparison sheet

This report only uses LMSpeed data for GPT-4o and GPT-5.4 Mini: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.

Model compare
GPT-4o
GPT-5.4 Mini
Overall leaderContenderLeading
Weighted overall score17.3 pts82.7 pts
Benchmark category leads1 categories5 categories
Operational advantagesFirst-token latencyCheapest input price, Average speed, Free providers, Provider coverage
Context window128K tokens400K tokens
Max output16.4K tokens128K tokens
Modalities

Input

TextImageFile

Output

Text

Input

FileImageText

Output

Text
Features
Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeWeb search
Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning

The overall result weights benchmark capability categories at 80% and price, API speed/latency, and availability at 20%. Recent test volume does not affect the winner, and missing benchmark categories are excluded.

Model metadata

Model compare
GPT-4o
GPT-5.4 Mini
DeveloperOpenAIOpenAI
ReleasedNov 2024Mar 2026
ParametersNo dataNo data
TokenizerGPTGPT
Knowledge cutoff2023-10-312025-08-31
OpenRouter IDopenai/gpt-4oopenai/gpt-5.4-mini
ReferencesNo dataNo data

When to choose each model

This report only uses LMSpeed data for GPT-4o and GPT-5.4 Mini: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.

GPT-4o

GPT-4o is stronger in benchmark categories (Knowledge) and operational dimensions (First-token latency).

GPT-5.4 Mini

GPT-5.4 Mini is stronger in benchmark categories (Agents, Coding, Reasoning, Math, Instruction following) and operational dimensions (Cheapest input price, Average speed, Free providers, Provider coverage).

Benchmark score comparison

Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.

Category performance

Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.

Model A coverage
6 / 8
Model B coverage
7 / 8
Shared
6 shared categories

Avg. score

GPT-4o

42.9

Avg. score

GPT-5.4 Mini

51.4

Agents

GPT-5.4 Mini leads by 11.9

GPT-4o39
GPT-5.4 Mini50.9

Coding

GPT-5.4 Mini leads by 11.3

GPT-4o45.9
GPT-5.4 Mini57.2

Reasoning

GPT-5.4 Mini leads by 15.6

GPT-4o39.9
GPT-5.4 Mini55.5

Knowledge

GPT-4o leads by 2.9

GPT-4o48.9
GPT-5.4 Mini46

Math

GPT-5.4 Mini leads by 7.5

GPT-4o42.2
GPT-5.4 Mini49.7

Multilingual

No data

GPT-4o-
GPT-5.4 Mini-

Multimodal

GPT-5.4 Mini

GPT-4o-
GPT-5.4 Mini47.1

Instruction following

GPT-5.4 Mini leads by 12.0

GPT-4o41.6
GPT-5.4 Mini53.6

Professional benchmark details

Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.

Aggregatereported

BenchLM overall score

SourceGPT-4o

GPT-4o

43.0

Rank #91/102 · confidence 1 · eval date 2024-05-13

+12.0

GPT-5.4 Mini

winner

55.0

Rank #57/102 · confidence 3 · eval date 2026-03-17

Pricingverified

Input price

SourceGPT-4o (Nov '24)

GPT-4o

$2.50/M

Rank #153/184 · confidence 4

+$1.75/M

GPT-5.4 Mini

winner

$0.750/M

Rank #105/184 · confidence 4

Pricingverified

Blended price

SourceGPT-4o (Nov '24)

GPT-4o

$4.38/M

Rank #148/184 · confidence 4

+$2.69/M

GPT-5.4 Mini

winner

$1.69/M

Rank #112/184 · confidence 4

Pricingverified

Output price

SourceGPT-4o (Nov '24)

GPT-4o

$10.00/M

Rank #141/184 · confidence 4

+$5.50/M

GPT-5.4 Mini

winner

$4.50/M

Rank #124/184 · confidence 4

Reasoningverified

GPQA

SourceGPT-4o (Nov '24)

GPT-4o

54.3%

Rank #182/216 · confidence 4

+28.0%

GPT-5.4 Mini

winner

82.3%

Rank #85/216 · confidence 4

Reasoningverified

HLE

SourceGPT-4o (Nov '24)

GPT-4o

2.4%

Rank #211/213 · confidence 4

+16.2%

GPT-5.4 Mini

winner

18.6%

Rank #88/213 · confidence 4

Codingreported

AA-SciCode

SourceGPT-4o

GPT-4o

33.3

Rank #92/109 · confidence 1 · eval date 2024-05-13

+16.6

GPT-5.4 Mini

winner

49.9

Rank #30/109 · confidence 3 · eval date 2026-03-17

Codingverified

SciCode

SourceGPT-4o (Nov '24)

GPT-4o

33.3%

Rank #141/209 · confidence 4

+10.9%

GPT-5.4 Mini

winner

44.2%

Rank #54/209 · confidence 4

Mathreported

FrontierMath v2 (Tiers 1-3)

SourceGPT-4o

GPT-4o

0.3

Rank #47/47 · confidence 1 · eval date 2024-05-13

+27.9

GPT-5.4 Mini

winner

28.3

Rank #20/47 · confidence 3 · eval date 2026-03-17

Mathreported

BenchLM Math score

SourceGPT-4o

GPT-4o

25.2

Rank #60/62 · confidence 1 · eval date 2024-05-13

+19.4

GPT-5.4 Mini

winner

44.6

Rank #38/62 · confidence 3 · eval date 2026-03-17

Knowledgereported

AA-Omniscience Hallucination Rate

SourceGPT-4o

GPT-4o

37.9

Rank #87/102 · confidence 1 · eval date 2024-05-13

+52.3

GPT-5.4 Mini

winner

90.2

Rank #18/102 · confidence 3 · eval date 2026-03-17

Knowledgereported

AA-Omniscience Accuracy

SourceGPT-4o

GPT-4o

19.9

Rank #87/102 · confidence 1 · eval date 2024-05-13

+17.6

GPT-5.4 Mini

winner

37.5

Rank #41/102 · confidence 3 · eval date 2026-03-17

Knowledgereported

Artificial Analysis Intelligence Index

SourceGPT-4o

GPT-4o

11.1

Rank #102/112 · confidence 1 · eval date 2024-05-13

+29.8

GPT-5.4 Mini

winner

40.9

Rank #41/112 · confidence 3 · eval date 2026-03-17

Knowledgereported

AA-GPQA Diamond

SourceGPT-4o

GPT-4o

54.3

Rank #103/109 · confidence 1 · eval date 2024-05-13

+33.2

GPT-5.4 Mini

winner

87.5

Rank #43/109 · confidence 3 · eval date 2026-03-17

Knowledgereported

AA-HLE

SourceGPT-4o

GPT-4o

2.4

Rank #109/109 · confidence 1 · eval date 2024-05-13

+25.7

GPT-5.4 Mini

winner

28.1

Rank #51/109 · confidence 3 · eval date 2026-03-17

Instruction followingreported

AA-IFBench

SourceGPT-4o

GPT-4o

34.3

Rank #80/84 · confidence 1 · eval date 2024-05-13

+39.0

GPT-5.4 Mini

winner

73.3

Rank #24/84 · confidence 3 · eval date 2026-03-17

Agentsreported

τ²-bench results

SourceGPT-4o

GPT-4o

25.1

Rank #73/82 · confidence 1 · eval date 2024-05-13

+68.3

GPT-5.4 Mini

winner

93.4

Rank #29/82 · confidence 3 · eval date 2026-03-17

API audit comparison

Latest completed audits from shared providers, with four safety and integrity score groups plus report links.

Provider
GPT-4o
GPT-5.4 Mini
No completed audits are available from shared providers yet.

Provider examples

Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.

Provider
GPT-4o
GPT-5.4 Mini
速创API20 tests

GPT-4o

speed / latency

88 tok/s / 1593ms

input / output

No data

GPT-5.4 Mini

speed / latency

N/A / N/A

input / output

No data

YUNWU API10 tests

GPT-4o

speed / latency

58 tok/s / 2583ms

input / output

No data

GPT-5.4 Mini

speed / latency

201 tok/s / 1441ms

input / output

No data

KFCV505 tests

GPT-4o

speed / latency

48 tok/s / 13138ms

input / output

No data

GPT-5.4 Mini

speed / latency

N/A / N/A

input / output

No data

MyWebUI API5 tests

GPT-4o

speed / latency

N/A / N/A

input / output

No data

GPT-5.4 Mini

speed / latency

98 tok/s / 4039ms

input / output

No data

Vercel AI Gateway5 tests

GPT-4o

speed / latency

N/A / N/A

input / output

No data

GPT-5.4 Mini

speed / latency

195 tok/s / 1104ms

input / output

No data

Dext API

GPT-4o

gpt-4o

speed / latency

No data

input / output

$0/M/$0/M

GPT-5.4 Mini

gpt-5.4-mini

speed / latency

No data

input / output

$0.062/M/$0.370/M

Moyanjdc API

GPT-4o

gpt-4o

speed / latency

No data

input / output

$75.00/M/$300.00/M

GPT-5.4 Mini

gpt-5.4-mini

speed / latency

No data

input / output

$0/M/$0/M

兔子API

GPT-4o

gpt-4o-all

speed / latency

No data

input / output

$0/request

GPT-5.4 Mini

gpt-5.4-mini

speed / latency

No data

input / output

$0/request

Crond

GPT-4o

gpt-4o-2024-08-06

speed / latency

No data

input / output

$2.50/M/$10.00/M

GPT-5.4 Mini

gpt-5.4-mini-免费

speed / latency

No data

input / output

$0.0030/request

Newagiai

GPT-4o

gpt-4o-all

speed / latency

No data

input / output

$0.0066/request

GPT-5.4 Mini

gpt-5.4-mini

speed / latency

No data

input / output

$0.103/M/$0.616/M

FAQ

Weighted outcome: GPT-5.4 Mini. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.

Why is this comparison indexable?
It has 6 verifiable comparison points, and both models have pricing or benchmark data.
Are missing metrics invented?
No. Metrics without LMSpeed data are omitted from this report.

Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.