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Data points: 81

On this page

Key TakeawaysComparison sheetBenchmark score comparisonAPI audit comparisonProvider examplesWhen to choose each modelFAQRelated compare reports

Key Takeaways

The readout for GPT-5.4 and GPT-5.4 Nano, before the detailed comparison sheet.

Decision read

GPT-5.4

GPT-5.4 currently has the stronger profile, with verified wins split 4 to 2.

Evidence depth

81 data points

Includes 8 benchmark rows, 0 audit samples, and 8 provider examples.

Selection signal

Start with GPT-5.4

The charts below split 16 high-signal samples across speed, scores, and audit health.

Model compare

GPT-5.4 vs GPT-5.4 Nano

gpt-5-4-vs-gpt-5-4-nano

Model A

OpenAI

GPT-5.4

Model B

OpenAI

GPT-5.4 Nano

Overall leaderLeadingContender
Verified metric wins4 wins2 wins
Where it leadsCheapest input price, Free providers, Provider coverage, Recent tests

Benchmark score comparison

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

Metric
OpenAIGPT-5.4
OpenAIGPT-5.4 Nano
GPQA
92.0%#3

API audit comparison

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

Provider
OpenAIGPT-5.4
OpenAIGPT-5.4 Nano
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
OpenAIGPT-5.4
OpenAIGPT-5.4 Nano
100 tests
OpenAI

GPT-5.4

speed / latency

57 tok/s / 3556ms

input / output

No data

OpenAI

GPT-5.4 Nano

When to choose each model

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

Guidance
OpenAIGPT-5.4
OpenAIGPT-5.4 Nano
When to choose each model

GPT-5.4

GPT-5.4 is stronger when you prioritize Cheapest input price, Free providers, Provider coverage, Recent tests.

GPT-5.4 Nano

GPT-5.4 Nano is stronger when you prioritize Average speed, First-token latency.

FAQ

TL;DR: GPT-5.4 leads across 81 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.

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.

Related compare reports

Continue from GPT-5.4 vs GPT-5.4 Nano into nearby model comparisons with enough verified LMSpeed data.

Average speed, First-token latency
Model metadataGPT-5.4 exposes 1.1M tokens; notable signals: Text input, Image input, File input, Text output.GPT-5.4 Nano exposes 400K tokens; notable signals: Text input, Image input, File input, Text output.
DeveloperOpenAIOpenAI
Context window1.1M tokens400K tokens
Max output128K tokens128K tokens
ReleasedMar 2026Mar 2026
Modalities

Input

TextImageFile

Output

Text

Input

FileImageText

Output

Text
Features
Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning
Text inputImage inputFile inputText outputTool callingStructured outputsJSON mode
ParametersNo dataNo data
TokenizerGPTGPT
Knowledge cutoffNo data2025-08-31
OpenRouter IDopenai/gpt-5.4openai/gpt-5.4-nano
ReferencesNo dataNo data
81.7%
#50
SciCode
56.6%#3
46.9%#16
HLE
41.6%#4
26.5%#24
Input price
$2.50/M#37
$0.200/M#11
Output price
$15.00/M#44
$1.25/M#19
Blended price
$5.63/M#63
$0.463/M#23
Output speed
92.4 tok/s#56
148.7 tok/s#31
Time to first answer token
134.24 s#111
2.46 s#44

speed / latency

N/A / N/A

input / output

No data

Sub2API20 tests
OpenAI

GPT-5.4

speed / latency

51 tok/s / 4032ms

input / output

No data

OpenAI

GPT-5.4 Nano

speed / latency

N/A / N/A

input / output

No data

Sub2API20 tests
OpenAI

GPT-5.4

speed / latency

34 tok/s / 1748ms

input / output

No data

OpenAI

GPT-5.4 Nano

speed / latency

N/A / N/A

input / output

No data

6345ywz API15 tests
OpenAI

GPT-5.4

speed / latency

41 tok/s / 6581ms

input / output

No data

OpenAI

GPT-5.4 Nano

speed / latency

N/A / N/A

input / output

No data

Sub2API10 tests
OpenAI

GPT-5.4

speed / latency

54 tok/s / 1369ms

input / output

No data

OpenAI

GPT-5.4 Nano

speed / latency

N/A / N/A

input / output

No data

AI API
OpenAI

GPT-5.4

openai/gpt-5.4

speed / latency

No data

input / output

$5.00/M / $20.00/M

OpenAI

GPT-5.4 Nano

openai/gpt-5.4-nano

speed / latency

No data

input / output

$0/M / $0/M

ZetaTechs API
OpenAI

GPT-5.4

gpt-5.4-free

speed / latency

No data

input / output

$0/M / $0/M

OpenAI

GPT-5.4 Nano

gpt-5.4-nano-2026-03-17

speed / latency

No data

input / output

$0.400/M / $2.50/M

3173721 API
OpenAI

GPT-5.4

gpt-5.4-openai-compact

speed / latency

No data

input / output

$75.00/M / $450.00/M

OpenAI

GPT-5.4 Nano

gpt-5.4-nano

speed / latency

No data

input / output

$0.0010/M / $0.0010/M

Mars HK
ClaudeClaude Opus 4.6 vs GPT-5.46 verified data points
OpenAIGPT-5 vs GPT-5.46 verified data points
OpenAIGPT-5.2 vs GPT-5.46 verified data points
GeminiGemini 2.5 Pro vs GPT-5.46 verified data points

Data as of Jun 13, 2026, 02:04 AM·Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.

Reasoning