Head-to-head comparison

GPT-4o (2024-08-06) vs GPT-5.4 Nano

GPT-4o (2024-08-06) (OpenAI) and GPT-5.4 Nano (OpenAI) compared on the ModelCap Index, API price, context window, provider availability, weight access and every public benchmark board they share. Figures are the same ones shown on the live rankings; nothing here is a hidden score.

Snapshot as of 3 September 2026

As of 3 September 2026, GPT-5.4 Nano holds the stronger ModelCap Index position (#47 vs #110); GPT-5.4 Nano is 8× cheaper per output token ($1.25/1M vs $10.00/1M); and GPT-5.4 Nano offers the longer context window (400K vs 128K tokens).

Which should you choose?

Choose GPT-4o (2024-08-06) if…

ModelCap publishes no field on which GPT-4o (2024-08-06) leads GPT-5.4 Nano for this pair.

Choose GPT-5.4 Nano if…

you want the stronger overall ModelCap Index position — #47 against #110 (51.7 vs 24.2 points).
API cost matters — $1.25/1M output tokens against $10.00/1M, about 8× cheaper.
your workload is prompt-heavy — input tokens cost $0.20/1M against $2.50/1M.
you need the longer context window — 400K tokens against 128K.
Arena coding is your yardstick — 1460 against 1360.
AA Intelligence Index is your yardstick — 39.7 against 9.4.
AA τ²-Bench Telecom is your yardstick — 76.0% against 28.9%.
AA Humanity's Last Exam is your yardstick — 28.3% against 2.3%.
you want the more recently listed model — GPT-5.4 Nano was listed 17 March 2026, GPT-4o (2024-08-06) 6 August 2024.

GPT-4o (2024-08-06) vs GPT-5.4 Nano: specs, pricing and context

Specification comparison of GPT-4o (2024-08-06) and GPT-5.4 Nano
Field	GPT-4o (2024-08-06)OpenAI	GPT-5.4 NanoOpenAI
ModelCap Index position	#110	#47
Index score	24.2	51.7
Evidence	Measured	Measured
Input price / 1M tokens	$2.50	$0.20
Output price / 1M tokens	$10.00	$1.25
Context window	128K tokens	400K tokens
Max output tokens	16K	128K
API providers listed	2	2
Weight access	API only	API only
Input modalities	Text, Image, File	File, Image, Text
First listed	6 August 2024	17 March 2026
Publisher	OpenAI	OpenAI

Evidence: 3 public benchmark observations across 3 boards · 4 public benchmark observations across 4 boards. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: GPT-4o (2024-08-06) vs GPT-5.4 Nano

Public benchmark boards where GPT-4o (2024-08-06) or GPT-5.4 Nano has a published result
Board	GPT-4o (2024-08-06)	GPT-5.4 Nano	Leads
Arena codingArena (LMArena)	13601352–1368	14601454–1466High	GPT-5.4 Nano
ARC-AGI-2ARC Prize Foundation	—	5.7%X-High	Only one result
AA Intelligence IndexArtificial Analysis	9.4intelligence-index	39.7intelligence-index	GPT-5.4 Nano
AA Terminal-Bench 2.1Artificial Analysis	—	60.7%terminal-bench-2.1	Only one result
AA τ²-Bench TelecomArtificial Analysis	28.9%tau2-bench-telecom	76.0%tau2-bench-telecom	GPT-5.4 Nano
AA Humanity's Last ExamArtificial Analysis	2.3%humanitys-last-exam	28.3%humanitys-last-exam	GPT-5.4 Nano

Scores are the sources' own published figures for each model's best evaluated configuration; ModelCap never re-runs a benchmark.

Want a different pairing? Open the interactive comparison tool to swap either model for any current ranked language model.

GPT-4o (2024-08-06) vs GPT-5.4 Nano: common questions

Is GPT-4o (2024-08-06) better than GPT-5.4 Nano?

GPT-5.4 Nano ranks higher on the ModelCap Index as of 3 September 2026: #47 against #110. That is a capability ranking built from public benchmark evidence with published uncertainty; whether it is "better" for you also depends on price, context and where you can run it.

Is GPT-4o (2024-08-06) cheaper than GPT-5.4 Nano?

GPT-5.4 Nano is cheaper on output tokens: $1.25/1M against $10.00/1M. Input tokens are $2.50/1M for GPT-4o (2024-08-06) and $0.20/1M for GPT-5.4 Nano. Prices are the lowest listed API offer ModelCap observed, in USD per million tokens.

Which has the bigger context window, GPT-4o (2024-08-06) or GPT-5.4 Nano?

GPT-5.4 Nano has the larger context window: 400K tokens against 128K.

Which is better for coding, GPT-4o (2024-08-06) or GPT-5.4 Nano?

Arena coding: GPT-4o (2024-08-06) 1360, GPT-5.4 Nano 1460 — GPT-5.4 Nano leads.

Are GPT-4o (2024-08-06) and GPT-5.4 Nano open-weight models?

GPT-4o (2024-08-06): API only. GPT-5.4 Nano: API only. Open weights mean the checkpoint can be downloaded and self-hosted under its licence; API-only models are available solely through hosted endpoints.

Where can I run GPT-4o (2024-08-06) and GPT-5.4 Nano?

ModelCap currently lists 2 API providers for GPT-4o (2024-08-06) and 2 for GPT-5.4 Nano, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this GPT-4o (2024-08-06) vs GPT-5.4 Nano comparison?

Every figure comes from the sealed ModelCap dataset published 3 September 2026; the page re-renders within a minute of each data refresh, and the ModelCap Index positions are the same ones shown on the live rankings.