How much does GPT-5.4 cost?

GPT-5.4 costs $2.50 per million input tokens and $15 per million output tokens on standard pricing. A workload of 20M input and 5M output tokens a month is about $125.

What is the context length of GPT-5.4?

GPT-5.4 accepts up to 1,050,000 tokens (1.1M) of input and can return up to 128,000 tokens in one response.

Does GPT-5.4 support tool calling and structured outputs?

Yes, GPT-5.4 supports function/tool calling and structured (JSON) outputs. Supported tools: Function calling, Structured outputs, JSON mode, Reasoning, Deterministic seed, Prompt caching.

What inputs and outputs does GPT-5.4 support?

GPT-5.4 accepts Text, Image, PDF as input and produces Text as output.

When was GPT-5.4 released?

GPT-5.4 was released by OpenAI in 2026-03-05.

GPT-5.4

gpt-5.4

API Provider site

GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for... Built by OpenAI.

Prices updated recently

Input price

$2.50

per 1M tokens · Standard

Output price

$15

per 1M tokens · Standard

Input limit

1.1M

tokens

Output limit

128K

tokens

Input formats

TextImageVideoAudioPDF

Output formats

TextImageVideoAudioPDF

Compare

GPT-5.4 price history

2 price records since 9/25/2026

GPT-5.4 cost calculator

Input20M tokens

Output5M tokens

$125/month

Standard pricing

Overview

What is GPT-5.4?

GPT-5.4 is a text & reasoning and vision model from OpenAI. GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for... Its 1.1M context window and $2.50 input price make it a candidate for quality-focused production applications.

Image understandingDocument analysisContent workflowsClassification

Benchmarks

GPT-5.4 benchmarks & speed

How GPT-5.4 scores on standardized evaluations, and where it lands among every model we track.

39.0

Intelligence Index

Better than 86% of 153 models

107tok/s

Output speed

Better than 58% of 119 models

Reasoning

GPQA Diamond

92.0%

Graduate-level scientific reasoning · top 15%

HLE

43.7%

Humanity's Last Exam · top 11%

Latency & design

Time to first token: 153.17s

Independent scores from Artificial Analysis and DesignArena · updated 10/5/2026. Higher is better; ranks compare against every model we track with that score.

Rates

GPT-5.4 pricing

Pricing is based on token usage. Provider-specific caching, batch, regional, and tool charges may affect the final cost.

Input · Standard

$2.50

Per 1M tokens

Cached input · Standard

$0.25

Per 1M tokens

Capabilities

GPT-5.4 Tools

Tools available when using GPT-5.4 through supported provider APIs.

Function calling

Supported

Structured outputs

Supported

JSON mode

Supported

Reasoning

Supported

Built-in web search

Not supported

Log probabilities

Not supported

Deterministic seed

Supported

Parallel tool calls

Not supported

Prompt caching

Supported

Strengths and limitations

Strengths

Measured results (AA Intelligence 39) position it for demanding production work.
1.1M context supports large documents, repositories and extended conversations.
Supports text & reasoning and vision workloads in one model.

Limitations

Generated tokens cost 6× more than input tokens, which matters for verbose responses.
Large context capacity does not guarantee consistent retrieval across the entire prompt.
Arena Elo and MMLU-Pro are directional; test accuracy, latency and reliability on your own workload before committing.

Arena Elo, MMLU-Pro and pricing figures are illustrative; validate current vendor terms before purchase.

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