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OpenAI · API model

GPT-5.4

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...

Context
1.05M
Input / 1M
$2.5
Output / 1M
$15
Released
Mar 5, 2026
View on OpenRouterFind it in the catalog
Specifications

GPT-5.4 specs

Provider
OpenAI
Type
API model
Model ID
openai/gpt-5.4
Context window
1,050,000 tokens1.05M
Input price
$2.5per 1M input tokens
Output price
$15per 1M output tokens
Accepts
file, image, text
Produces
text
Released
Mar 5, 2026
Popularity
33/100position #96 in OpenRouter's weekly usage ranking
Source
OpenRouter
Overview

About GPT-5.4

GPT-5.4 is an API model from OpenAI, released on Mar 5, 2026, with a context window of 1,050,000 tokens, pricing of $2.5 per million input tokens and $15 per million output tokens. It accepts file, image, text input and produces text output.

At listed prices, a request with 10,000 input tokens and 1,000 output tokens costs about $0.04.

Specs are sourced from OpenRouter and were last checked on Nov 3, 2026. Always confirm current pricing and limits with the provider before production use.

Tool callingStructured outputsJSON modeReasoning
FAQ

GPT-5.4 questions

What is the context window of GPT-5.4?

GPT-5.4 supports a context window of 1,050,000 tokens.

How much does GPT-5.4 cost?

GPT-5.4 is listed at $2.5 per million input tokens and $15 per million output tokens on OpenRouter.

When was GPT-5.4 released?

GPT-5.4 was published on Mar 5, 2026.

What inputs does GPT-5.4 accept?

GPT-5.4 accepts file, image, text input and produces text output.