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OpenAI: GPT-5.4

GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. $2.50 per million input tokens, $15 per million output tokens. 1,050,000 token context window, maximum output of 128,000 tokens. Higher uptime with 3 providers. Includes independent benchmarks from Artificial Analysis.

View source on OpenRouter
Overview

Model specifications

Context
1,050,000 tokens
Maximum output
128,000 tokens
Architecture
text+image+file->text
Tokenizer
GPT
Knowledge cutoff
Not provided
Moderated
Yes
OPENROUTER

Complete pricing

Synchronized OpenRouter rates. Token prices are shown per one million tokens.

Input
$2.5
/M tokens
  • ≤272K$2.5
  • >272K$5
Output
$15
/M tokens
  • ≤272K$15
  • >272K$22.5
Cache read
$0.25
/M tokens
  • ≤272K$0.25
  • >272K$0.5
Web search
$10
/1K calls
API

Model configuration

Reasoning

Moderated
No
Default parameters
medium
Capabilities
xhigh, high, medium, low, none
API

Quick start

Call this exact model ID through OpenRouter’s OpenAI-compatible API.

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"openai/gpt-5.4","messages":[{"role":"user","content":"Hello!"}]}'
Capabilities

Input → Output

Input
textimagefile
Output
text
Reasoning

No · xhigh · high · medium · low · none

API

Supported API parameters

include_reasoningmax_completion_tokensmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetools
Available providers

7 providers

Live providers on OpenRouter

Provider availability, latency, throughput and routing can change continuously. Open the source page for current operational data.

OpenRouter

OpenAI

unknown
Context
1.1M
Maximum output
128K
Input
$1.25
Output
$7.50
Cache read
$0.125
Cache write
Not provided

OpenAI

unknown
Context
1.1M
Maximum output
128K
Input
$2.50
Output
$15.00
Cache read
$0.250
Cache write
Not provided

Azure

unknown
Context
1.1M
Maximum output
128K
Input
$2.50
Output
$15.00
Cache read
$0.250
Cache write
Not provided

Azure

unknown
Context
1.1M
Maximum output
128K
Input
$2.75
Output
$16.50
Cache read
$0.275
Cache write
Not provided

Azure

unknown
Context
1.1M
Maximum output
128K
Input
$2.75
Output
$16.50
Cache read
$0.275
Cache write
Not provided

Amazon Bedrock

unknown
Context
1.1M
Maximum output
128K
Input
$2.75
Output
$16.50
Cache read
$0.275
Cache write
Not provided

OpenAI

unknown
Context
1.1M
Maximum output
128K
Input
$5.00
Output
$30.00
Cache read
$0.500
Cache write
Not provided
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Context
1.1M
Input
file · image · text
Output
text
Input: $0.200Output: $1.20per 1M tokens
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Context
1.1M
Input
file · image · text
Output
text
Input: $2.00Output: $12.00per 1M tokens
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