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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. It features a 1M+ token context window (922K input, 128K output) with support for text and image inputs, enabling high-con...

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128K max outputVision
Input $2.50/M · Output $15.00/M · Cache read $0.25/M
OutputReady

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API details and access

Model Details

ProviderOpenAI
TypeLlm
Model IDopenai/gpt-5.4

Capabilities

InputTextImage
OutputText
Context-
Max Output128,000
VisionSupported
Function CallingSupported

Access details

Responses API
Base URLhttps://api.sandbase.ai
API Endpoint/v1/responses
{
  "model": "openai/gpt-5.4",
  "instructions": "You are a helpful assistant.",
  "input": "Hello",
  "max_output_tokens": 512
}

Pricing

Input$2.50 / 1M tokens
Output$15.00 / 1M tokens
Cache read$0.25 / 1M tokens

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