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openai/gpt-5.5-pro

GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+ token context window (922K input, 128K output) with support for text and image...

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128K max outputVision
Input $30.00/M · Output $180.00/M
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API details and access

Model Details

ProviderOpenAI
TypeLlm
Model IDopenai/gpt-5.5-pro

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-5.5-pro",
  "instructions": "You are a helpful assistant.",
  "input": "Hello",
  "max_output_tokens": 512
}

Pricing

Input$30.00 / 1M tokens
Output$180.00 / 1M tokens

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