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openai/gpt-5.6-terra-pro

GPT-5.6 Terra Pro is the same underlying model as [GPT-5.6 Terra](https://openrouter.ai/openai/gpt-5.6-terra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenA...

Input⌘ / Ctrl + Enter

Try a prompt

128K max outputVision
Input $2.00/M · Output $12.00/M · Cache read $0.20/M
OutputReady

Your response will appear here

Choose an example or write a prompt, then click Run.

API details and access

Model Details

ProviderOpenAI
TypeLlm
Model IDopenai/gpt-5.6-terra-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-5.6-terra-pro",
  "instructions": "You are a helpful assistant.",
  "input": "Hello",
  "max_output_tokens": 512
}

Pricing

Input$2.00 / 1M tokens
Output$12.00 / 1M tokens
Cache read$0.20 / 1M tokens

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