> ## Documentation Index
> Fetch the complete documentation index at: https://docs.venice.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# GPT-5.6 Terra Pro API

> GPT-5.6 Terra Pro API on Venice: 1M context, $2.00 input and $12.00 output per 1M tokens. Anonymized access without your identity.

> [accordion] Plain-text specification
>
> ## GPT-5.6 Terra Pro API
>
> GPT-5.6 Terra Pro is a large language model by OpenAI, available on the Venice API as `openai-gpt-56-terra-pro`. Requests are anonymized, so the provider never sees your identity.
>
> GPT-5.6 Terra Pro is the same underlying model as GPT-5.6 Terra, served with reasoning.mode set to pro for higher-quality responses on complex tasks.
>
> ### GPT-5.6 Terra Pro API pricing
>
> | Model ID | Variant | Privacy | Price |
> | - | - | - | - |
> | `openai-gpt-56-terra-pro` | Standard | Anonymized | $2.00 / $12.00 per 1M |
>
> ### GPT-5.6 Terra Pro specifications
>
> | Spec | Value |
> | - | - |
> | Provider | OpenAI |
> | Released | Jul 9, 2026 |
> | Privacy | Anonymized |
> | Status | Stable |
> | Context window | 1M tokens |
> | Max output | 128K tokens |
> | Reasoning effort | low, medium, high, xhigh, max |
>
> ### How to use the GPT-5.6 Terra Pro API
>
> Send requests to `POST https://api.venice.ai/api/v1/responses` with `"model": "openai-gpt-56-terra-pro"` and your API key.
>
> ```bash theme={"system"}
> curl https://api.venice.ai/api/v1/responses \
>   -H "Authorization: Bearer $VENICE_API_KEY" \
>   -H "Content-Type: application/json" \
>   -d '{
>     "model": "openai-gpt-56-terra-pro",
>     "input": "Explain TEE attestation in two sentences.",
>     "reasoning": { "effort": "medium" }
>   }'
> ```
>
> ### Related models
>
> * [Aion 3.0 API](https://docs.venice.ai/models/aion-3-0.md): $3.75 / $7.50 per 1M
> * [Claude Sonnet 5 API](https://docs.venice.ai/models/claude-sonnet-5.md): $2.00 / $10.00 per 1M
> * [Aion 3.5 API](https://docs.venice.ai/models/aion-3-5.md): $3.75 / $7.50 per 1M
> * [Qwen 3.7 Max API](https://docs.venice.ai/models/qwen-3-7-max.md): $2.70 / $8.05 per 1M


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