> ## 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 Luna API

> GPT-5.6 Luna API on Venice: 1M context, $0.20 input and $1.20 output per 1M tokens. Anonymized access without your identity. Pricing, specs and code examples.

> [accordion] Plain-text specification
>
> ## GPT-5.6 Luna API
>
> GPT-5.6 Luna is a large language model by OpenAI, available on the Venice API as `openai-gpt-56-luna`. Requests are anonymized, so the provider never sees your identity.
>
> GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic workflows, providing capable reasoning for its price tier.
>
> ### GPT-5.6 Luna API pricing
>
> | Model ID | Variant | Privacy | Price |
> | - | - | - | - |
> | `openai-gpt-56-luna` | Standard | Anonymized | $0.20 / $1.20 per 1M |
>
> ### GPT-5.6 Luna specifications
>
> | Spec | Value |
> | - | - |
> | Provider | OpenAI |
> | Released | Jul 9, 2026 |
> | Privacy | Anonymized |
> | Status | Stable |
> | Context window | 1M tokens |
> | Max output | 128K tokens |
> | Reasoning effort | none, low, medium, high, xhigh, max |
>
> ### How to use the GPT-5.6 Luna API
>
> Send requests to `POST https://api.venice.ai/api/v1/responses` with `"model": "openai-gpt-56-luna"` 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-luna",
>     "input": "Explain TEE attestation in two sentences.",
>     "reasoning": { "effort": "high" }
>   }'
> ```
>
> ### Related models
>
> * [GPT-6 Luna API](https://docs.venice.ai/models/gpt-6-luna.md): $0.10 / $0.50 per 1M
> * [Mercury 2.5 API](https://docs.venice.ai/models/mercury-2-5.md): $0.25 / $0.9375 per 1M
> * [MiniMax M3 Preview API](https://docs.venice.ai/models/minimax-m3-preview.md): $0.30 / $1.20 per 1M
> * [MiniMax M2.5 API](https://docs.venice.ai/models/minimax-m2-5.md): $0.27 / $0.95 per 1M
> * [Mercury 2 API](https://docs.venice.ai/models/mercury-2.md): $0.3125 / $0.9375 per 1M


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