GPT-5.6 Luna API: Pricing and Specs

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.

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: $0.10 / $0.50 per 1M
Mercury 2.5 API: $0.25 / $0.9375 per 1M
MiniMax M3 Preview API: $0.30 / $1.20 per 1M
MiniMax M2.5 API: $0.27 / $0.95 per 1M
Mercury 2 API: $0.3125 / $0.9375 per 1M

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GPT-5.6 Luna API