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OpenAI: GPT-5.6 Luna

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openai/gpt-5.6-luna
Created Aug 6, 2026|1M context|$0.40/M input tokens|$1.80/M output tokens

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.

Providers for OpenAI: GPT-5.6 Luna

RedPill routes this private model across verified providers with automatic fallbacks. Pricing is unified, so you pay the same price no matter which provider serves your request, while live metrics show first-token latency, speed, and uptime.

Total Context
1M
Input
$0.40/M
Output
$1.80/M
ProviderFirst TokenSpeedUptime
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Gateway API

RedPill provides a unified private completion API to all models and providers that you can call directly, or through the OpenAI SDK. Verification can be added without changing your model call pattern.

const response = await fetch("https://api.redpill.ai/v1/chat/completions", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.REDPILL_API_KEY}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "model": "openai/gpt-5.6-luna",
    "messages": [
      {
        "role": "user",
        "content": "What is the meaning of life?"
      }
    ],
    "provider": { "aci_verified": true }
  })
});

console.log("receipt", response.headers.get("x-receipt-id"));
console.log(await response.json());
RedPill

End-to-end encrypted AI through one gateway: private models, verified providers, unified pricing, live performance, and evidence your team can check.