OpenAI: GPT-5.6 Luna

openai/gpt-5.6-luna

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...

Context window: 1,050,000 tokens
Input: file · image · text
Output: text
Relay support: Text & vision

Open in workspace →OpenRouter model page

Reference prices & points

Our global markup: 15% · 1 USD = 10,000 points · Price version 0

Billing unit	OpenRouter / USD	Our reference / USD	Points
Input / 1M tokens	$0.2	$0.23	2,300
Output / 1M tokens	$1.2	$1.38	13,800
Per search	$0.01	$0.0115	115
Cache read / 1M tokens	$0.02	$0.023	230
Cache write / 1M tokens	$0.25	$0.2875	2,875

Actual charge = the OpenRouter request cost × the markup locked for that request. Catalogue rates may be routing references; caching, long context, images and audio are charged when used. Listed prices do not mean every capability is available through this relay.

Catalogue time: 2026-11-12T00:00:40.986Z · Live catalogue

View upstream pricing tiers

These are raw upstream pricing conditions without our markup. The final charge is multiplied by the site rate.

[
  {
    "min_prompt_tokens": 272000,
    "prompt": "0.0000004",
    "completion": "0.0000018",
    "input_cache_read": "0.00000004",
    "input_cache_write": "0.0000005"
  }
]

View all upstream price fields

{
  "prompt": "0.0000002",
  "completion": "0.0000012",
  "web_search": "0.01",
  "input_cache_read": "0.00000002",
  "input_cache_write": "0.00000025",
  "overrides": [
    {
      "min_prompt_tokens": 272000,
      "prompt": "0.0000004",
      "completion": "0.0000018",
      "input_cache_read": "0.00000004",
      "input_cache_write": "0.0000005"
    }
  ]
}

Integration & availability

Use /v1/chat/completions for non-streaming, multi-turn conversations. Models marked for vision accept images; documents can be extracted to text in the workspace. Create a site API key and ensure you have enough points and the service is enabled. Provider availability, context and budget limits apply.

Read the API guide → · Back to model directory