Long context

GPT-6 Luna API pricing

OpenAI's GPT series — broad general capability, wide ecosystem, and the native models behind Codex CLI.

Model IDopenai/gpt-6-luna

ChatStreamingTool callingVision

Get API Key Run your first request

Call summary

Input

$0.10/ 1M tokens

Cache write $0.125

Cache read $0.01

Output

$0.50/ 1M tokens

Applies to request input ≤ 272,000 tokens · See pricing tiers

Context Window

1.05M

API Endpoints

GPT-6 Luna API endpoints

One API key — call this model through any of the 2 endpoints below.

POST/v1/chat/completionsOpenAI-compatible · Works for every model

Chat Completions reference

POST/v1/responsesResponses API · Native for Codex CLI

Responses API reference

GPT-6 Luna pricing tiers

Pricing is tiered by total input length per request (cache included); once a threshold is crossed, the whole request is billed at that tier. All prices are per 1M tokens.

Tier

Standard≤ 272K

Input

$0.10Cache write: $0.125Cache read: $0.01

Output

$0.50

Tier

Long context> 272K

Input

$0.20Cache write: $0.25Cache read: $0.02

Output

$0.75

Tier	Input	Output
Standard≤ 272K	$0.10Cache write: $0.125Cache read: $0.01	$0.50
Long context> 272K	$0.20Cache write: $0.25Cache read: $0.02	$0.75

Call GPT-6 Luna from your code

The same API key works across all 2 endpoints below.

Endpoint

/v1/chat/completions

Model ID

openai/gpt-6-luna

Request example

bash

curl -X POST \
  https://api.router.one/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "openai/gpt-6-luna",
    "messages": [
      {"role": "user", "content": "Hello!"}
    ]
  }'

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More GPT models on Router One

19 other GPT models on the same gateway and API key — each page lists endpoints, posted price, and context window.

8 channel versions

GPT-5.5 · Azure$3.75 in / $22.50 out per 1M1.05M context GPT-5.6 Luna · Azure$0.20 in / $1.20 out per 1M1.05M context GPT-5.6 Sol · Azure$3.00 in / $15.00 out per 1M1.05M context GPT-5.6 Terra · Azure$1.50 in / $9.00 out per 1M1.05M context GPT-6.1 Sol · Azure$1.50 in / $7.50 out per 1M1.05M context GPT-6 Astra · Azure$7.50 in / $37.50 out per 1M1.05M context GPT-6 Luna · Azure$0.075 in / $0.375 out per 1M1.05M context GPT-6 Sol · Azure$1.50 in / $7.50 out per 1M1.05M context

GPT-6 Luna at a glance

GPT-6 Luna (model ID openai/gpt-6-luna) is a GPT-series text model on Router One. GPT-6 Luna is priced in whole-request tiers. Request input ≤ 272,000 tokens: Input $0.10 / 1M tokens, Output $0.50 / 1M tokens, Cache write $0.125 / 1M tokens, Cached input $0.01 / 1M tokens; request input > 272,000 tokens: Input $0.20 / 1M tokens, Output $0.75 / 1M tokens, Cache write $0.25 / 1M tokens, Cached input $0.02 / 1M tokens. The total input tokens in each request select the tier; its rates apply to the whole request, not only tokens above the threshold. No Router One subscription plan includes GPT-6 Luna today; every call bills the wallet at its posted rate. Context window: 1.05M tokens. Accepts text, image; returns text. Endpoints: POST /v1/chat/completions (OpenAI-compatible), POST /v1/responses (Responses API, the Codex CLI path).

GPT-6 Luna FAQ

How much does GPT-6 Luna cost on Router One?

GPT-6 Luna is priced in whole-request tiers. Request input ≤ 272,000 tokens: Input $0.10 / 1M tokens, Output $0.50 / 1M tokens, Cache write $0.125 / 1M tokens, Cached input $0.01 / 1M tokens; request input > 272,000 tokens: Input $0.20 / 1M tokens, Output $0.75 / 1M tokens, Cache write $0.25 / 1M tokens, Cached input $0.02 / 1M tokens. The total input tokens in each request select the tier; its rates apply to the whole request, not only tokens above the threshold.

Is GPT-6 Luna included in Router One subscriptions?

No Router One subscription plan includes GPT-6 Luna today; every call bills the wallet at its posted rate.

Which endpoints serve GPT-6 Luna?

GPT-6 Luna is served on 2 endpoints — POST /v1/chat/completions (OpenAI-compatible), POST /v1/responses (Responses API, the Codex CLI path). The same Router One API key works on each.

What is GPT-6 Luna's context window?

GPT-6 Luna accepts up to 1.05M tokens of context per request on Router One.

Start using GPT-6 Luna

Create an API key and call GPT-6 Luna at $0.10 in / $0.50 out per 1M tokens (request input ≤ 272,000 tokens) on Router One — pay as you go, with per-request cost and latency visibility.

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