OpenAIText generation

GPT-6 Luna

Name: GPT-6 Luna
Brand: OpenAI
SKU: gpt-6-luna
Availability: InStock

GPT-6 Luna costs $0.075 per 1M input tokens and $0.375 per 1M output tokens on LLM API, with a 1.05M-token context window.

Pricing

Lowest price among 3 providers, after discounts.

GPT-6 Luna prices on LLM API
Input	$0.075	per 1M tokens
Output	$0.375	per 1M tokens
Cache read	$0.0075	per 1M tokens
Cache write, 5 minutes	$0.0938	per 1M tokens

Providers

Prices after each provider’s discount; the lowest in bold.

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Providers of GPT-6 Luna on LLM API

Azure	$0.1	$0.5	$0.01	1.05M	128K
Novita AI−25% discount	$0.075	$0.375	$0.0075	1.05M	128K
OpenAI	$0.1	$0.5	$0.01	1.05M	128K

Features

ToolsYes
Parallel tool callsNo
Image inputYes
ReasoningYes
Levels: none, low, medium, high, xhigh
Prompt cachingYes
Structured outputsYes
JSON modeYes
StreamingYes
Web searchYes
BatchYes

Call GPT-6 Luna

POST /v1/responsesSet LLMAPI_KEY to your LLM API key.Responses docs

import os

from openai import OpenAI

client = OpenAI(
    base_url="https://api.llmapi.ai/v1",
    api_key=os.environ["LLMAPI_KEY"],
)

response = client.responses.create(
    model="gpt-6-luna",
    input="Hello",
)
print(response.output_text)

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.llmapi.ai/v1",
  apiKey: process.env.LLMAPI_KEY,
});

const response = await client.responses.create({
  model: "gpt-6-luna",
  input: "Hello",
});
console.log(response.output_text);

curl https://api.llmapi.ai/v1/responses \
  -H "Authorization: Bearer $LLMAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "gpt-6-luna", "input": "Hello"}'

POST /v1/chat/completionsSet LLMAPI_KEY to your LLM API key.Chat Completions docs

import os

from openai import OpenAI

client = OpenAI(
    base_url="https://api.llmapi.ai/v1",
    api_key=os.environ["LLMAPI_KEY"],
)

response = client.chat.completions.create(
    model="gpt-6-luna",
    messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.llmapi.ai/v1",
  apiKey: process.env.LLMAPI_KEY,
});

const response = await client.chat.completions.create({
  model: "gpt-6-luna",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(response.choices[0].message.content);

curl https://api.llmapi.ai/v1/chat/completions \
  -H "Authorization: Bearer $LLMAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-6-luna",
    "messages": [{"role": "user", "content": "Hello"}]
  }'

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Prices synced November 9, 2026.