OpenAI
GPT-6 Luna
OpenAI's efficient GPT-6 model for focused, high-volume workloads
Context Length1,050,000 tokens
Max Output128K tokens
MultimodalText and image input; text output
Pricing & Specs
๐ฐ Pricing
Input$0.10 / M tokens
Output$0.50 / M tokens
Cache Write$0.125 / M tokens
Cache Hit$0.01 / M tokens
โ๏ธ Specs
Context Length1,050,000 tokens
Max Output128K tokens
MultimodalText and image input; text output
API CompatibilityResponses API; Chat Completions API
Reasoning Effortnone, low, medium (default), high, xhigh, max
Tool CallingUse Responses API for reasoning with tools; Chat Completions tool calls require reasoning_effort=none
Short-context Pricing (โค272K input)Input $0.10; cached input $0.01; cache write $0.125; output $0.50 / M tokens
Long-context Pricing (>272K input)Input $0.20; cached input $0.02; cache write $0.25; output $0.75 / M tokens for the full request
Fast Mode2x the applicable token rates, including long-context pricing
Release DateSeptember 22, 2026
Knowledge CutoffMay 18, 2026
API Examples
Python
from openai import OpenAI
client = OpenAI(api_key="YOUR_API_KEY", base_url="https://api.xairouter.com/v1")
response = client.responses.create(
model="gpt-6-luna",
input="Explain this code and suggest improvements.",
)
print(response.output_text)
cURL
curl https://api.xairouter.com/v1/responses \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"gpt-6-luna","input":"Hello!"}'
Official references (verified September 23, 2026): GPT-6 Luna ยท OpenAI Pricing.