openai/gpt-6-luna
GPT-6 Luna is the lightweight model in the GPT-6 family and its lowest-cost option, built for high-volume work with a clear goal — summarization, extraction, routing, and straightforward Q&A. It keeps the 1.05M-token context window (922K max input), image input, tools, and reasoning effort from none through max. Prompt caching is supported, and cache reads bill at one tenth of input.
Source: openai_2026_09_gpt6_g6l_x0.30 · Verified 2026-09-23
Cache read $0.003/M · Cache write $0.0375/M
| Tier | Input | Cache read | Cache write | Output |
|---|---|---|---|---|
| Standard ≤272K | $0.03 | $0.003 | $0.0375 | $0.15 |
| Standard >272K | $0.06 | $0.006 | $0.075 | $0.225 |
Use either ID to call this model via the API.
openai/gpt-6-lunaReplace the ONEHOP_KEY placeholder with your API key. Create one →
from openai import OpenAI
client = OpenAI(
base_url="https://api.onehop.ai/v1",
api_key="<ONEHOP_KEY>",
)
completion = client.chat.completions.create(
model="openai/gpt-6-luna",
messages=[{"role": "user", "content": "What is the meaning of life?"}],
)
print(completion.choices[0].message.content)9 requests · last 30 days