GPT-6 Luna
GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol.
Model by OpenAI
Install
Pick your client. Read the repository before you give any tool access to your data.
{
"model": "openai/gpt-6-luna",
"baseURL": "https://openrouter.ai/api/v1"
}OpenAI-compatible API: point any OpenAI SDK at the base URL and use this model id.
Settings it needs
OPENROUTER_API_KEYrequiredsecret
Get the weekly diff
The weekly diff: one email a week with new agent tools, notable updates and grade changes, plus security alerts for tools you follow. Double opt-in, one-click unsubscribe.
About
Use cases: model-inference
Reviews
Write a reviewNo reviews yet. Installed it? Reviews come from verified installers only. How reviews work
Price and limits
| Variant | Input $/M tokens | Output $/M tokens | Cached input $/M |
|---|---|---|---|
| Standard | $0.1 | $0.5 | $0.01 |
Batch API openai/gpt-6-luna:batch | $0.05 | $0.25 | — |
Price as of Oct 26, 2026 from OpenRouter · provider's own prices: openai.com. Prices change often; check before you rely on one.
- Provider
- OpenAI
- Model id
openai/gpt-6-luna- Context window
- 1,050,000 tokens (1.1M)
- Max output
- 128,000 tokens
- Input
- file, image, text
- Output
- text
- Tool calling
- Yes
- Structured outputs
- Yes
- Reasoning
- Yes
- Weights
- Closed
- Released
- Sep 22, 2026
- Also served as
~openai/gpt-luna-latest
Details
- Auth
- API key
- License
- Proprietary
- Website
- openai.com
- First seen
- Oct 24, 2026
- Last checked
- Oct 26, 2026
- Source
- OpenRouter
More from OpenAI
- 0.708score
security-review-openai
OpenAI
Perform language and framework specific security best-practice reviews and suggest improvements.
SkillBFreshness: B★ 895Claude Code +9 - 0.708score
xlsx-processing-openai
OpenAI
Toolkit for comprehensive Spreadsheet reading, creation, editing, and analysis with visual quality control.
SkillBFreshness: B★ 895Claude Code +9 - 0.708score
docx-processing-openai
OpenAI
Toolkit for comprehensive document reading, editing, and creation with visual quality control.
SkillBFreshness: B★ 895Claude Code +9 - 0.704score
skill-creator-openai
OpenAI
Guide for creating effective skills.
SkillBFreshness: B★ 895Claude Code +9 - 0.703score
pdf-processing-openai
OpenAI
Toolkit for comprehensive PDF reading, reviwing, and creation with visual quality control.
SkillBFreshness: B★ 895Claude Code +9 - 0.695score
OpenAI Codex
OpenAI
OpenAI's coding agent for the terminal, editor, desktop app and ChatGPT cloud, included in ChatGPT plans
AgentAFreshness: A★ 130.8K↓ 13.1M/wk
Cite this page
GPT-6 Luna: price, context window, tool use. Agent Mart. https://agentmart.dev/models/openai-gpt-6-luna (last updated 2026-10-26)