OpenAI: GPT-6 Luna Pro pricing
GPT-6 Luna Pro is the same underlying model as GPT-6 Luna, served with reasoning.mode set to pro for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning reasoning-mode OpenAI: GPT-6 Luna Pro from OpenRouter costs $0.100 per 1M input tokens and $0.500 per 1M output tokens. Cached input is $0.010 per 1M. Context window 1,050,000 tokens.
API id openai/gpt-6-luna-pro · OpenRouter · source · updated 2026-09-25 · general-purpose
$0.100
Input / 1M tokens
$0.500
Output / 1M tokens
$0.010
Cached input / 1M
1.1M
Context window
OpenAI: GPT-6 Luna Pro specifications
- Provider
- OpenRouter
- API id
openai/gpt-6-luna-pro- Model type
- general-purpose
- Context window
- 1.1M tokens
- Max output
- 128K tokens
- Currency
- USD
- Price source
- Provider API
- Last checked
- 2026-09-25
Tags
- flagship
- vision
What OpenAI: GPT-6 Luna Pro costs in practice
| Workload | Input tokens | Output tokens | Estimated cost |
|---|---|---|---|
| Short chat turn | 1,000 | 500 | $0.0003 |
| Document summary | 50,000 | 2,000 | $0.0060 |
| 1M tokens in, 200K out | 1,000,000 | 200,000 | $0.20 |
Estimates use the standard tier and ignore caching discounts, so real bills with repeated prompt prefixes are typically lower.
Common questions
- How much does OpenAI: GPT-6 Luna Pro cost per 1M tokens?
- OpenAI: GPT-6 Luna Pro costs $0.100 per 1M input tokens and $0.500 per 1M output tokens on the standard tier. Cached input is $0.010 per 1M.
- What is OpenAI: GPT-6 Luna Pro's context window?
- OpenAI: GPT-6 Luna Pro accepts up to 1,050,000 tokens in a single request, and can return up to 128,000 output tokens.
- Is there a cheaper OpenRouter model than OpenAI: GPT-6 Luna Pro?
- Yes. MythoMax 13B is $0.080 per 1M input tokens versus $0.100 for OpenAI: GPT-6 Luna Pro, with a 8,192 token context window.
- Where does this OpenAI: GPT-6 Luna Pro price come from?
- From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.
Head-to-head comparisons
Other OpenRouter models
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- SpaceXAI: Grok 4.7 $1.60