GPT-6 Luna Pro: API pricing, providers and specs
GPT-6 Luna Pro is a text model by OpenAI. One provider serves it: OpenRouter, at $0.50 /1M.
Lowest price$0.50/1Mat OpenRouter
Maker's price—The maker does not sell it
Providers1
Context1.05MMax output 128K
How GPT-6 Luna Pro compares
Against the 737 text models on the site priced the same way.
- Mid-priced: its lowest price is $0.50 /1M against a median of $1.10; 34% of comparable models cost less.
- Its 1.05M-token context window is larger than 95% of them (median 262K), about 1580 pages of text.
- 1 providers serve it; 0% of comparable models have fewer.
GPT-6 Luna Pro prices by provider
Every provider's list price, read from its own price page or API. A price marked “from” changes with context length, resolution or mode.
| Provider | Input | Output | Prompt caching | Context |
|---|---|---|---|---|
| OpenRouter | $0.10/1M | From$0.50/1M | $0.01/1M | 1.05M |
Prices in US dollars, updated daily from each provider. Prices last checked Oct 25, 2026.
Specs
- Type
- Text
- Maker
- OpenAI
- Inputs
- Image, Text
- Outputs
- Text
- Context
- 1.05M≈ 1580 pages of text
- Max output
- 128K
- Capabilities
- Prompt caching, JSON, Reasoning, Tool calling, Vision
- Released
- Sep 22, 2026
- License
- —
- Open weights
- —
Alternatives to GPT-6 Luna Pro
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| GPT-6 Luna Prothis model | $0.50/1M | 1.05M | — | 1 |
 GLM-5.3 | $1.10/1M | 1.05M | 1623 | 49 |
| GLM-5.3-Flash | $0.20/1M | 1.05M | 1608 | 45 |
 Qwen3.8 27B | $0.50/1M | 262K | 1591 | 33 |
 Sonar | $1/1M | 127K | — | 9 |
| Claude Haiku 5.5 | $0.30/1M | 1M | 1585 | 27 |
 MiMo-V2.6-Pro | $0.696/1M | 1.05M | 1625 | 21 |
| Qwen3.8 Flash Next | $0.376/1M | 262K | 1628 | 5 |
 DeepSeek V4 Flash | $0.17/1M | 1.05M | — | 26 |
More from OpenAI
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All 123 OpenAI modelsGPT-6 Luna Pro FAQ
The lowest price for GPT-6 Luna Pro is $0.50 /1M, at OpenRouter.
GPT-6 Luna Pro reads up to 1.05M tokens per request and writes up to 128K.
We have not found GPT-6 Luna Pro's weights published by its maker.
1 API providers serve GPT-6 Luna Pro. Compare their prices above, or open a provider to see everything it offers.
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