OpenAI: GPT-6 Luna Pro
The OpenAI GPT-6 Luna Pro is a general-purpose AI model that supports multiple input modalities, including text, image, and file inputs. It has a large context length of 1.05 million tokens, allowing for extended conversations or document processing tasks. This model may be worth considering by those who require multi-modal inputs and have a budget to match its price point. The $0.1 per million input token charge is relatively low, but the $0.5 per million output token fee increases with usage. Currently, there is no independent benchmark coverage for this model, so its performance relative to others in the field remains unproven.
- Model ID
- openai/gpt-6-luna-pro
- Vendor
- openai
- Released
- September 2026
- Tokenizer
- GPT
- Input Modalities
- file, image, text
- Output Modalities
- text
- Max Output
- 128,000 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- ✓ accepts images
- Audio
- no
- Moderated
- yes
What it costs in practice
Computed from the current $0.10/M input and $0.50/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | under $0.01 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.08 |
| A month of a busy support chatbot | 5M in / 2M out | $1.50 |
Category rankings
Where OpenAI: GPT-6 Luna Pro places across the 4 categories it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #12 | Social Media PostsWriting · of 25 ranked | 119 |
| #12 | Voice Assistant BackendVoice · of 25 ranked | 123 |
| #19 | JSON ExtractionData · of 25 ranked | 131 |
| #21 | Customer SupportBusiness · of 25 ranked | 127 |
Similar models
OpenAI: GPT-6 Luna Pro (batch)
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Quick answers
- How much does OpenAI: GPT-6 Luna Pro cost?
- $0.10 per million input tokens and $0.50 per million output tokens.
- What is OpenAI: GPT-6 Luna Pro's context window?
- 1,050,000 tokens, roughly 1,575 pages of text in a single request.
- Does OpenAI: GPT-6 Luna Pro support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can OpenAI: GPT-6 Luna Pro process images?
- Yes, it accepts image input.