High-volume, cost-sensitive work
Either one
Both cost $0.20 per million tokens on a typical mix of three input tokens for every output token.
GPT-6 Luna vs GPT-6 Luna Pro: price, context and capabilities
A side-by-side comparison of GPT-6 Luna (OpenAI) and GPT-6 Luna Pro (OpenAI), from the published prices and specifications.
In short
- Both cost the same at the headline price ($0.20 / 1M tokens).
- Both accept 1.05M tokens per request.
- Only GPT-6 Luna offers batch api.
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Monthly cost at three volumes
| Volume | GPT-6 Luna | GPT-6 Luna Pro | Difference |
|---|---|---|---|
| Prototype: 1M input, 250K output tokens | $0.23 | $0.23 | = |
| Production: 20M input, 5M output tokens | $4.50 | $4.50 | = |
| Scale: 500M input, 100M output tokens | $100.00 | $100.00 | = |
Standard rates, without caching or batch discounts. Volumes are per month.
Specifications side by side
| GPT-6 Luna | GPT-6 Luna Pro | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Category | Language models | Language models |
| Status | Generally available | Generally available |
| Headline price | $0.20 / 1M tokens | $0.20 / 1M tokens |
| Input | $0.10 / 1M tokens | $0.10 / 1M tokens |
| Output | $0.50 / 1M tokens | $0.50 / 1M tokens |
| Cached input | $0.01 / 1M tokens | $0.01 / 1M tokens |
| Context window | 1.05M | 1.05M |
| Max output | 128k | 128k |
| Released | Sep 22, 2026 | Sep 22, 2026 |
| Knowledge cutoff | May 2026 | No data |
| Licence | Proprietary | Proprietary |
| Capabilities | Vision, Reasoning, Tool calling, Structured output, Prompt caching, Batch API | Vision, Reasoning, Tool calling, Structured output, Prompt caching |
| API model id | gpt-6-luna | gpt-6-luna-pro |
Benchmarks side by side
Leader in bold.
| Benchmark | GPT-6 Luna | GPT-6 Luna Pro |
|---|---|---|
| Intelligence Index | 38.1 | No data |
| SciCode | 54.6% | No data |
| Humanity's Last Exam | 38.5% | No data |
| MMMU-Pro (visual reasoning) | 79.7% | No data |
| Long-context reasoning (AA-LCR) | 83.3% | No data |
Independent evaluations by Artificial Analysis, run the same way for every model, at the reasoning setting shown. Percentages unless marked as an index.
Frequently asked questions
Which is cheaper, GPT-6 Luna or GPT-6 Luna Pro?
Both cost the same at the headline price ($0.20 / 1M tokens).
Which has the larger context window, GPT-6 Luna or GPT-6 Luna Pro?
Both accept 1.05M tokens per request.
What is the difference between GPT-6 Luna and GPT-6 Luna Pro?
GPT-6 Luna is made by OpenAI and GPT-6 Luna Pro by OpenAI. Both cost the same at the headline price ($0.20 / 1M tokens). Both accept 1.05M tokens per request. Only GPT-6 Luna offers batch api.
How much do GPT-6 Luna and GPT-6 Luna Pro cost per month?
At 20 million input and 5 million output tokens a month, GPT-6 Luna costs $4.50 and GPT-6 Luna Pro costs $4.50, at standard rates.