OpenAIGPT-6 Luna Pro
GPT-6 Luna Pro is an OpenAI proprietary reasoning model, released 22 Sept 2026. It is not yet ranked: no independent benchmark results so far, only pricing and metadata. At $0.200 per million tokens blended it is cheaper than most ranked models. Output speed of 127 tokens per second puts it faster than most, with a first token in 10.1 s.
- Blended price
- $0.200/M
- $0.100 in · $0.500 out
- Output speed
- 127 tok/s
- OpenRouter traffic, 7-day median; not yet measured by Artificial Analysis
- First answer
- 10 s
- Context
- 1.1M
- Full answer
- –
- Cost per run
- –
- Released
- 22 Sept 2026
Versions
OpenAI has shipped 2 models under this name. Each is ranked on its own results; a newer version often has fewer results so far, which holds its index nearer the average until more arrive.
| Model | Released | Index | Rank |
|---|---|---|---|
| NewGPT-6 Luna Prothis page | 22 Sept 2026 | – | – |
| GPT-5.6 Luna Pro | – | – | – |
No independent quality benchmark results yet — only pricing and metadata.
Where to run it
Every provider serving this model through OpenRouter, with throughput and first-token latency measured on live traffic over the last 30 minutes and each provider’s own price. Purple marks the best in each column.
| Provider | Speed | First token | Input $/M | Output $/M | Context | Quantisation |
|---|---|---|---|---|---|---|
| OpenAI | 144 tok/s | 13 s | $0.050 | $0.250 | 1.1M | – |
| OpenAI | 127 tok/s | 10 s | $0.100 | $0.500 | 1.1M | – |
| Azure | 68 tok/s | 9.05 s | $0.100 | $0.500 | 1.1M | – |
What a task costs
Estimates from list price, output speed and time to first answer for the best configuration. “With caching” assumes three-quarters of the input is served from the prompt cache. Reasoning tokens are not modelled.
| Workload | Tokens in / out | Cost | With caching | Time |
|---|---|---|---|---|
| Chat reply | 400 / 300 | $0.0002 | – | 12.5 s |
| Summarise a 30-page report | 12,000 / 600 | $0.0015 | – | 14.9 s |
| Code edit | 6,000 / 1,500 | $0.0014 | – | 22.0 s |
| Agentic coding session | 60,000 / 4,000 | $0.0080 | – | 41.6 s |
| Structured extraction | 2,000 / 200 | $0.0003 | – | 11.7 s |
See also
Data as of 23 Sept 2026. Compare with another model.
Cite as: BenchLeader, “GPT-6 Luna Pro: benchmarks, pricing, speed and rank”, https://www.benchleader.com/models/gpt-6-luna-pro, data as of 23 Sept 2026.