OpenAI's most efficient model for focused, high-volume tasks
GPT-6 Luna by openai is offered by 11 providers on this page. Its official list price is $0.10 per 1M input tokens and $0.50 per 1M output tokens. The lowest paid channel is NanoGPT at $0.05 / $0.25 per 1M, about 2.5× below the list price. That channel is a third-party gateway, so confirm its availability and rate limits before depending on it.
Artificial Analysis rates it 37.3 on the Intelligence Index. Against its lowest blended price of $0.10 per 1M, that is roughly 373 index points per dollar, which is the value ratio the leaderboards rank on. Median output speed is 154 tokens per second, with 124.23s to the first token. Running one task of the Artificial Analysis suite costs about $0.0681, which reflects how many tokens its reasoning consumes rather than the unit price alone.
The context window is 1,050,000 tokens, with an output limit of 128,000 tokens. It supports reasoning, tool use, and structured output. Accepted input modalities are Text, Image, and PDF. Its training knowledge cuts off at 2026-05-18.
Quality is independently evaluated by Artificial Analysis. Speed/latency are model-level medians.
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| NanoGPT | Gateway | $0.05 | $0.25 | $0.005 | $0.063 | 1,050,000 | 128,000 | |
| Vercel AI Gateway | Cloud | $0.10 tiered >272K: $0.20 | $0.50 | $0.01 | $0.13 | 1,050,000 | 128,000 | |
| DevPass (LLM Gateway) | Gateway | $0.10 | $0.50 | $0.01 | $0.13 | 1,050,000 | 128,000 | |
| Kilo Gateway | Gateway | $0.10 | $0.50 | $0.01 | $0.13 | 1,050,000 | 128,000 | |
| Azure | Cloud | $0.10 tiered >272K: $0.20 | $0.50 | $0.01 | $0.13 | 1,050,000 | 128,000 | |
| Merge Gateway | Gateway | $0.10 | $0.50 | $0.01 | $0.13 | 1,050,000 | 128,000 | |
| OpenCode Zen | Gateway | $0.10 tiered >272K: $0.20 | $0.50 | $0.01 | $0.13 | 1,050,000 | 128,000 | |
| OpenRouter | Gateway | $0.10 tiered >272K: $0.20 | $0.50 | $0.01 | $0.13 | 1,050,000 | 128,000 | |
| OpenAIOfficial | First-party | $0.10 tiered >272K: $0.20 | $0.50 | $0.01 | $0.13 | 1,050,000 | 128,000 | |
| LLM Gateway | Gateway | $0.10 | $0.50 | $0.01 | $0.13 | 1,050,000 | 128,000 | |
| Venice AI openai-gpt-6-luna | Gateway | $0.13 tiered >272K: $0.25 | $0.63 | $0.013 | $0.16 | 1,050,000 | 128,000 |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
| Mode | Provider | Input | Output | Cache read | Cache write |
|---|---|---|---|---|---|
| fast | OpenAI | $0.20 | $1.00 | $0.02 | $0.25 |
| pro | OpenAI | — | — | — | — |
Price history accumulates from each data sync; currently only 1 sample(s) (2026-09-23). Each future sync adds a point, and once accumulated a line is drawn here.
Individual evaluations run by Artificial Analysis, on the same reasoning tier as the intelligence score above. Each benchmark has its own task set and harness, so rows are not comparable with one another. The Intelligence Index above draws on a different, newer set of evaluations.