OpenAI · Efficient
GPT-6 Luna
OpenAI's efficient tier for focused, high-volume work, at ten cents per million input tokens. Half the input price of GPT-5.6 Luna and well under half the output price.
Model ID: gpt-6-luna
What that means
A worked example
Per-token pricing is hard to feel. Take a moderately chatty production workload: 100 calls a day, roughly 10,000 tokens in and 2,000 out each time. On GPT-6 Luna that comes to about:
$6 / month
Before caching, batching or volume discounts, all of which move this number a long way. Illustrative only.
Strong at
- -Very low cost
- -High throughput
- -Supports none reasoning effort
Typical use
- -Classification
- -Bulk processing
- -Typed extraction (Decisions API beta)
Same tier
What else to look at
| Model | Developer | Context | In / 1M | Out / 1M |
|---|---|---|---|---|
| Claude Haiku 5.5 | Anthropic | 1M | $0.10 | $0.50 |
| Claude Haiku 4.5 | Anthropic | 200K | $1 | $5 |
| GPT-5.6 Luna | OpenAI | 1.05M | $0.20 | $1.20 |
| Gemini 3.5 Flash-Lite | 1.05M | $0.30 | $2.50 | |
| DeepSeek V4.1 Flash | DeepSeek | 1M | $0.30 | $1.20 |
Verified 2026-10-11.