Cheapest GPT-6 Luna API: XCLI is 93% below the official price
GPT-6 Luna costs $0.100/$0.500 per 1M tokens from OpenAI. The lowest quote in the index is XCLI: $0.007 in, $0.035 out. Full table and buying checklist below.
| # | Provider | 1M input | 1M output | Discount | Tokens per $100 |
|---|---|---|---|---|---|
| — | Official list | $0.100 | $0.500 | 0% | 600M |
| 1 | $0.0070 | $0.035 | −93% | 8.57B | |
| 2 | $0.040 | $0.150 | −65% | 1.71B | |
| 3 | $0.073 | $0.367 | −27% | 817M | |
| 4 | $0.150 | $0.800 | +55% | 387M |
Tokens per $100 assume a “code” mix: 5 input tokens per output token. Prices are crawled; verify them on the provider page before buying.
What to check before buying
- Test the key with the free API checker — it verifies the endpoint responds, without sending tokens.
- Compare the blended cost for your workload, not just the input price: output tokens dominate in agent workloads.
- Check uptime and minimum top-up: the cheapest provider is useless if it is down half the day.