GPT-6 Luna Pro is cheaper than Claude 3 Sonnet at $0.1/M vs $3/M input tokens.
| Spec | Claude 3 Sonnet | GPT-6 Luna Pro |
|---|---|---|
| Input price | $3/M tokens | $0.1/M tokens |
| Output price | $15/M tokens | $0.5/M tokens |
| Context window | — | 1.1M tokens |
| Weights | — | Closed |
| Free API (OpenRouter) | No | No |
| Released | Mar 2024 | Sep 2026 |
Not enough votes to call it. On the specs, nothing separates them.
GPT-6 Luna Pro costs 30x less per token.
Reviewing agent-written code?See a Brief PR report
GPT-6 Luna Pro is cheaper on both: 30× input, 30× output.
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 25 Sep 2026.