GPT-6 Luna Pro is cheaper than OpenAI Codex Mini at $0.1/M vs $1.5/M input tokens.
| Spec | OpenAI Codex Mini | GPT-6 Luna Pro |
|---|---|---|
| Input price | $1.5/M tokens | $0.1/M tokens |
| Output price | $6/M tokens | $0.5/M tokens |
| Context window | 200K tokens | 1.1M tokens |
| Weights | — | Closed |
| Free API (OpenRouter) | No | No |
| Released | May 2025 | Sep 2026 |
Not enough votes to call it. On the specs, GPT-6 Luna Pro has the edge: bigger model tier, newer, bigger context window.
GPT-6 Luna Pro costs 12x less per token.
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GPT-6 Luna Pro is cheaper on both: 15× input, 12× output.
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Per million tokens. Prices and uptime via OpenRouter, checked 25 Sep 2026.