OpenAI Codex Mini is cheaper than GPT-6 Sol Pro at $1.5/M vs $2/M input tokens.
| Spec | OpenAI Codex Mini | GPT-6 Sol Pro |
|---|---|---|
| Input price | $1.5/M tokens | $2/M tokens |
| Output price | $6/M tokens | $10/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 Sol Pro has the edge: bigger model tier, newer, bigger context window.
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OpenAI Codex Mini is cheaper on both: 1.3× input, 1.7× output.
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Per million tokens. Prices and uptime via OpenRouter, checked 25 Sep 2026.