Model comparison · updated 2026-10-02
Side-by-side pricing for1 million tokens
| Gemini 3.1 Pro | GPT-6 Luna | Verdict | |
|---|---|---|---|
| Provider | OpenAI | -- | |
| Context window | 1M | 1.05M | -- |
| Input / 1M tokens | $2 | $0.10 | GPT-6 Luna is 20x cheaper |
| Output / 1M tokens | $12 | $0.50 | GPT-6 Luna is 24x cheaper |
| Output:input ratio | 6x | 5x | -- |
| Tier | flagship | budget | -- |
Gemini 3.1 Pro: Prices rise to $4 / $18 for prompts above 200K tokens.
Gemini 3.1 Pro
5,000,000 tokens
GPT-6 Luna
100,000,000 tokens
GPT-6 Luna gives you 20x more input for the same budget.
Gemini 3.1 Pro
833,333 tokens
GPT-6 Luna
20,000,000 tokens
GPT-6 Luna gives you 24x more output for the same budget.