Model comparison · updated 2026-10-02
Side-by-side pricing for1 million tokens
| GPT-6 Astra | Gemini 3.1 Pro | Verdict | |
|---|---|---|---|
| Provider | OpenAI | -- | |
| Context window | 1.05M | 1M | -- |
| Input / 1M tokens | $10 | $2 | Gemini 3.1 Pro is 5x cheaper |
| Output / 1M tokens | $50 | $12 | Gemini 3.1 Pro is 4.2x cheaper |
| Output:input ratio | 5x | 6x | -- |
| Tier | frontier | flagship | -- |
Gemini 3.1 Pro: Prices rise to $4 / $18 for prompts above 200K tokens.
GPT-6 Astra
1,000,000 tokens
Gemini 3.1 Pro
5,000,000 tokens
Gemini 3.1 Pro gives you 5x more input for the same budget.
GPT-6 Astra
200,000 tokens
Gemini 3.1 Pro
833,333 tokens
Gemini 3.1 Pro gives you 4.2x more output for the same budget.