Gemini 3.1 Pro Preview vs GPT-5 Pro
Gemini 3.1 Pro Preview costs 10.0x less per output token.
Which Is Cheaper?
At 1M tokens/mo
Gemini 3.1 Pro Preview: $7
GPT-5 Pro: $68
At 10M tokens/mo
Gemini 3.1 Pro Preview: $70
GPT-5 Pro: $675
At 100M tokens/mo
Gemini 3.1 Pro Preview: $700
GPT-5 Pro: $6750
Which Performs Better?
| Test | Gemini 3.1 Pro Preview | GPT-5 Pro |
|---|---|---|
| Structured Output | — | — |
| Strategic Analysis | — | — |
| Constrained Rewriting | — | — |
| Creative Problem Solving | — | — |
| Tool Calling | — | — |
| Faithfulness | — | — |
| Classification | — | — |
| Long Context | — | — |
| Safety Calibration | — | — |
| Persona Consistency | — | — |
| Agentic Planning | — | — |
| Multilingual | — | — |