Gemini-3.1-Pro vs GPT-5.3-Instant
Gemini-3.1-Pro is cheaper on output tokens, while Gemini-3.1-Pro offers a larger context window. Choose Gemini-3.1-Pro or GPT-5.3-Instant based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Gemini-3.1-Pro | GPT-5.3-Instant |
|---|---|---|
| Provider | Poe | Poe |
| Input / 1M tokens | $2.02 | $1.60 |
| Output / 1M tokens | $12.12 | $13.00 |
| Context window | 1M | 128K |
| Parameters | — | — |
| Open weights | No | No |
| Released | Feb 2026 | Mar 2026 |
| LiveBench score | 80.7 | 59.8 |
| Epoch Capabilities Index score | 155 | — |
FAQ
Is Gemini-3.1-Pro or GPT-5.3-Instant cheaper?
Gemini-3.1-Pro is cheaper on output tokens ($12.12 vs $13.00 per 1M).
Which has the larger context window, Gemini-3.1-Pro or GPT-5.3-Instant?
Gemini-3.1-Pro has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.