Model comparison
Gemini 3.1 Pro vs Gemini 3 Pro
- Input
- $2.00
- Output
- $12.00
- Context
- 1M
- Released
- 2026-02-19
- Input
- $2.00 / 1M tokens (prompts ≤ 200K; $4.00 above 200K)
- Output
- $12.00 / 1M tokens (prompts ≤ 200K; $18.00 above 200K)
- Context
- 1M
- Released
- 2025-11-18
Gemini 3.1 Pro scores higher on 4 of the 4 benchmarks both models report; both charge the same $2 per 1M input tokens.
Specs and pricing side by side
| Spec | Gemini 3.1 Pro | Gemini 3 Pro |
|---|---|---|
| Maker | Googlesame | |
| Released | 2026-02-19 | 2025-11-18 |
| Context window | 1M | 1Msame |
| Max output | 64K | 64Ksame |
| Input price | $2.00 | $2.00 / 1M tokens (prompts ≤ 200K; $4.00 above 200K) |
| Output price | $12.00 | $12.00 / 1M tokens (prompts ≤ 200K; $18.00 above 200K) |
| Parameters | Undisclosed | not published |
| License | Proprietary | Proprietarysame |
| Weights | API only | API onlysame |
| Modalities | Text, Vision, Audio, Video, PDF | Text, Vision, Audio, Video, PDFsame |
| Knowledge cutoff | January 2025 | January 2025same |
Benchmarks both models report
| Benchmark | Gemini 3.1 Pro | Gemini 3 Pro |
|---|---|---|
| GPQA Diamond | 94.3% | 91.9% |
| SWE-Bench Verified | 80.6% | 76.2% |
| Humanity's Last Exam | 44.4% | 37.5% |
| Terminal-Bench 2.0 | 68.5% | 54.2% |
Scores are as published by each maker or its cited source; harness, reasoning effort and date can differ between rows, so treat small gaps as ties. Sources are listed on each model page.
Which one should you pick?
Pick Gemini 3.1 Pro if…
- You care about GPQA Diamond, SWE-Bench Verified, Humanity's Last Exam (it scores higher on 4 shared benchmarks).
- Your use case is: agentic workflows and multi-step tool use.
Pick Gemini 3 Pro if…
- Your use case is: complex multi-step reasoning and analysis over long documents or research material.
FAQ
Which is better, Gemini 3.1 Pro or Gemini 3 Pro?
Gemini 3.1 Pro scores higher on 4 of the 4 benchmarks both models report; both charge the same $2 per 1M input tokens. The better pick depends on whether you value benchmark scores, price per token, context length or openness for your workload.
How do Gemini 3.1 Pro and Gemini 3 Pro pricing compare?
Gemini 3.1 Pro: $2.00 input, $12.00 output. Gemini 3 Pro: $2.00 / 1M tokens (prompts ≤ 200K; $4.00 above 200K) input, $12.00 / 1M tokens (prompts ≤ 200K; $18.00 above 200K) output (list API prices as published by each maker).
What are the context windows of Gemini 3.1 Pro and Gemini 3 Pro?
Gemini 3.1 Pro offers 1M with up to 64K output; Gemini 3 Pro offers 1M with up to 64K output.
Is Gemini 3.1 Pro newer than Gemini 3 Pro?
Gemini 3.1 Pro was released 2026-02-19; Gemini 3 Pro was released 2025-11-18.