Gemini 3.8 Flash is 3.1× cheaper per million tokens (blended). Gemini 3.8 Flash leads quality index by 5.8 points (85.1 vs 79.3).
Gemini 3.1 Pro Preview vs Gemini 3.8 Flash
Live catalog fields. Best-in-row is highlighted.
Gemini 3.1 Pro Preview
Google · google__gemini-3.1-pro-preview
Gemini 3.8 Flash
Google · google__gemini-3.8-flash
Identity
| Field | google__gemini-3.1-pro-preview | google__gemini-3.8-flash |
|---|---|---|
| Provider | ||
| Slug | google__gemini-3.1-pro-preview | google__gemini-3.8-flash |
| Status | live | live |
| Open weights | No | No |
| License | — | — |
| HuggingFace | — | — |
Quality
| Field | google__gemini-3.1-pro-preview | google__gemini-3.8-flash |
|---|---|---|
| Quality index (0–100) | 79.3 | 85.1 |
Cost
| Field | google__gemini-3.1-pro-preview | google__gemini-3.8-flash |
|---|---|---|
| Input $ / 1M tokens | $2.00 | $0.75 |
| Cached input $ / 1M | $0.20 | $0.07 |
| Output $ / 1M tokens | $12.00 | $3.75 |
Context
| Field | google__gemini-3.1-pro-preview | google__gemini-3.8-flash |
|---|---|---|
| Max context tokens | 1,048,576 | 1,048,576 |
| Max output tokens | 65,536 | 65,536 |
Modalities
| Field | google__gemini-3.1-pro-preview | google__gemini-3.8-flash |
|---|---|---|
| Input | audio, file, image, text, video | text, image, video, file, audio |
| Output | text | text |