Gemini 3.8 Flash is 7.8× cheaper per million tokens (blended). Gemini 3.8 Flash leads quality index by 5.3 points (87.1 vs 81.8). GPT-5.5 has the larger context window (1,050,000 vs 1,048,576 tokens).
Gemini 3.8 Flash vs GPT-5.5
Live catalog fields. Best-in-row is highlighted.
Gemini 3.8 Flash
Google · google__gemini-3.8-flash
GPT-5.5
OpenAI · openai__gpt-5.5
Identity
| Field | google__gemini-3.8-flash | openai__gpt-5.5 |
|---|---|---|
| Provider | OpenAI | |
| Slug | google__gemini-3.8-flash | openai__gpt-5.5 |
| Status | live | live |
| Open weights | No | No |
| License | — | — |
| HuggingFace | — | — |
Quality
| Field | google__gemini-3.8-flash | openai__gpt-5.5 |
|---|---|---|
| Quality index (0–100) | 87.1 | 81.8 |
Cost
| Field | google__gemini-3.8-flash | openai__gpt-5.5 |
|---|---|---|
| Input $ / 1M tokens | $0.75 | $5.00 |
| Cached input $ / 1M | $0.07 | $0.50 |
| Output $ / 1M tokens | $3.75 | $30.00 |
Context
| Field | google__gemini-3.8-flash | openai__gpt-5.5 |
|---|---|---|
| Max context tokens | 1,048,576 | 1,050,000 |
| Max output tokens | 65,536 | 128,000 |
Modalities
| Field | google__gemini-3.8-flash | openai__gpt-5.5 |
|---|---|---|
| Input | text, image, video, file, audio | file, image, text |
| Output | text | text |