Claude Sonnet 5.5 is 1.2× cheaper per million tokens (blended). Claude Sonnet 5.5 leads quality index by 13.9 points (93.2 vs 79.3). Gemini 3.1 Pro Preview has the larger context window (1,048,576 vs 1,000,000 tokens).
Claude Sonnet 5.5 vs Gemini 3.1 Pro Preview
Live catalog fields. Best-in-row is highlighted.
Claude Sonnet 5.5
Anthropic · anthropic__claude-sonnet-5.5
Gemini 3.1 Pro Preview
Google · google__gemini-3.1-pro-preview
Identity
| Field | anthropic__claude-sonnet-5.5 | google__gemini-3.1-pro-preview |
|---|---|---|
| Provider | Anthropic | |
| Slug | anthropic__claude-sonnet-5.5 | google__gemini-3.1-pro-preview |
| Status | live | live |
| Open weights | No | No |
| License | — | — |
| HuggingFace | — | — |
Quality
| Field | anthropic__claude-sonnet-5.5 | google__gemini-3.1-pro-preview |
|---|---|---|
| Quality index (0–100) | 93.2 | 79.3 |
Cost
| Field | anthropic__claude-sonnet-5.5 | google__gemini-3.1-pro-preview |
|---|---|---|
| Input $ / 1M tokens | $2.00 | $2.00 |
| Cached input $ / 1M | $0.20 | $0.20 |
| Output $ / 1M tokens | $10.00 | $12.00 |
Context
| Field | anthropic__claude-sonnet-5.5 | google__gemini-3.1-pro-preview |
|---|---|---|
| Max context tokens | 1,000,000 | 1,048,576 |
| Max output tokens | 128,000 | 65,536 |
Modalities
| Field | anthropic__claude-sonnet-5.5 | google__gemini-3.1-pro-preview |
|---|---|---|
| Input | text, image, file | audio, file, image, text, video |
| Output | text | text |