Gemini 2.5 Pro is slightly cheaper per million tokens (blended). Claude Sonnet 5.5 leads quality index by 17.9 points (93.2 vs 75.3). Gemini 2.5 Pro has the larger context window (1,048,576 vs 1,000,000 tokens).
Claude Sonnet 5.5 vs Gemini 2.5 Pro
Live catalog fields. Best-in-row is highlighted.
Claude Sonnet 5.5
Anthropic · anthropic__claude-sonnet-5.5
Gemini 2.5 Pro
Google · google__gemini-2.5-pro
Identity
| Field | anthropic__claude-sonnet-5.5 | google__gemini-2.5-pro |
|---|---|---|
| Provider | Anthropic | |
| Slug | anthropic__claude-sonnet-5.5 | google__gemini-2.5-pro |
| Status | live | live |
| Open weights | No | No |
| License | — | — |
| HuggingFace | — | — |
Quality
| Field | anthropic__claude-sonnet-5.5 | google__gemini-2.5-pro |
|---|---|---|
| Quality index (0–100) | 93.2 | 75.3 |
Cost
| Field | anthropic__claude-sonnet-5.5 | google__gemini-2.5-pro |
|---|---|---|
| Input $ / 1M tokens | $2.00 | $1.25 |
| Cached input $ / 1M | $0.20 | $0.13 |
| Output $ / 1M tokens | $10.00 | $10.00 |
Context
| Field | anthropic__claude-sonnet-5.5 | google__gemini-2.5-pro |
|---|---|---|
| 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-2.5-pro |
|---|---|---|
| Input | text, image, file | text, image, file, audio, video |
| Output | text | text |