Compare
2–4 model comparison. Best-in-row is highlighted.
Claude Opus 4.5
Anthropic · anthropic__claude-opus-4.5
GPT-5.5
OpenAI · openai__gpt-5.5
Identity
| Field | anthropic__claude-opus-4.5 | openai__gpt-5.5 |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Slug | anthropic__claude-opus-4.5 | openai__gpt-5.5 |
| Status | live | live |
| Open weights | No | No |
| License | — | — |
| HuggingFace | — | — |
Quality
| Field | anthropic__claude-opus-4.5 | openai__gpt-5.5 |
|---|---|---|
| Quality index (0–100) | 82.3 | 81.8 |
Cost
| Field | anthropic__claude-opus-4.5 | openai__gpt-5.5 |
|---|---|---|
| Input $ / 1M tokens | $5.00 | $5.00 |
| Cached input $ / 1M | $0.50 | $0.50 |
| Output $ / 1M tokens | $25.00 | $30.00 |
Context
| Field | anthropic__claude-opus-4.5 | openai__gpt-5.5 |
|---|---|---|
| Max context tokens | 200,000 | 1,050,000 |
| Max output tokens | 64,000 | 128,000 |
Modalities
| Field | anthropic__claude-opus-4.5 | openai__gpt-5.5 |
|---|---|---|
| Input | file, image, text | file, image, text |
| Output | text | text |