Detailed comparison of capabilities, features, and performance.
| Feature | Claude 4.5 Opus | GPT-4o |
|---|---|---|
| AI Lab | Anthropic | OpenAI |
| Context Size | 200,000 tokens | 128,000 tokens |
| Max Output Size | 64,000 tokens | 4,096 tokens |
| Frontier Model | Yes | Yes |
| Vision Support | Yes | Yes |
| Description | The latest Opus 4.5 model from Anthropic | The Omni model from OpenAI that reasons across audio vision and text |
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