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