Anthropic's Sonnet-class model for well-scoped everyday work, a direct upgrade over Claude Sonnet 5.
OpenAI's original omni model supporting text and image inputs.
No shared demos for these models yet.
No captured outputs for these models yet.
Both Claude Sonnet 5.5 and GPT 4o are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.
Claude Sonnet 5.5 has a lower blended cost. Claude Sonnet 5.5: $2.00 input / $10.00 output. GPT 4o: $2.50 input / $10.00 output.
Claude Sonnet 5.5 has a larger context window: Claude Sonnet 5.5 supports 1M tokens vs GPT 4o at 128K tokens.
Yes, both Claude Sonnet 5.5 and GPT 4o support vision/image input.
Key differences: only Claude Sonnet 5.5 offers extended reasoning mode. Compare full specs on this page.
If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Claude Sonnet 5.5 and GPT 4o for free on idapt.app to see which performs better for your specific needs.