OpenAI's GPT-6 Sol served in pro reasoning mode for the hardest problems.
Anthropic's Sonnet-class model for well-scoped everyday work, a direct upgrade over Claude Sonnet 5.
No shared demos for these models yet.
No captured outputs for these models yet.
Both GPT 6 Sol Pro and Claude Sonnet 5.5 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.
GPT 6 Sol Pro has a lower blended cost. GPT 6 Sol Pro: $2.00 input / $10.00 output. Claude Sonnet 5.5: $2.00 input / $10.00 output.
GPT 6 Sol Pro has a larger context window: GPT 6 Sol Pro supports 1.1M tokens vs Claude Sonnet 5.5 at 1M tokens.
Yes, both GPT 6 Sol Pro and Claude Sonnet 5.5 support vision/image input.
GPT 6 Sol Pro and Claude Sonnet 5.5 have similar overall capabilities. The main differences lie in pricing, context window size, and provider-specific strengths. Use this comparison page to review all metrics side by side.
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 GPT 6 Sol Pro and Claude Sonnet 5.5 for free on idapt.app to see which performs better for your specific needs.