OpenAI's GPT-6.1 Sol served in pro reasoning mode for the hardest problems.
Z.ai's high-speed variant of GLM 5.3 Flash, generating up to 200 tokens per second.
No shared demos for these models yet.
No captured outputs for these models yet.
Both GPT 6.1 Sol Pro and GLM 5.3 FlashX 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.
GLM 5.3 FlashX has a lower blended cost. GPT 6.1 Sol Pro: $2.00 input / $10.00 output. GLM 5.3 FlashX: $0.37 input / $1.25 output.
GPT 6.1 Sol Pro has a larger context window: GPT 6.1 Sol Pro supports 1.1M tokens vs GLM 5.3 FlashX at 1M tokens.
Yes, both GPT 6.1 Sol Pro and GLM 5.3 FlashX support vision/image input.
Key differences: GLM 5.3 FlashX is significantly cheaper. 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 GPT 6.1 Sol Pro and GLM 5.3 FlashX for free on idapt.app to see which performs better for your specific needs.