Meta's largest open-weight model at 405B parameters.
Z.ai's efficient multimodal model for fast coding and long-horizon agent tasks.
No shared demos for these models yet.
No captured outputs for these models yet.
Both Llama 3.1 405B and GLM 5.3 Flash 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 Flash has a larger context window: Llama 3.1 405B supports 131K tokens vs GLM 5.3 Flash at 1M tokens.
GLM 5.3 Flash supports vision/image input, but Llama 3.1 405B does not.
Key differences: only GLM 5.3 Flash supports vision input; only GLM 5.3 Flash 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 Llama 3.1 405B and GLM 5.3 Flash for free on idapt.app to see which performs better for your specific needs.