Amazon's most capable multimodal model for complex reasoning tasks.
xAI's Opus-class flagship for frontier coding, agentic tool use, and knowledge work.
No shared agent demos for these models yet.
No captured outputs for these models yet.
This model hasn't been benchmarked yet.
Both Nova Premier and Grok 4.5 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.
Grok 4.5 has a lower blended cost. Nova Premier: $2.50 input / $12.50 output. Grok 4.5: $2.00 input / $6.00 output.
Nova Premier has a larger context window: Nova Premier supports 1M tokens vs Grok 4.5 at 500K tokens.
Yes, both Nova Premier and Grok 4.5 support vision/image input.
Key differences: only Grok 4.5 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 Nova Premier and Grok 4.5 for free on idapt.app to see which performs better for your specific needs.
