xAI's Opus-class flagship for frontier coding, agentic tool use, and knowledge work.
Flagship reasoning model for complex multi-step tasks.
No shared agent demos for these models yet.
No captured outputs for these models yet.
Based on the Capability Index, Grok 4.5 scores higher (88.5 vs 76.5). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.
Qwen3 Max Thinking has a lower blended cost. Grok 4.5: $2.00 input / $6.00 output. Qwen3 Max Thinking: $0.78 input / $3.90 output.
Grok 4.5 has a larger context window: Grok 4.5 supports 500K tokens vs Qwen3 Max Thinking at 262K tokens.
Grok 4.5 supports vision/image input, but Qwen3 Max Thinking does not.
Key differences: Grok 4.5 has a notably higher capability index (12.0 point gap); Qwen3 Max Thinking is significantly cheaper; only Grok 4.5 supports vision input. 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 Grok 4.5 and Qwen3 Max Thinking for free on idapt.app to see which performs better for your specific needs.