GPT 4.1 Nano vs Grok 4.5
Fastest and cheapest model in the GPT-4.1 series for low-latency applications.
xAI's Opus-class flagship for frontier coding, agentic tool use, and knowledge work.
No captured outputs for these models yet.
Frequently Asked Questions: GPT 4.1 Nano vs Grok 4.5▼
Which is better, GPT 4.1 Nano or Grok 4.5?
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Based on the Capability Index, Grok 4.5 scores higher (88.5 vs 64.4). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.
Which is cheaper, GPT 4.1 Nano or Grok 4.5?
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GPT 4.1 Nano has a lower blended cost. GPT 4.1 Nano: $0.10 input / $0.40 output. Grok 4.5: $2.00 input / $6.00 output.
Which has a larger context window, GPT 4.1 Nano or Grok 4.5?
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GPT 4.1 Nano has a larger context window: GPT 4.1 Nano supports 1M tokens vs Grok 4.5 at 500K tokens.
Do both GPT 4.1 Nano and Grok 4.5 support vision?
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Yes, both GPT 4.1 Nano and Grok 4.5 support vision/image input.
What are the key differences between GPT 4.1 Nano and Grok 4.5?
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Key differences: Grok 4.5 has a notably higher capability index (24.1 point gap); GPT 4.1 Nano is significantly cheaper; only Grok 4.5 offers extended reasoning mode. Compare full specs on this page.
Which model should I choose for my use case?
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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 4.1 Nano and Grok 4.5 for free on idapt.app to see which performs better for your specific needs.