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GPT-4.1 nano vs Grok 4 Fast
Comprehensive side-by-side LLM comparison
Grok 4 Fast leads with 35.4% higher average benchmark score. Grok 4 Fast offers 949.7K more tokens in context window than GPT-4.1 nano. Both models have similar pricing. Overall, Grok 4 Fast is the stronger choice for coding tasks.
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OpenAI
GPT-4.1 Nano was developed as the smallest and most efficient variant in the GPT-4.1 family, designed for applications requiring minimal latency and resource usage. Built to enable AI capabilities on edge devices and resource-constrained environments, it distills GPT-4.1 capabilities into an ultra-compact form factor.
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xAI
Grok 4 Fast is a multimodal language model developed by xAI. It achieves strong performance with an average score of 73.0% across 7 benchmarks. It excels particularly in SimpleQA (95.0%), HMMT 2025 (93.3%), AIME 2025 (92.0%). With a 2.0M token context window, it can handle extensive documents and complex multi-turn conversations. The model is available through 1 API provider. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2025, it represents xAI's latest advancement in AI technology.
4 months newer
GPT-4.1 nano
OpenAI
2025-04-14
Grok 4 Fast
xAI
2025-08-28
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Pricing Comparison
Cost per million tokens (USD)
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GPT-4.1 nano
Input:$0.10
Output:$0.40($0.20 cheaper)
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Grok 4 Fast
Input:$0.20
Output:$0.50
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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GPT-4.1 nano
Average Score:50.3%
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Grok 4 Fast
Average Score:85.7%(+35.4%)
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Knowledge Cutoff
Training data recency comparison
GPT-4.1 nano
2024-05-31
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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GPT-4.1 nano
1 providers
OpenAI
Throughput: 200 tok/s
Latency: 2ms
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Grok 4 Fast
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GPT-4.1 nano
Avg Score:50.3%
Providers:1
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Grok 4 Fast
Avg Score:85.7%(+35.4%)
Providers:1