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Grok 4 Fast vs Qwen2.5 72B Instruct
Comprehensive side-by-side LLM comparison
Grok 4 Fast leads with 30.6% higher average benchmark score. Grok 4 Fast offers 1.9M more tokens in context window than Qwen2.5 72B Instruct. Both models have similar pricing. Grok 4 Fast supports multimodal inputs. Qwen2.5 72B Instruct is available on 4 providers. Overall, Grok 4 Fast is the stronger choice for coding tasks.
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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.
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Alibaba Cloud / Qwen Team
Qwen 2.5 72B was developed as the flagship text model in the Qwen 2.5 series, designed to provide advanced language capabilities with 72 billion parameters. Built to compete with frontier models in reasoning, coding, and general language tasks, it represents Qwen's most capable instruction-following model in this generation.
11 months newer
Qwen2.5 72B Instruct
Alibaba Cloud / Qwen Team
2024-09-19
Grok 4 Fast
xAI
2025-08-28
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Pricing Comparison
Cost per million tokens (USD)
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Grok 4 Fast
Input:$0.20
Output:$0.50($0.05 cheaper)
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Qwen2.5 72B Instruct
Input:$0.35
Output:$0.40
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
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Grok 4 Fast
Average Score:82.8%(+30.6%)
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Qwen2.5 72B Instruct
Average Score:52.3%
Provider Availability & Performance
Available providers and their performance metrics
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Grok 4 Fast
1 providers
xAI
Throughput: 90 tok/s
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Qwen2.5 72B Instruct
4 providers
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Grok 4 Fast
Avg Score:82.8%(+30.6%)
Providers:1
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Qwen2.5 72B Instruct
Avg Score:52.3%
Providers:4