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DeepSeek-V3 vs Grok 4 Fast
Comprehensive side-by-side LLM comparison
Grok 4 Fast leads with 46.4% higher average benchmark score. Grok 4 Fast offers 1.8M more tokens in context window than DeepSeek-V3. Grok 4 Fast is $0.67 cheaper per million tokens. Grok 4 Fast supports multimodal inputs. Overall, Grok 4 Fast is the stronger choice for coding tasks.
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DeepSeek
DeepSeek-V3 was introduced as a major architectural advancement, developed with 671B mixture-of-experts parameters and trained on 14.8 trillion tokens. Built to be three times faster than V2 while maintaining open-source availability, it demonstrates competitive performance against frontier closed-source models and represents a significant leap in efficient large-scale model design.
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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.
8 months newer
DeepSeek-V3
DeepSeek
2024-12-25
Grok 4 Fast
xAI
2025-08-28
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Pricing Comparison
Cost per million tokens (USD)
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DeepSeek-V3
Input:$0.27
Output:$1.10
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Grok 4 Fast
Input:$0.20
Output:$0.50($0.67 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 3 common benchmarks
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DeepSeek-V3
Average Score:40.5%
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Grok 4 Fast
Average Score:86.9%(+46.4%)
Provider Availability & Performance
Available providers and their performance metrics
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DeepSeek-V3
1 providers
DeepSeek
Throughput: 100 tok/s
Latency: 0.5ms
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Grok 4 Fast
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DeepSeek-V3
Avg Score:40.5%
Providers:1
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Grok 4 Fast
Avg Score:86.9%(+46.4%)
Providers:1