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GPT-4.5 vs Grok Code Fast 1
Comprehensive side-by-side LLM comparison
GPT-4.5 leads with 60.5% higher average benchmark score. Grok Code Fast 1 offers 133.9K more tokens in context window than GPT-4.5. Grok Code Fast 1 is $223.30 cheaper per million tokens. GPT-4.5 supports multimodal inputs. Overall, GPT-4.5 is the stronger choice for coding tasks.
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OpenAI
GPT-4.5 is a multimodal language model developed by OpenAI. It achieves strong performance with an average score of 63.1% across 27 benchmarks. It excels particularly in GSM8k (97.0%), MMLU (90.8%), CharXiv-D (90.0%). It supports a 132K token context window for handling large documents. 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 OpenAI's latest advancement in AI technology.
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xAI
Grok Code Fast 1 is a language model developed by xAI. It achieves strong performance with an average score of 70.8% across 1 benchmarks. Notable strengths include SWE-Bench Verified (70.8%). It supports a 266K token context window for handling large documents. The model is available through 1 API provider. Released in 2025, it represents xAI's latest advancement in AI technology.
6 months newer
GPT-4.5
OpenAI
2025-02-27
Grok Code Fast 1
xAI
2025-08-28
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Pricing Comparison
Cost per million tokens (USD)
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GPT-4.5
Input:$75.00
Output:$150.00
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Grok Code Fast 1
Input:$0.20
Output:$1.50($223.30 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 27 common benchmarks
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GPT-4.5
Average Score:63.1%(+60.5%)
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Grok Code Fast 1
Average Score:2.6%
Provider Availability & Performance
Available providers and their performance metrics
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GPT-4.5
1 providers
OpenAI
Throughput: 50 tok/s
Latency: 20ms
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Grok Code Fast 1
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GPT-4.5
Avg Score:63.1%(+60.5%)
Providers:1
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Grok Code Fast 1
Avg Score:2.6%
Providers:1