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GPT-4.5 vs Grok-1.5
Comprehensive side-by-side LLM comparison
GPT-4.5 leads with 37.6% higher average benchmark score. 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-1.5 is a language model developed by xAI. It achieves strong performance with an average score of 63.9% across 9 benchmarks. It excels particularly in GSM8k (90.0%), DocVQA (85.6%), MMLU (81.3%). Released in 2024, it represents xAI's latest advancement in AI technology.
11 months newer
Grok-1.5
xAI
2024-03-28
GPT-4.5
OpenAI
2025-02-27
Performance Metrics
Context window and performance specifications
Average performance across 30 common benchmarks
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GPT-4.5
Average Score:56.8%(+37.6%)
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Grok-1.5
Average Score:19.2%
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-1.5
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GPT-4.5
Avg Score:56.8%(+37.6%)
Providers:1
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Grok-1.5
Avg Score:19.2%
Providers:0