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GPT-5 vs Grok-1.5
Comprehensive side-by-side LLM comparison
GPT-5 leads with 48.2% higher average benchmark score. GPT-5 supports multimodal inputs. GPT-5 is available on 2 providers. Overall, GPT-5 is the stronger choice for coding tasks.
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OpenAI
GPT-5 is a multimodal language model developed by OpenAI. It achieves strong performance with an average score of 70.1% across 35 benchmarks. It excels particularly in SWE-Lancer (IC-Diamond subset) (100.0%), COLLIE (99.0%), Tau2 Telecom (96.7%). It supports a 528K token context window for handling large documents. The model is available through 2 API providers. 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.
1 year newer
Grok-1.5
xAI
2024-03-28
GPT-5
OpenAI
2025-08-07
Performance Metrics
Context window and performance specifications
Average performance across 39 common benchmarks
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GPT-5
Average Score:62.9%(+48.2%)
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Grok-1.5
Average Score:14.7%
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Knowledge Cutoff
Training data recency comparison
GPT-5
2024-09-30
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-5
2 providers
OpenAI
Throughput: 100 tok/s
Latency: 2ms
ZeroEval
Throughput: 100 tok/s
Latency: 2ms
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GPT-5
Avg Score:62.9%(+48.2%)
Providers:2
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Grok-1.5
Avg Score:14.7%
Providers:0