+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
Claude Sonnet 4.5 vs Grok-1.5
Comprehensive side-by-side LLM comparison
Claude Sonnet 4.5 leads with 6.3% higher average benchmark score. Claude Sonnet 4.5 supports multimodal inputs. Claude Sonnet 4.5 is available on 2 providers. Overall, Claude Sonnet 4.5 is the stronger choice for coding tasks.
+
+
+
+
Anthropic
Claude Sonnet 4.5 is a multimodal language model developed by Anthropic. It achieves strong performance with an average score of 75.8% across 9 benchmarks. It excels particularly in MMMLU (89.1%), AIME 2025 (87.0%), TAU-bench Retail (86.2%). It supports a 264K 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 Anthropic's latest advancement in AI technology.
+
+
+
+
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
Claude Sonnet 4.5
Anthropic
2025-09-29
Performance Metrics
Context window and performance specifications
Average performance across 17 common benchmarks
+
+
+
+
Claude Sonnet 4.5
Average Score:40.1%(+6.3%)
+
+
+
+
Grok-1.5
Average Score:33.8%
+
+
+
+
Knowledge Cutoff
Training data recency comparison
Claude Sonnet 4.5
2025-01-31
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
+
+
+
+
Claude Sonnet 4.5
2 providers
Anthropic
Throughput: 42 tok/s
Latency: 0.4ms
ZeroEval
Throughput: 42 tok/s
Latency: 0.4ms
+
+
+
+
+
+
+
+
Claude Sonnet 4.5
Avg Score:40.1%(+6.3%)
Providers:2
+
+
+
+
Grok-1.5
Avg Score:33.8%
Providers:0