+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
Claude Opus 4.1 vs Claude Sonnet 4.5
Comprehensive side-by-side LLM comparison
Claude Sonnet 4.5 leads with 10.0% higher average benchmark score. Claude Sonnet 4.5 offers 32.0K more tokens in context window than Claude Opus 4.1. Claude Sonnet 4.5 is $72.00 cheaper per million tokens. Claude Opus 4.1 is available on 4 providers. Overall, Claude Sonnet 4.5 is the stronger choice for coding tasks.
+
+
+
+
Anthropic
Claude Opus 4.1 is a multimodal language model developed by Anthropic. It achieves strong performance with an average score of 72.7% across 8 benchmarks. It excels particularly in MMMLU (89.5%), TAU-bench Retail (82.4%), GPQA (80.9%). It supports a 232K token context window for handling large documents. The model is available through 4 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.
+
+
+
+
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.
1 month newer
Claude Opus 4.1
Anthropic
2025-08-05
Claude Sonnet 4.5
Anthropic
2025-09-29
Pricing Comparison
Cost per million tokens (USD)
+
+
+
+
Claude Opus 4.1
Input:$15.00
Output:$75.00
+
+
+
+
Claude Sonnet 4.5
Input:$3.00
Output:$15.00($72.00 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 10 common benchmarks
+
+
+
+
Claude Opus 4.1
Average Score:58.2%
+
+
+
+
Claude Sonnet 4.5
Average Score:68.2%(+10.0%)
+
+
+
+
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 Opus 4.1
4 providers
Anthropic
Throughput: 100 tok/s
Latency: 0.5ms
Bedrock
Throughput: 120 tok/s
Latency: 0.5ms
Throughput: 42 tok/s
Latency: 0.4ms
ZeroEval
Throughput: 42 tok/s
Latency: 0.4ms
+
+
+
+
Claude Opus 4.1
Avg Score:58.2%
Providers:4
+
+
+
+
Claude Sonnet 4.5
Avg Score:68.2%(+10.0%)
Providers:2