+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
Claude Sonnet 4.5 vs GPT-4o mini
Comprehensive side-by-side LLM comparison
Claude Sonnet 4.5 leads with 55.8% higher average benchmark score. Claude Sonnet 4.5 offers 119.6K more tokens in context window than GPT-4o mini. GPT-4o mini is $17.25 cheaper per million tokens. Overall, Claude Sonnet 4.5 is the stronger choice for coding tasks.
+
+
+
+
Anthropic
Claude Sonnet 4.5 was developed to bridge human thinking and machine assistance, allowing people to work with language and tools in a more conversational and natural way. Built with a focus on turning ideas into results, it represents an evolution in making AI feel less mechanical while maintaining strong capabilities across reasoning, coding, and collaborative tasks.
+
+
+
+
OpenAI
GPT-4o Mini was created as a smaller, more efficient variant of GPT-4o, designed to bring multimodal capabilities to applications requiring faster response times and lower costs. Built to democratize access to advanced vision and text understanding, it enables developers to build sophisticated applications with reduced resource requirements.
1 year newer
GPT-4o mini
OpenAI
2024-07-18
Claude Sonnet 4.5
Anthropic
2025-09-29
+
+
+
+
+
+
+
+
+
+
+
+
Pricing Comparison
Cost per million tokens (USD)
+
+
+
+
Claude Sonnet 4.5
Input:$3.00
Output:$15.00
+
+
+
+
GPT-4o mini
Input:$0.15
Output:$0.60($17.25 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
+
+
+
+
Claude Sonnet 4.5
Average Score:80.3%(+55.8%)
+
+
+
+
GPT-4o mini
Average Score:24.4%
Performance comparison across key benchmark categories
+
+
+
+
Claude Sonnet 4.5
Coding77.2%(+68.5%)
+
+
+
+
GPT-4o mini
Coding8.7%
+
+
+
+
Knowledge Cutoff
Training data recency comparison
GPT-4o mini
2023-10-01
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:80.3%(+55.8%)
Providers:2
+
+
+
+
GPT-4o mini
Avg Score:24.4%
Providers:1