+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
Claude Sonnet 4.5 vs o4-mini
Comprehensive side-by-side LLM comparison
Claude Sonnet 4.5 leads with 8.1% higher average benchmark score. o4-mini offers 36.0K more tokens in context window than Claude Sonnet 4.5. o4-mini is $12.50 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
o4-mini was created as part of the next generation of OpenAI's reasoning models, designed to continue advancing the balance between analytical capability and operational efficiency. Built to bring cutting-edge reasoning techniques to applications requiring quick turnaround, it represents the evolution of compact reasoning-focused models.
5 months newer
o4-mini
OpenAI
2025-04-16
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
+
+
+
+
o4-mini
Input:$1.10
Output:$4.40($12.50 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 5 common benchmarks
+
+
+
+
Claude Sonnet 4.5
Average Score:80.8%(+8.1%)
+
+
+
+
o4-mini
Average Score:72.6%
Performance comparison across key benchmark categories
+
+
+
+
Claude Sonnet 4.5
Coding77.2%(+9.1%)
+
+
+
+
o4-mini
Coding68.1%
+
+
+
+
Knowledge Cutoff
Training data recency comparison
o4-mini
2024-05-31
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:80.8%(+8.1%)
Providers:2
+
+
+
+
o4-mini
Avg Score:72.6%
Providers:1