Model Comparison
Claude Sonnet 4.5OpenAI o3
Let's see who can write code better - Claude Sonnet 4.5 or OpenAI o3
Model Information
Claude Sonnet 4.5
Description
Balanced Claude 4.5 model with excellent performance
Specifications
Context Window200K
Max Output8K
ReleasedSep 2025
API✓
Pricing (per 1M)
In / Out
$3/ $15
Key Features
Balanced performanceAdvanced reasoningCode generationMulti-modal capabilities
Strengths
- ✓Good price-performance ratio
- ✓Versatile capabilities
- ✓Fast inference
- ✓Strong at most tasks
Weaknesses
- ✗Not as powerful as Opus
- ✗Higher cost than Haiku
- ✗May struggle with very complex tasks
Agent Support
No known agents
OpenAI o3
Description
Next generation reasoning model
Specifications
Context Window200K
Max Output100K
ReleasedMar 2025
API✓
Pricing (per 1M)
In / Out
$2/ $8
Key Features
Enhanced reasoningImproved capabilitiesBetter performance
Strengths
- ✓State-of-the-art reasoning
- ✓Improved over o1
- ✓Better efficiency
Weaknesses
- ✗Not yet released
- ✗Specifications unknown