Model Comparison
Claude Opus 4GPT-5 Codex
Let's see who can write code better - Claude Opus 4 or GPT-5 Codex
Model Information
Claude Opus 4
Description
Next-generation flagship model with enhanced capabilities
Specifications
Context Window200K
Max Output8K
ReleasedJan 2025
API✓
Pricing (per 1M)
In / Out
$15/ $75
Key Features
Next-gen capabilitiesEnhanced reasoningAdvanced code generationMulti-modal support
Strengths
- ✓State-of-the-art performance
- ✓Superior capabilities
- ✓Advanced problem solving
- ✓Excellent context handling
Weaknesses
- ✗Premium pricing
- ✗Slower inference
- ✗Resource intensive
Agent Support
GPT-5 Codex
Description
Flagship model from OpenAI optimised for coding tasks
Specifications
Context Window272K
Max Output33K
ReleasedSep 2025
API✓
Pricing (per 1M)
In / Out
$1.25/ $10
Key Features
CodingAdvanced reasoningMulti-modal native
Strengths
- ✓State-of-the-art performance
- ✓Optimised for coding
- ✓Large context window
Weaknesses
- ✗Likely very expensive
- ✗Unknown specifications
Agent Support
No known agents