Model Comparison
GPT-4.1GPT-5.3 Codex
Let's see who can write code better - GPT-4.1 or GPT-5.3 Codex
Model Information
GPT-4.1
Description
Enhanced GPT-4 with improvements in reasoning and context handling
Specifications
Context Window200K
Max Output16K
ReleasedJan 2025
API✓
Pricing (per 1M)
In / Out
$2/ $8
Key Features
Extended context windowImproved reasoningBetter code generation
Strengths
- ✓Large context window
- ✓Enhanced capabilities
- ✓Better performance
Weaknesses
- ✗Not yet released
- ✗Specifications uncertain
Agent Support
GPT-5.3 Codex
Description
Next-generation coding-optimized model from OpenAI with enhanced autonomous development capabilities
Specifications
Context Window272K
Max Output33K
ReleasedFeb 2026
API✓
Pricing (per 1M)
In / Out
$1.5/ $12
Key Features
Advanced autonomous codingEnhanced code reviewMulti-step reasoningFull-stack development
Strengths
- ✓State-of-the-art coding benchmarks
- ✓Superior autonomous task completion
- ✓Excellent code review capabilities
- ✓Large context window
Weaknesses
- ✗Premium pricing
- ✗Optimized for coding over general tasks
Agent Support
No known agents