Model Comparison
GPT-5.3 CodexCursor Small
Let's see who can write code better - GPT-5.3 Codex or Cursor Small
Model Information
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
Cursor Small
Description
Cursor's proprietary small model optimized for code completion, only available in Cursor IDE
Specifications
Context Window60K
Max Output4K
ReleasedJun 2024
API✗
Key Features
Fast code completionIDE-optimizedLow latency
Strengths
- ✓Very fast responses
- ✓Optimized for IDE use
- ✓Good for autocomplete
Weaknesses
- ✗Limited to Cursor IDE
- ✗Smaller model
- ✗Less capable than larger models