Model Comparison
GPT-4.1 NanoGPT-5.3 Codex
Let's see who can write code better - GPT-4.1 Nano or GPT-5.3 Codex
Model Information
GPT-4.1 Nano
Description
Ultra-lightweight version of GPT-4.1
Specifications
Context Window64K
Max Output4K
ReleasedJan 2025
API✓
Pricing (per 1M)
In / Out
$0.1/ $0.4
Key Features
Minimal resource usageEdge deployment readyBasic GPT-4.1 capabilities
Strengths
- ✓Very low cost
- ✓Fast responses
- ✓Good for simple tasks
Weaknesses
- ✗Not yet released
- ✗Limited capabilities
Agent Support
No known agents
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