Model Comparison
GPT-5.3 CodexGrok 3 Mini
Let's see who can write code better - GPT-5.3 Codex or Grok 3 Mini
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
Grok 3 Mini
Description
Efficient and cost-effective version of Grok 3
Specifications
Context Window128K
Max Output8K
ReleasedNov 2024
API✓
Pricing (per 1M)
In / Out
$0.3/ $0.5
Key Features
Cost-effectiveFast inferenceGood performance
Strengths
- ✓Very affordable
- ✓Fast responses
- ✓Good value for money
Weaknesses
- ✗Reduced capabilities vs full Grok 3
- ✗Smaller context window