Model Comparison
GPT-5 CodexGrok 4
Let's see who can write code better - GPT-5 Codex or Grok 4
Model Information
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
Grok 4
Description
Advanced flagship model from xAI with superior reasoning
Specifications
Context Window256K
Max Output16K
ReleasedJul 2024
API✓
Pricing (per 1M)
In / Out
$3/ $15
Key Features
Advanced reasoningLarge context windowSuperior performance
Strengths
- ✓Excellent reasoning abilities
- ✓Very large context
- ✓High-quality outputs
Weaknesses
- ✗Higher cost
- ✗Slower inference
Agent Support
No known agents