Model Comparison
GPT-5 CodexOpenAI o4-mini
Let's see who can write code better - GPT-5 Codex or OpenAI o4-mini
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
OpenAI o4-mini
Description
Future iteration of reasoning models
Specifications
Context Window200K
Max Output66K
ReleasedJun 2025
API✓
Pricing (per 1M)
In / Out
$1.1/ $4.4
Key Features
Advanced reasoningFuture capabilitiesEfficient processing
Strengths
- ✓Next-gen reasoning
- ✓Improved efficiency
- ✓Better performance
Weaknesses
- ✗Not yet released
- ✗Purely speculative