Model Comparison
Claude Haiku 3.5GPT-5 Codex
Let's see who can write code better - Claude Haiku 3.5 or GPT-5 Codex
Model Information
Claude Haiku 3.5
Description
Fast and efficient Claude model with improved capabilities
Specifications
Context Window200K
Max Output8K
ReleasedNov 2024
API✓
Pricing (per 1M)
In / Out
$0.8/ $4
Key Features
Fast inferenceCost-effectiveGood for simple tasksMulti-language support
Strengths
- ✓Very fast responses
- ✓Low cost per token
- ✓Good for high-volume tasks
- ✓Efficient resource usage
Weaknesses
- ✗Less capable on complex tasks
- ✗Limited reasoning depth
- ✗Not suitable for advanced coding
Agent Support
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