Model Comparison
GPT-5 CodexGemini 1.5 Flash
Let's see who can write code better - GPT-5 Codex or Gemini 1.5 Flash
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
Gemini 1.5 Flash
Description
Fast and efficient multimodal model optimized for speed (deprecated - no longer available in API)
Specifications
Context Window1.0M
Max Output8K
ReleasedMay 2024
API✓
Pricing (per 1M)
In / Out
$0.075/ $0.3
Key Features
Fast inferenceLarge context windowMultimodalCost-effective
Strengths
- ✓Very fast responses
- ✓Good balance of capability and speed
- ✓Affordable pricing
- ✓Strong for its size
Weaknesses
- ✗Less capable than Pro version
- ✗May struggle with complex reasoning
- ✗Limited availability in some regions
Agent Support
No known agents