GPT-4o mini vs GPT-5 Codex
Detailed comparison of capabilities, features, and performance.
Feature
GPT-4o mini
GPT-5 Codex
Model Image
AI Lab
OpenAI
OpenAI
Context Size
128,000 tokens
400,000 tokens
Max Output Size
16,384 tokens
128,000 tokens
Frontier Model
No
Yes
Vision Support
Yes
Yes
Description
OpenAI's affordable and intelligent small model for fast lightweight tasks
OpenAI's specialist coding model.
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View detailed specifications and capabilities
View model details →Learn more about GPT-5 Codex
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