GPT 5.3 Codex vs Gemini 3

Specs	GPT 5.3 Codex No reviews Paid	Top Rated Gemini 3 (6) Free	Add Tool	Add Tool
Overview
Rating	Unrated	4.7 / 5
Use Case	Coding	Content Creation
Tagline	An autonomous coding agent that works for hours on complex projects. You can interact with it in real time while it codes, tests, and deploys your applications. It outperforms all	Google's most intelligent multimodal model: advanced reasoning, deep contextual understanding, autonomous agents, visual coding, and Deep Think mode. It performs particularly well
Pricing
Model	Paid	Free
Details	Starting at $20/month	Free tier; Pro $19.99/month; Ultra $249.99/month.
Tags	Subscription	SubscriptionFree Tier
Features
AI Model	Proprietary	Proprietary
Pros	+Developer-friendly with API access. +Capable of autonomous agentic workflows.	+Developer-friendly with API access. +Native mobile app available for on-the-go use. +Capable of autonomous agentic workflows.
Cons	–No permanent free tier available. –May use submitted data for model training (check privacy policy).	–May use submitted data for model training (check privacy policy).
API
Mobile App
Open Source
Integrations	GithubSlackNotion	NotionGoogle DriveZapier
Security & Privacy
Trains on Data	Yes	Yes
SSO
Certifications	None	None
Team
Best For	Small Team	Solo
	VisitDetails	VisitDetails

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