GPT-5.3 Codex vs DeepSeek V4 Pro

Compare pricing, context windows, and features side by side.

Last verified Aug 2026 ยท Prices per 1M tokens

OpenAI
GPT-5.3 Codex
$0.00
per month
Input cost
Output cost
Cost per request
Requests/month
DeepSeek
DeepSeek V4 Pro
$0.00
per month
Input cost
Output cost
Cost per request
Requests/month

Frequently Asked Questions

How much cheaper is DeepSeek V4 Pro than GPT-5.3 Codex?

GPT-5.3 Codex costs $2.50/$10.00 per 1M tokens. DeepSeek V4 Pro costs $0.66/$1.98 per 1M tokens.

Is GPT-5.3 Codex worth 5x the price over DeepSeek V4 Pro?

GPT-5.3 Codex is specifically optimized for code generation tasks with superior code quality on complex multi-file refactoring. DeepSeek V4 Pro handles most coding tasks well at 83-91% lower cost. For high-volume code generation, DeepSeek is the better value; for critical code where quality matters most, Codex may justify the premium.

Can DeepSeek V4 Pro replace GPT-5.3 Codex for coding?

For most coding tasks (boilerplate, tests, simple features, documentation), DeepSeek V4 Pro delivers excellent results at $0.66/$1.98 vs Codex's $2.50/$10. For complex architecture decisions, multi-file refactoring, and critical production code, GPT-5.3 Codex's specialized training may produce better results.

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