OpenAI: GPT-5.3-Codex API Pricing
by openai · 400K context window ·
$1.750
Input /1M tokens
$14.000
Output /1M tokens
400K
Context window
Monthly Cost Examples
Assuming 50% input / 50% output token split
| Usage | Monthly cost |
|---|---|
| 100K tokens/month | $0.79 |
| 1M tokens/month | $7.88 |
| 10M tokens/month | $78.75 |
| 100M tokens/month | $787.50 |
Compare with other models
OpenAI: GPT-5.3-Codex vs OpenAI: GPT-4o →OpenAI: GPT-5.3-Codex vs OpenAI: GPT-4o-mini →OpenAI: GPT-5.3-Codex vs OpenAI: o1 →Automate your model selection
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