GPT 5.3 Codex API price
openai/gpt-5.3-codex
The cheapest GPT 5.3 Codex API is $1.75/M input at Official - OpenAI - all 4 providers compared below, per 1M tokens.
MidOpenAI400K context4 sellers
Input
$1.75
per 1M tokens · Official - OpenAI
Output
$14.00
per 1M tokens · Official - OpenAI
Where to buy it
Cheapest GPT 5.3 Codex API providers compared - 4 sellers, from $1.75/M.
| Provider | Input $/M | Output $/M | Cached in |
|---|---|---|---|
| Official - OpenAI | 1.75cheapest | 14.00 | 0.175 |
| Priority | 3.50 | 28.00 | 0.350 |
| OpenRouter (aggregator) | 1.75 | 14.00 | 0.175 |
| OrcaRouter (aggregator) | 1.75 | 14.00 | - |
| TokenRouter (aggregator) | 1.75 | 14.00 | 0.175 |
Against its tier
- This model$15.75
- Cheapest · Nemotron 3 Super 120B A12B$0.485
- Tier median · Grok 4.3 Latest$3.75
- Dearest · GPT 5.5 Cyber$87.50
#27 of 33 mid · cheaper than 19%
Details
- Context window
- 400K400,000 tokens
- Developer
- OpenAI
- Intelligence
- 45.5xhigh
- Sellers
- 4
- Cached input
- $0.175where the source publishes one
- Cheapest at
- Official - OpenAI
- Combined
- $15.75in + out per 1M
- Last checked
- 2026-08-28