GPT 5.3 Codex (Fast)
vercel / openai/gpt-5.3-codex-fast
Input price
$3.5
per 1M tokens
Output price
$28
per 1M tokens
Context
400K
tokens
Capabilities
✓ Reasoning✓ Tool calls✓ Image input— Open weights
| cache read | $0.35 |
| Context | 400,000 tokens |
| max output | 128,000 tokens |
| Released | 2026-02-05 |
| Data updated | 2026-02-05 |
Prices are official/data-source rates (per 1M tokens), not what relays actually charge — relay prices vary with discounts and group multipliers. See methodology.