GPT-5-Codex
impossibl / openai/gpt-5-codex
Input price
$1.25
per 1M tokens
Output price
$10
per 1M tokens
Context
400K
tokens
Capabilities
✓ Reasoning✓ Tool calls✓ Image input— Open weights
| cache read | $0.125 |
| Context | 400,000 tokens |
| max output | 128,000 tokens |
| Released | 2025-09-15 |
| Data updated | 2025-09-15 |
Prices are official/data-source rates (per 1M tokens), not what relays actually charge — relay prices vary with discounts and group multipliers. See methodology.