100 Codex credits
100 Codex credits are worth $4.00 (1 credit = $0.04). At OpenAI's stated 5 to 40 credits per GPT-5.6 message, that is roughly 2 to 20 messages. Verified 2026-07-21.
- Dollar value
- $4.00
- GPT-5.6 messages, roughly
- 2 - 20
What it buys, per model
Token equivalents if the whole balance went to one side of the request only (all input, or all output).
| Model | Input tokens | Output tokens |
|---|---|---|
| GPT-5.6 Sol | 800.0K | 133.3K |
| GPT-5.6 Terra | 1.6M | 266.7K |
| GPT-5.6 Luna | 4.0M | 666.7K |
| GPT-5.4 mini | 5.3M | 885.0K |