500 Codex credits
500 Codex credits are worth $20.00 (1 credit = $0.04). At OpenAI's stated 5 to 40 credits per GPT-5.6 message, that is roughly 12 to 100 messages. Verified 2026-07-21.
- Dollar value
- $20.00
- GPT-5.6 messages, roughly
- 12 - 100
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 | 4.0M | 666.7K |
| GPT-5.6 Terra | 8.0M | 1.3M |
| GPT-5.6 Luna | 20.0M | 3.3M |
| GPT-5.4 mini | 26.7M | 4.4M |