GPT-5.1 Codex is retired since Jul 23, 2026.
The prices below are the last ones OpenAI charged for it, kept with their history. See who sells GPT-5.1 Codex
Model Details
Context Length
400,000
Max Output
128,000
Released
Nov 2025
Status
Deprecated(on Jul 23, 2026)
Modalities
Text
Last Pricing
Text (2 tiers)
| Context Size | Service Tier | Input Price per 1M tokens |
Output Price per 1M tokens |
Cached Input per 1M tokens |
Effective From |
|---|---|---|---|---|---|
| 400,000 tokens | Priority | $2.5000 | $20.0000 | $0.2500 | — |
| 400,000 tokens | Standard | $1.2500 | $10.0000 | $0.1250 | Nov 13, 2025 |
Pricing Change History
No pricing changes have been recorded yet for this model.