GPT-5.3 Codex
Official information
- Release date
- Feb 5, 2026
- Official model ID
- gpt-5.3-codex
- Vendor source
- GPT-5.3 Codex
- Identity verified
- Aug 13, 2026
API pricing
- Verification
- Retained last valid price
- Verified at
- Value benchmark tier
- Fixed USD rate
| Tier / region | Input / output · per MTok | Context pricing tier | Billing | Validity | Source |
|---|---|---|---|---|---|
| Fixed USD rate | $1.75 / $14 | — | PAYG | — | Official rates |
Rankings by category
Overall
#9Medium 0.5777.2
| Source | Percentile | Raw score | Config folding |
|---|---|---|---|
| Epoch AI | 77.2 | 156.6 | Single config |
Coding
#48Medium 0.547.6
| Source | Percentile | Raw score | Config folding |
|---|---|---|---|
| LMArena | 7.6 | 1369.2 | Single config |
Value
#15Medium 0.5747.2
Aliases & configurations
- gpt-5-3-codex
- gpt-5-3-codex-codex-harness· codex harness