GPT-5.3 Codex Extra High
| Released | 2026-02-05 |
|---|---|
| Price per 1M | $1.75 in · $14.00 out |
| Overall score | 58.4 (early, few results) |
| Context window | 400,000 tokens |
| Provider | OpenAI |
| Weights | Proprietary |
| Configuration | Extra High |
Scores
| Dimension | Score | Rank | Benchmarks |
|---|---|---|---|
| Overall: Balanced | 58.4 | 5 | |
| Overall: Coding | 57.2 | 5 | |
| Overall: Reasoning | 61.6 | 1 | |
| Overall: Agentic work | 58.8 | 4 | |
| Overall: Frontend | 55.4 | 4 | |
| Coding | 57.2 | 3 | |
| Reasoning | 61.6 | 1 | |
| Frontend | 54.5 | 1 | |
| Value vs price | +3.6 |
Evidence
Coding 57.2 ±2.9
| Benchmark | Result | Source | Date |
|---|---|---|---|
| SWE-bench Verified (Vals run) | 78.0% | Vals AI | 2026-09-01 |
| IOI | 53.8% | Vals AI | 2026-10-29 |
| LiveCodeBench (Vals run) | 87.3% | Vals AI | 2026-09-01 |
Reasoning 61.6 ±5.3
Frontend 54.5 ±0.8
| Benchmark | Result | Source | Date |
|---|---|---|---|
| Vibe Code Bench v1.1 | 61.8% | Vals AI | 2026-11-09 |
Names matched to this model
gpt-5-3-codex-xhigh