GPT-4 Turbo vs GPT-5.3-Codex
OpenAI vs OpenAI — benchmarks, pricing, and capabilities side by side.
- •GPT-5.3-Codex has the higher intelligence index (91.5 vs 59.8)
- •GPT-5.3-Codex is cheaper ($1.75 vs $10.00 per 1M input)
- •GPT-4 Turbo is faster
- •GPT-5.3-Codex has a larger context window (400K)
| GPT-4 Turbo | GPT-5.3-Codex | |
|---|---|---|
| Intelligence index | 59.8 | 91.5 |
| Developer | OpenAI | OpenAI |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | 128,000 tokens | 400,000 tokens |
| Input price | $10.00 / 1M | $1.75 / 1M |
| Output price | $30.00 / 1M | $14.00 / 1M |
| Speed | 100 tok/s | 73 tok/s |
| Released | November 6, 2023 | February 24, 2026 |
| Parameters | — | — |
| Input modalities | Text, Image | Text, Image |
| Output modalities | Text | Text |
Shared benchmarks
GPT-4 Turbo
GPT-5.3-Codex
GPQA Diamond
48
91.5
Humanity’s Last Exam
3.3
39.9