GPT-5 Codex vs GPT Chat
OpenAI vs OpenAI — benchmarks, pricing, and capabilities side by side.
- •GPT-5 Codex is cheaper ($1.25 vs $5.00 per 1M input)
| GPT-5 Codex | GPT Chat | |
|---|---|---|
| Intelligence index | 87.1 | — |
| Developer | OpenAI | OpenAI |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | 400,000 tokens | 400,000 tokens |
| Input price | $1.25 / 1M | $5.00 / 1M |
| Output price | $10.00 / 1M | $30.00 / 1M |
| Speed | 180 tok/s | — |
| Released | September 23, 2025 | May 5, 2026 |
| Parameters | — | — |
| Input modalities | Text, Image | Text, Image |
| Output modalities | Text | Text |