GPT 5.3 Codex
GPT 5.3 Codex is the GPT-5.3 generation of OpenAI's coding agent models, advancing autonomous software engineering with GPT-5.3 generation improvements in reasoning and code comprehension.
ReasoningTool UseFile InputVision (Image)Web SearchImplicit Caching
index.ts
import { streamText } from 'ai'
const result = streamText({ model: 'openai/gpt-5.3-codex', prompt: 'Why is the sky blue?'})More models by OpenAI
| Model |
|---|
| 1M | 1.0s | 58tps | $5.00/M | $30.00/M | Read: $0.5/M Write: — | $10.00/K + input costs | — |   | 04/24/2026 | ||||
| 400K | 1.5s | 240tps | $0.75/M | $4.50/M | Read:$0.07/M Write:— | $10.00/K + input costs | — | | 03/17/2026 | ||||
| 400K | 0.4s | 18tps | $0.20/M | $1.25/M | Read:$0.02/M Write:— | $10.00/K + input costs | — | | 03/17/2026 | ||||
| 1.1M | 1.0s | 65tps | $2.50/M | $15.00/M | Read: $0.25/M Write: — | $10.00/K + input costs | — | | 03/05/2026 | ||||
| 128K | 0.6s | 92tps | $1.25/M | $10.00/M | Read:$0.13/M Write:— | $10.00/K + input costs | — | | 11/12/2025 | ||||
| 131K | 0.2s | 482tps | $0.35/M | $0.75/M | Read:$0.25/M Write:— | — | — |    +5 | 08/05/2025 |