GPT-5.1-Codex
GPT-5.1-Codex is a GPT-5.1 generation coding agent model designed for autonomous software engineering, combining improved reasoning over the GPT-5 codex generation with the ability to read, write, execute, and verify code in sandboxed environments.
File InputTool UseReasoningVision (Image)Web SearchImplicit Caching
index.ts
import { streamText } from 'ai'
const result = streamText({ model: 'openai/gpt-5.1-codex', prompt: 'Why is the sky blue?'})More models by OpenAI
| Model |
|---|
| 1.1M | 2.0s | 155tps | $1/M | $6/M | Read: $0.1/M Write: $1.25/M | $10/K + input costs | +4 |    | 07/09/2026 | |||
| 1.1M | 2.2s | 147tps | $5/M | $30/M | Read: $0.5/M Write: $6.25/M | $10/K + input costs | +4 | | 07/09/2026 | |||
| 1.1M | 1.7s | 92tps | $2.50/M | $15/M | Read: $0.25/M Write: $3.13/M | $10/K + input costs | +4 | | 07/09/2026 | |||
| 1.1M | 1.9s | 54tps | $2.50/M | $15/M | Read: $0.25/M Write: — | $10/K + input costs | +4 | | 03/05/2026 | |||
| 400K | 6.1s | 122tps | $0.05/M | $0.40/M | Read:$0.01/M Write:— | $14/K + input costs | +3 | | 08/07/2025 | |||
| 400K | 4.9s | 107tps | $0.25/M | $2/M | Read:$0.03/M Write:— | $14/K + input costs | +3 | | 08/07/2025 |