Agent may make mistakes and shouldn't be used in production
GPT‑5.1-Codex-Max is purpose-built for agentic coding.
import { streamText } from 'ai'
const result = streamText({ model: 'openai/gpt-5.1-codex-max', prompt: 'Why is the sky blue?'})Try out GPT 5.1 Codex Max by OpenAI. Usage is billed to your team at API rates. Free users get $5 of credits every 30 days, and you are considered a free user if you haven't made a payment.
| Model |
|---|
| 400K | 1.3s | 210tps | $0.75/M | $4.50/M | Read:$0.07/M Write:— | $10.00/K + input costs |   | 03/17/2026 | ||||
| 400K | 0.5s | 21tps | $0.20/M | $1.25/M | Read:$0.02/M Write:— | $10.00/K + input costs | | 03/17/2026 | ||||
| 1.1M | 0.7s | 67tps | $2.50/M | $15.00/M | Read: $0.25/M Write: — | $10.00/K + input costs | | 03/05/2026 | ||||
| 1.1M | $30.00/M | $180.00/M | $10/K + input costs | | 03/05/2026 | |||||||
| 128K | 0.9s | $1.75/M | $14.00/M | Read:$0.17/M Write:— | $10.00/K + input costs | | 03/03/2026 | |||||
| 400K | 1.2s | 56tps | $1.75/M | $14.00/M | Read:$0.17/M Write:— | $10/K + input costs | | 02/24/2026 | ||||
| 400K | 0.8s | 116tps | $1.75/M | $14.00/M | Read:$0.17/M Write:— | $10/K + input costs | | 12/18/2025 | ||||
$5.00/M+1 more | $32.00/M | Read:$1.25/M Write:— | — | | 12/16/2025 | |||||||
| 400K | 0.8s | 71tps | $1.75/M | $14.00/M | Read:$0.17/M Write:— | — | | 12/11/2025 | ||||
| 128K | 0.9s | 96tps | $1.75/M | $14.00/M | Read:$0.17/M Write:— | $10.00/K + input costs | | 12/11/2025 | ||||
| 400K | 12.1s | $21.00/M | $168.00/M | $10.00/K + input costs | | 12/11/2025 | ||||||
| 400K | 0.5s | 26tps | $1.25/M | $10.00/M | Read:$0.13/M Write:— | $10.00/K + input costs | | 11/12/2025 | ||||
| 400K | 1.4s | 1038tps | $0.25/M | $2.00/M | Read:$0.03/M Write:— | $10.00/K + input costs | | 11/12/2025 | ||||
| 128K | 1.0s | 76tps | $1.25/M | $10.00/M | Read:$0.13/M Write:— | $10.00/K + input costs | | 11/12/2025 | ||||
| 400K | 0.8s | 162tps | $1.25/M | $10.00/M | Read:$0.13/M Write:— | $10.00/K + input costs | +1 | | 11/12/2025 | |||
$2.00/M+1 more | $8.00/M | Read:$0.2/M Write:— | — | | 10/06/2025 | |||||||
| 400K | 0.7s | 157tps | $1.25/M | $10.00/M | Read:$0.13/M Write:— | — | | 09/15/2025 | ||||
| 128K | 0.5s | 110tps | $1.25/M | $10.00/M | Read:$0.13/M Write:— | $10.00/K + input costs | | 08/07/2025 | ||||
| 400K | 5.3s | 200tps | $0.25/M | $2.00/M | Read:$0.03/M Write:— | — | | 08/07/2025 | ||||
| 400K | 6.7s | 157tps | $0.05/M | $0.40/M | Read:$0.01/M Write:— | — | | 08/07/2025 | ||||
| 131K | 0.1s | 479tps | $0.35/M | $0.75/M | Read:$0.25/M Write:— | — |    +4 | 08/05/2025 | ||||
| 131K | 0.1s | 234tps | $0.07/M | $0.30/M | Read:$0.04/M Write:— | — |   +4 | 08/05/2025 | ||||
| 400K | 4.9s | 538tps | $1.25/M | $10.00/M | Read:$0.13/M Write:— | — | | 08/01/2025 | ||||
| 1M | 0.7s | 99tps | $0.40/M | $1.60/M | Read:$0.1/M Write:— | — | | 05/14/2025 | ||||
| 200K | 1.0s | 190tps | $2.00/M | $8.00/M | Read:$0.5/M Write:— | $10/K + input costs | | 04/16/2025 | ||||
| 200K | 27.1s | $20.00/M | $80.00/M | $10/K + input costs | | 04/16/2025 | ||||||
| 200K | 2.2s | 337tps | $1.10/M | $4.40/M | Read:$0.28/M Write:— | — | | 04/16/2025 | ||||
| 1M | 0.8s | 88tps | $2.00/M | $8.00/M | Read:$0.5/M Write:— | — | | 04/14/2025 | ||||
| 1M | 0.4s | $0.10/M | $0.40/M | Read:$0.03/M Write:— | — | | 04/14/2025 | |||||
$5.00/M+1 more | $40.00/M | Read:$1.25/M Write:— | — | | 03/25/2025 | |||||||
| 128K | 1.6s | $0.15/M | $0.60/M | $10.00/K + input costs | | 03/12/2025 | ||||||
| 200K | 1.7s | $1.10/M | $4.40/M | Read:$0.55/M Write:— | — | | 12/20/2024 | |||||
| 200K | 1.6s | 8tps | $15.00/M | $60.00/M | Read:$7.5/M Write:— | — | | 12/05/2024 | ||||
| 131K | 0.2s | $0.07/M | $0.30/M | Read:$0.04/M Write:— | — |  | 12/01/2024 | |||||
| 128K | 0.6s | 112tps | $0.15/M | $0.60/M | Read:$0.07/M Write:— | — | | 07/18/2024 | ||||
| 200K | $10.00/M | $40.00/M | Read:$2.5/M Write:— | $10.00/K + input costs | | 06/26/2024 | ||||||
| 128K | 0.6s | 117tps | $2.50/M | $10.00/M | Read:$1.25/M Write:— | — | | 05/13/2024 | ||||
| $0.13/M | — | | 01/25/2024 | |||||||||
| $0.02/M | — | | 01/25/2024 | |||||||||
| 128K | 2.5s | 16tps | $10.00/M | $30.00/M | — | | 11/06/2023 | |||||
| 8K | $1.50/M | $2.00/M | — | | 09/28/2023 | |||||||
| 16K | 0.6s | $0.50/M | $1.50/M | — | | 05/28/2023 | ||||||
| $0.10/M | — | | 12/15/2022 | |||||||||
| 400K | 135.0s | $15.00/M | $120.00/M | $10.00/K + input costs | +1 | |