Availability

Publicly available

Provider

OpenAI

Country

USA

Family

GPT

Status

Legacy

Weights

Closed

Release date

2025-11-13T00:00:00.000Z

Input per million tokens

1.25 USD

Output per million tokens

10 USD

Price effective from

2026-10-22T00:00:00.000Z

Knowledge cutoff

2024-09-30T00:00:00.000Z

Deprecation date

2026-10-01T00:00:00.000Z

Retirement date

2027-04-01T00:00:00.000Z

Aliases

gpt-5.1, gpt-5.1-2025-11-13