# GPT-3.5 Turbo

> Two dollars a million tokens, ten times cheaper than the GPT-3.5 models it replaced, and the model the first generation of chat apps was written against. The list of messages with roles that it introduced is still the shape of the industry's API. Its three snapshots leave on three separate dates, the first in September 2024 and the last on 23 October 2026.

2023-03-01 — still running · lived 3 years, 6 months · plot reserved

Also answers to: `gpt-3.5-turbo-0301`, `gpt-3.5-turbo-0613`, `gpt-3.5-turbo-16k-0613`, `gpt-3.5-turbo-1106`, `gpt-3.5-turbo-0125`, `gpt-3.5-turbo-completions`

## The record

- Provider: OpenAI
- Model id: `gpt-3.5-turbo`
- Cause of death: Superseded
- Notice given: 2023-06-13
- Funeral: 2026-10-23
- Cost per Mtok: $2 in · $2 out

## Sources

- https://developers.openai.com/api/docs/deprecations
- https://web.archive.org/web/20240428215355/https://openai.com/blog/introducing-chatgpt-and-whisper-apis

## Elsewhere

- [Stand at this grave](https://models.rip/gpt-3.5-turbo)
- [The OpenAI plot](https://models.rip/openai)
- [The whole cemetery](https://models.rip/)