# GPT-3.5 Turbo — price & specs

Source: https://modelbank.ai/models/gpt-3.5-turbo · updated 2026-11-12 · ModelBank

| Field | Value |
|---|---|
| Vendor | OpenAI |
| Input price | $0.5 / 1M tokens |
| Output price | $1.5 / 1M tokens |
| Cached input | n/a / 1M tokens |
| Context window | 16,385 tokens |
| Max output | 4,096 tokens |
| Input modalities | text |
| Reasoning / tool use | no / yes |
| Intelligence / coding index | 5.5 / 10.7 |
| Released | 2023-05-28 |
| Retirement date | none announced |

## About

GPT-3.5 Turbo is OpenAI's fastest model. It can understand and generate natural language or code, and is optimized for chat and traditional completion tasks.

Training data up to Sep 2021.

## Price history

- 2026-09-24: $0.5 in / $1.5 out

## Cheaper alternatives with similar intelligence

- [GLM 5.3 Flash](https://modelbank.ai/models/glm-5.3-flash): $0.0399 / $0.0784, intelligence 27.8
- [Granite 4.2 8B](https://modelbank.ai/models/granite-4.2-8b): $0.06 / $0.15, intelligence 5.1
- [Nemotron 3.5 Lightning](https://modelbank.ai/models/nemotron-3.5-lightning): $0.07 / $0.2, intelligence 5.5
- [DeepSeek V4.1 Flash 1017](https://modelbank.ai/models/deepseek-v4.1-flash-1017): $0.098 / $0.29, intelligence 28.6
- [MiMo-V2.6-Flash](https://modelbank.ai/models/mimo-v2.6-flash): $0.14 / $0.28, intelligence 26.7

JSON: https://modelbank.ai/api/v1/models/gpt-3.5-turbo