GPT-3.5 Turbo
OpenAIGPT-3.5 Turbo was released via the OpenAI API in March 2023 and powered the original ChatGPT launched in November 2022. It represented a major improvement over GPT-3 in instruction-following and conversational ability. The model features a 16K token context window (16,385 tokens). Priced at \$0.50/\$1.50 per million tokens (input/output). Largely superseded by GPT-4o mini, which is cheaper and more capable, but remains historically significant as the model behind ChatGPT's viral launch.
Pricing
| Type | Price per MTok |
|---|---|
| Input | $0.50 |
| Output | $1.50 |
Benchmarks2
GPT Family7
| Model | Tier | Released | Input $/MTok |
|---|---|---|---|
| GPT-4.1 | flagship | 2025-04-14 | $2.00 |
| GPT-4.1 mini | mini | 2025-04-14 | $0.40 |
| GPT-4.1 nano | nano | 2025-04-14 | $0.10 |
| GPT-4o mini | mini | 2024-07-18 | $0.15 |
| GPT-4o | flagship | 2024-05-13 | $2.50 |
| GPT-4 Turbo | flagship | 2023-11-06 | $10.00 |
| GPT-4 | flagship | 2023-03-14 | $30.00 |
Other OpenAI Models6
Details
Model FamilyGPT
Tiermid
Generation3.5
Release Date2023-03-01
Context Window16K tokens
Training Cutoff2021-09
Open WeightNo
Modalitytext
Capabilities1
tool-use
Sources2
Tags
gptgpt-3chatgpthistorical