# GPT-3.5

GPT-3.5 is an AI model released by OpenAI on Nov 30 2022.

## Facts

| Field | Value |
| --- | --- |
| Model | GPT-3.5 |
| Developer | OpenAI |
| Release date | Wednesday, Nov 30 2022 |
| Licensing | Proprietary |

## About GPT-3.5

GPT-3.5 is the model that started the modern AI race. On November 30, 2022 OpenAI wrapped it in a simple chat interface called ChatGPT, which reached 100 million users within two months — the fastest-growing consumer application in history at the time. Every release on this tracker's timeline is measured from that day.

Technically a fine-tuned descendant of GPT-3 trained with reinforcement learning from human feedback, GPT-3.5 was quickly surpassed — GPT-4 arrived less than four months later — but its free availability kept it the world's most-used language model well into 2024.

OpenAI never published a benchmark table for GPT-3.5 on its own. The figures on record come from the GPT-4 technical report in March 2023, where GPT-3.5 was the baseline the new model was announced against: 70.0% on MMLU, 57.1% on GSM8K and 48.1% on HumanEval. Those were strong numbers for the moment and are useful now mainly as a starting line — every one of them was a solved problem within two years.

## Questions and answers

### When was GPT-3.5 released?

GPT-3.5 was released by OpenAI on Wednesday, Nov 30 2022.

### Who made GPT-3.5?

GPT-3.5 was built by OpenAI. Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.

### Is GPT-3.5 open source?

No. GPT-3.5 is a proprietary model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.

### What came before and after GPT-3.5?

It was followed by GPT-4 on Mar 14 2023.


---

Canonical page: https://aireleasetracker.com/model/openai/gpt-3.5
Full dataset: https://aireleasetracker.com/llms-full.txt · JSON: https://aireleasetracker.com/models.json
Source: AI Release Tracker (https://aireleasetracker.com). Most benchmark scores come from lab launch material; gathered results identify the leaderboard that published them.