AI Model Release Tracker

GPT-4

Released

GPT-4 is an AI model released by OpenAI on Tuesday, Mar 14 2023, 104 days after GPT-3.5. It has a 8k token context window. Benchmark results (shown below) cover GSM8K, HumanEval, and MMLU.

API pricing

InputWhat you pay for everything you send the model — your question, plus any documents or earlier conversation you include with it.
$30.00
OutputWhat you pay for the text the model writes back. It is normally the dearer half: producing an answer costs more than reading one.
$60.00
USD per 1M tokensEvery price here is for one million tokens. A token is roughly three-quarters of a word, so a million tokens is about 750,000 words of text.Verified August 18, 2026Read from developers.openai.com. Click the check to open the source.

Available from

Azure$30.00$60.008K
OpenAI$30.00$60.008K
USD per 1M tokensEvery price here is for one million tokens. A token is roughly three-quarters of a word, so a million tokens is about 750,000 words of text.Checked October 18, 2026Third-party rates from openrouter.ai, not the lab’s own list price.

Benchmarks

Coding

HumanEvalFunction synthesis — 164 small Python problems: the AI is given a function's description and has to write the working function. This was the coding benchmark of the GPT-3.5 and GPT-4 era, before the field moved to fixing real bugs in real repositories. Higher is better.
67%
#2 of 3

Reasoning & science

GSM8KGrade-school math — Grade-school maths word problems that take a few steps of arithmetic to work through. It separated the models of 2022 and 2023 sharply, then saturated. One caveat on the historical numbers: OpenAI included part of the GSM8K training set in GPT-4's pre-training mix, so GPT-4's score is not a clean few-shot result. Higher is better.
92%
#1
MMLUGeneral knowledge — A 57-subject multiple-choice exam — history, law, medicine, maths — that was the standard measure of how much a model knows from 2020 until roughly 2024, when frontier scores crowded into the high 80s and labs moved on to harder tests. The scores here were published years apart under different testing setups, so read them as a historical record rather than a like-for-like ranking. Higher is better.
86.4%
#2 of 4

Compare GPT-4 with

GPT-4

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About

GPT-4, released March 14, 2023, was the model that proved scaling kept working. It passed a simulated bar exam in the top 10% of test takers, accepted image input, and was so far ahead of contemporaries that it anchored ChatGPT Plus, Microsoft's Bing Chat, and the first wave of serious commercial LLM applications. Notably, Anthropic released Claude 1 the very same day.

OpenAI published almost no technical details — no parameter count, architecture, or training data — a break from research-lab tradition that set the industry's closed-frontier norm. GPT-4 headed OpenAI's lineup for more than a year, extended by GPT-4 Turbo's 128K context window in November 2023, until GPT-4o replaced it in May 2024.

Frequently asked questions

GPT-4 was released by OpenAI on Tuesday, Mar 14 2023.

All OpenAI releases

47 tracked

2022

1 release
GPT-3.5
Nov 30 2022