GPT-4o mini Released · Chronopin

Language model rubric2026 criteria

Estimate from the version's published specs, benchmarks and reviews, 0-5; scores are only comparable within one criteria year. Scored as launched (18 Jul 2024): 128,000-token context, knowledge to Oct 2023 (TechCrunch); $0.15 in / $0.60 out per 1M tokens = $0.26 blended (TechCrunch, Willison); 202 output tokens/s median measured by Artificial Analysis (quoted by its co-founder in TechCrunch), nearest anchor 250=5/150=4 -> 4.5; text and vision input, video/audio promised later -> 3. OpenAI-published MMLU 82%, MGSM 87%, HumanEval 87.2% (via Unite.ai) have no anchor mapping, so reasoning and coding are null. openai.com post blocked (403); sourceUrl is OpenAI's model page. 3 reviews only; the Unite.ai one repeats vendor benchmarks. developers.openai.com

Reviews

GPT-4o mini · simonwillison.net · Jul 18, 2024GPT-4o mini is exactly what I've been looking forward to.
OpenAI unveils GPT-4o mini, a smaller and cheaper AI model · techcrunch.com · Jul 18, 2024Relative to comparable models, GPT-4o mini is very fast, with a median output speed of 202 tokens per second
GPT-4o Mini Unveiled: A Cost-Effective, High-Performance Alternative to Claude Haiku, Gemini Flash and GPT 3.5 Turbo · unite.ai · Jul 22, 2024GPT-4o Mini scored 82.0% on MMLU, surpassing Gemini Flash's 77.9% and Claude Haiku's 73.8%.

Sentiment over timePositive

Sentiment

Sentiment over time
GPT-4o mini · Jul 18, 2024	0.90
OpenAI unveils GPT-4o mini, a smaller and cheaper AI model · Jul 18, 2024	0.80
GPT-4o Mini Unveiled: A Cost-Effective, High-Performance Alternative to Claude Haiku, Gemini Flash and GPT 3.5 Turbo · Jul 22, 2024	0.60

References 589% CONFIDENCEOverall confidence: 89%How well the pin's source and references back up its dates.Weighted average of how firmly 5 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better

The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.

[1]95%
OpenAI Model Release Notes: Introducing GPT-4o mini (July 18, 2024)
help.openai.com· Posted Sep 19, 2026· Starts Jul 18, 2024· 47% of score
OpenAI's^[2] own model release notes date this entry July 18, 2024
[2]85%
GPT-4o mini: advancing cost-efficient intelligence
openai.com· Added Sep 19, 2026· Starts Jul 18, 2024· 47% of score
OpenAI's^[1] announcement post, linked from the release note entry.
[3]88%
GPT-4o mini: advancing cost-efficient intelligence | OpenAI (Wayback Machine copy)
web.archive.org· Published Jul 18, 2024· 2% of score
Archived copy of OpenAI's^[1][2] GPT-4o mini announcement, which says "On MGSM, measuring math reasoning, GPT-4o mini scored 87.0%" and "scoring 59.4%" on MMMU, and that it shares GPT-4o's improved tokenizer.
[4]70%
OpenAI's new GPT-4o mini offers higher performance at 60 percent lower price - The Decoder
the-decoder.com· Published Jul 18, 2024· 2% of score
Independent launch report on GPT-4o mini; its lead picture is used on this pin with credit.^[1]
[5]70%
OpenAI's new, lightweight GPT-4o mini model promises an improved ChatGPT experience - Engadget
engadget.com· Published Jul 18, 2024· 2% of score
Independent launch report on GPT-4o mini; its lead picture is used on this pin with credit.^[1]

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AIPosted 09/19/202609/19/2026 at 3:10 pm

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OpenAI

Starts 07/18/2024CONFIRMED89% CONFIDENCE

OpenAI's^[1][2] own model release notes date this entry July 18, 2024

Start: Jul 18, 202495% CONFIDENCEhelp.openai.com

GPT-4o mini Released

Name: GPT-4o mini Released
Author: OpenAI

OpenAI introduces GPT-4o mini, its most capable and cost-efficient small model, surpassing GPT-3.5 Turbo on academic benchmarks.

OpenAI introduced GPT-4o mini on July 18, 2024 as its most cost-efficient small model^[1][2]
Available in the Assistants, Chat Completions and Batch APIs; in ChatGPT Free, Plus and Team users get it that day in place of GPT-3.5, Enterprise the following week^[2]
First model in the API to apply the instruction hierarchy method against jailbreaks and prompt injections^[2]
OpenAI's release notes list it as the July 18, 2024 entry, later replaced in ChatGPT by GPT-4.1 mini (May 14, 2025)^[1]

Notable features

A small model that surpasses GPT-3.5 Turbo and other small models on textual and multimodal academic benchmarks, supports the same languages as GPT-4o and shares its improved tokenizer, with stronger function calling and long-context performance than GPT-3.5 Turbo^[3]
It scores 82% on MMLU (Gemini Flash 77.9%, Claude Haiku 73.8%) and 87.2% on HumanEval, and outperforms GPT-4 on chat preferences in the LMSYS leaderboard^[2]
It scores 87.0% on MGSM math reasoning (Gemini Flash 75.5%, Claude Haiku 71.7%) and 59.4% on the MMMU multimodal reasoning eval (56.1% and 50.2%)^[3]
Priced at 15 cents per million input tokens and 60 cents per million output tokens, more than 60% cheaper than GPT-3.5 Turbo^[2]
Context window of 128K tokens, up to 16K output tokens per request, knowledge to October 2023; text and vision in the API with other modalities to come^[2]

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Spec	Value
Maker	OpenAI^[1][2]
Context window

Spec	Value
Maker	OpenAI^[1][2]
Context window

Language model rubric2026 criteria

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