Source URL: https://simonwillison.net/2025/Mar/27/gpt-4o-update/
Source: Simon Willison’s Weblog
Title: GPT-4o got an another update in ChatGPT
Feedly Summary: GPT-4o got an another update in ChatGPT
This is a somewhat frustrating way to announce a new model. @OpenAI on Twitter just now:
GPT-4o got an another update in ChatGPT!
What’s different?
Better at following detailed instructions, especially prompts containing multiple requests
Improved capability to tackle complex technical and coding problems
Improved intuition and creativity
Fewer emojis 
This sounds like a significant upgrade to GPT-4o, albeit one where the release notes are limited to a single tweet.
The @OpenAIDevelopers account confirmed that this is also now available in their API:
chatgpt-4o-latest is now updated in the API, but stay tuned—we plan to bring these improvements to a dated model in the API in the coming weeks.
I wrote about chatgpt-4o-latest last month – it’s a model alias in the OpenAI API which provides access to the model used for ChatGPT, available since August 2024. It’s priced at $5/million input and $15/million output – a step up from regular GPT-4o’s $2.50/$10.
I’m glad they’re going to make these changes available as a dated model release – the chatgpt-4o-latest alias is risky to build software against due to its tendency to change without warning.
A more appropriate place for this announcement would be the OpenAI Platform Changelog, but that’s not had an update since the release of their new audio models on March 20th.
Tags: llm-release, generative-ai, openai, chatgpt, ai, llms
AI Summary and Description: Yes
Summary: The text discusses an update to the GPT-4o model, highlighting notable improvements in its functionality, including better instruction-following and enhanced technical problem-solving abilities. This update is particularly relevant for professionals working with AI and AI security, as it affects API capabilities and software development processes.
Detailed Description:
The announcement regarding the update of the GPT-4o model underlines several key advancements that could significantly impact developers and organizations utilizing AI technologies. Here are the major points of relevance:
– **Improvements in Functionality**:
– The ability to follow more detailed instructions has been enhanced, making the model more reliable for complex tasks.
– Improved capabilities in tackling intricate technical and coding problems could lead to more effective integrations in software projects.
– **Enhanced Creativity and Intuition**:
– The update suggests that the model now possesses better creative problem-solving skills, which is vital for applications that require innovative outputs.
– **API Integration**:
– The updated model is now available through the OpenAI API under the alias chatgpt-4o-latest, which indicates increased utility for developers.
– The pricing model has changed, reflecting the enhanced capabilities: $5/million input and $15/million output, up from the previous figures, indicating a potential increase in operational costs for businesses.
– **Release Note Concerns**:
– The announcement’s limitation to a single tweet raises concerns about communication and clarity when it comes to significant updates. Developers may find it challenging to stay informed about changes that could impact their projects.
– **Risk Factors**:
– The chatgpt-4o-latest model carries risks for companies wishing to build software against it due to its propensity for unexpected changes. This creates challenges in maintaining software stability and predictability.
– **Lack of Formal Communication**:
– The mention of the absence of an update on the OpenAI Platform Changelog for some time underscores a potential gap in formal communication regarding product changes, which can lead to confusion in the development community.
In summary, this update to GPT-4o could have significant implications for developers and organizations integrating AI into their systems. The enhancements, pricing adjustments, and communication shortcomings are all critical considerations for professionals focused on AI, software security, and compliance as they adapt their strategies around this evolving technology.