OpenAI unveils new AI reasoning models and coding tool

April 16, 2025, 12:20 pm

OpenAI held a product announcement where it introduced ground‐breaking AI innovations. The company launched its new o3 and o4‑mini reasoning models, designed to significantly enhance capabilities in math, coding, science, and visual understanding. At the same event, OpenAI also debuted Codex CLI, an open source coding tool for terminals that integrates local computing tasks with its advanced AI systems. Both products were announced simultaneously, highlighting OpenAI’s strategy to embed AI more deeply into programming workflows and everyday applications.

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techinasia.com / OpenAI releases its ‘smartest’ models yet

OpenAI has launched two new models, o3 and o4-mini, to improve the reasoning capabilities of its ChatGPT platform.

simonwillison.net / Quoting Ted Sanders, OpenAI

Our hypothesis is that o4-mini is a much better model, but we'll wait to hear feedback from developers. Evals only tell part of the story, and we wouldn't want to prematurely deprecate a model that developers continue to find value in. Model behavior is extremely high dimensional, and it's...

simonwillison.net / Quoting James Betker

I work for OpenAI. [...] o4-mini is actually a considerably better vision model than o3, despite the benchmarks. Similar to how o3-mini-high was a much better coding model than o1. I would recommend using o4-mini-high over o3 for any task involving vision. — James Betker, OpenAI Tags:...

arstechnica.com / OpenAI releases new simulated reasoning models with full tool access

New o3 model appears "near-genius level," according to one doctor, but it still makes mistakes.

winbuzzer.com / OpenAI’s Codex CLI Brings AI Coding to the Terminal, Without Lock-In

Codex CLI is a free, open source tool for model-agnostic AI coding that lets developers use AI directly in the terminal without relying on cloud-based platforms. The post OpenAI’s Codex CLI Brings AI Coding to the Terminal, Without Lock-In appeared first on WinBuzzer.

theinformation.com / OpenAI Releases New Reasoning Models, Open-Source Coding Assistant - The Information

OpenAI Releases New Reasoning Models, Open-Source Coding Assistant The Information

winbuzzer.com / OpenAI Releases New o3 and o4-mini Models, Giving ChatGPT a Mind of Its Own

OpenAI has launched o3 and o4-mini, giving ChatGPT the ability to reason and choose tools autonomously across text, code, image, and file inputs. The post OpenAI Releases New o3 and o4-mini Models, Giving ChatGPT a Mind of Its Own appeared first on WinBuzzer.

the-decoder.com / OpenAI’s new o3 and o4-mini models reason with images and tools

OpenAI is expanding its o-series with two new language models featuring improved tool usage and strong performance on complex tasks. The models aim for agent-like problem-solving capabilities. The article OpenAI’s new o3 and o4-mini models reason with images and tools appeared first on...

venturebeat.com / OpenAI launches o3 and o4-mini, AI models that ‘think with images’ and use tools autonomously

OpenAI launches groundbreaking o3 and o4-mini AI models that can manipulate and reason with images, representing a major advance in visual problem-solving and tool-using artificial intelligence.

macrumors.com / OpenAI Releases Smarter AI Models

OpenAI today announced the release of new o3 and o4-mini AI models, which the company says are its smartest models to date. o3 and o4-mini can use and combine all ChatGPT tools, including web searches, analyzing files and data with Python, reasoning about visual input, and generating...

techcrunch.com / OpenAI partner says it had relatively little time to test the company’s o3 AI model

An organization OpenAI frequently partners with to probe the capabilities of its AI models and evaluate them for safety, Metr, suggests that it wasn’t given much time to test one of the company’s highly capable new releases, o3. In a blog post published Wednesday, Metr writes that one red...

bgr.com / OpenAI debuts o3 and o4-mini advanced reasoning models

On Wednesday, OpenAI launched its latest reasoning models, o3 and o4-mini. As with its other o-series models, OpenAI’s o3 and o4-mini think for a longer … The post OpenAI debuts o3 and o4-mini advanced reasoning models appeared first on BGR.

simonwillison.net / Introducing OpenAI o3 and o4-mini

Introducing OpenAI o3 and o4-mini OpenAI are really emphasizing tool use with these: For the first time, our reasoning models can agentically use and combine every tool within ChatGPT—this includes searching the web, analyzing uploaded files and other data with Python, reasoning deeply about...

simonwillison.net / openai/codex

openai/codex Just released by OpenAI, a "lightweight coding agent that runs in your terminal". Looks like their version of Claude Code. Tags: ai-assisted-programming, generative-ai, ai-agents, openai, ai, llms

openai.com / OpenAI o3 and o4-mini

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techcrunch.com / OpenAI debuts Codex CLI, an open source coding tool for terminals

In a bid to inject AI into more of the programming process, OpenAI is launching Codex CLI, a coding “agent” designed to run locally from terminal software. Announced on Wednesday alongside OpenAI’s newest AI models, o3 and o4-mini, Codex CLI links OpenAI’s models with local code and...

techcrunch.com / OpenAI launches a pair of AI reasoning models, o3 and o4-mini

OpenAI announced on Thursday the launch of o3 and o4-mini, new AI reasoning models designed to pause and work through questions before responding. The company calls o3 its most advanced reasoning model ever, outperforming the company’s previous models on tests measuring math, coding, reasoning,...

theverge.com / OpenAI’s upgraded o3 model can use images when reasoning

OpenAI is releasing two new AI reasoning models today: o3, which the company calls its “most powerful reasoning model,” and o4-mini, which is a smaller and faster model that “achieves remarkable performance for its size and cost,” according to a blog post. The company also says that o3 and...

cnet.com / OpenAI's GPT-o3 Reasoning Model Is Ready for Prime Time

This is the second family of models OpenAI has dropped this week following the launch of GPT-4.1.

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