References to “gpt-5-reasoning-alpha-2025-07-13” have already been spotted on X, with code showing “reasoning_effort: high” in the model configuration. These sightings suggest the model has entered final testing phases, with testers getting their hands on the code and security experts doing red teaming on the model to test vulnerabilities. Unifying OpenAI’s model lineup The new model… Read More »
The early announcement has prompted Google DeepMind, which had prepared its own IMO results for the agreed-upon date, to move up its own IMO-related announcement to later today. Harmonic plans to share its results as originally scheduled on July 28. In response to the controversy, OpenAI research scientist Noam Brown posted on X, “We weren’t… Read More »
On Thursday, Anthropic unveiled specialized AI models designed for US national security customers. The company released “Claude Gov” models that were built in response to direct feedback from government clients to handle operations such as strategic planning, intelligence analysis, and operational support. The custom models reportedly already serve US national security agencies, with access restricted… Read More »
The release comes just two weeks after OpenAI made GPT-4 unavailable in ChatGPT on April 30. That earlier model, which launched in March 2023, once sparked widespread hype about AI capabilities. Compared to that hyperbolic launch, GPT-4.1’s rollout has been a fairly understated affair—probably because it’s tricky to convey the subtle differences between all of… Read More »
One of the most influential—and by some counts, notorious—AI models yet released will soon fade into history. OpenAI announced on April 10 that GPT-4 will be “fully replaced” by GPT-4o in ChatGPT at the end of April, bringing a public-facing end to the model that accelerated a global AI race when it launched in March… Read More »
On Monday, OpenAI announced the GPT-4.1 model family, its newest series of AI language models that brings a 1 million token context window to OpenAI for the first time and continues a long tradition of very confusing AI model names. Three confusing new names, in fact: GPT‑4.1, GPT‑4.1 mini, and GPT‑4.1 nano. According to OpenAI,… Read More »
Perhaps because of the disappointing results, Altman had previously written that GPT-4.5 will be the last of OpenAI’s traditional AI models, with GPT-5 planned to be a dynamic combination of “non-reasoning” LLMs and simulated reasoning models like o3. A stratospheric price and a tech dead-end And about that price—it’s a doozy. GPT-4.5 costs $75 per… Read More »
On Thursday during a live demo as part of its “12 days of OpenAI” event, OpenAI announced a new tier of ChatGPT with higher usage limits for $200 a month and the full version of “o1,” the full version of a so-called reasoning model the company debuted in September. Unlike o1-preview, o1 can now process… Read More »
But it was really motivated by just an enormous, not only opportunity, but a moral obligation in a sense, to do something that was better done outside in order to design better medicines and have very direct impact on people’s lives. Ars: The funny thing with ChatGPT is that I was using GPT-3 before that.… Read More »
While Bing Chat’s unhinged nature was caused in part by how Microsoft defined the “personality” of Sydney in the system prompt (and unintended side-effects of its architecture with regard to conversation length), Ars Technica’s saga with the chatbot began when someone discovered how to reveal Sydney’s instructions via prompt injection, which Ars Technica then published.… Read More »