OpenAI says GPT-5.4 Thinking and Pro are rolling out gradually across ChatGPT, the API, and Codex. The company positions GPT-5.4 as a unified frontier model for professional work with stronger coding, tool use, and 1M-token context.
OpenAI says GPT-5.4 Thinking is shipping in ChatGPT, with GPT-5.4 also live in the API and Codex and GPT-5.4 Pro available for harder tasks. The launch packages reasoning, coding, and native computer use into a single professional-work model with up to 1M tokens of context.
OpenAI introduced ChatGPT for Excel on March 5, 2026. The feature targets paid ChatGPT users and adds spreadsheet-native analysis and formula generation, plus financial data connectivity for regulated workflows.
OpenAI introduced ChatGPT for Excel on March 5, 2026. The feature targets paid ChatGPT users and adds spreadsheet-native analysis and formula generation, plus financial data connectivity for regulated workflows.
OpenAI announced that GPT-5.4 Thinking and GPT-5.4 Pro are rolling out in ChatGPT, while GPT-5.4 is already available in the API and Codex. The launch positions GPT-5.4 as a unified frontier model for reasoning, coding, and agentic workflows.
On March 3, 2026 (UTC), OpenAI said on X that GPT-5.3 Instant is rolling out to all ChatGPT users. Its linked product post details improvements in refusal behavior, web-grounded answer synthesis, and availability across ChatGPT and API.
OpenAI released GPT-5.3 Instant on March 3, 2026, claiming fewer unnecessary refusals, better web synthesis, and double-digit hallucination reductions across internal evaluations.
OpenAI released GPT-5.3 Instant on March 3, 2026 as a faster, cheaper derivative of GPT-5.3 for day-to-day use. The company says it matches GPT-4.1 latency and pricing while improving instruction following and reducing hallucinations.
Anthropic's Claude iOS app shot to number one on the US App Store as users switched from ChatGPT in solidarity with Anthropic's decision to refuse Pentagon military surveillance requests.
A study published in Science journal found that ChatGPT surfaced a surprising insight in particle physics research that human scientists had missed, raising new questions about AI's role in scientific discovery.
Following Anthropic's refusal to cooperate with the Pentagon and its announcement of legal action, a wave of ChatGPT users switched to Claude, pushing the Claude app to No. 1 on the US App Store.
The 'Cancel ChatGPT' movement has gone mainstream following OpenAI's deal with the U.S. Department of Defense. Anthropic's refusal to apply Claude to mass surveillance or autonomous weapons has driven a wave of user migration from ChatGPT to Claude.