Tuesday, 14th March 2023
We’ve created GPT-4, the latest milestone in OpenAI’s effort in scaling up deep learning. GPT-4 is a large multimodal model (accepting image and text inputs, emitting text outputs) that, while less capable than humans in many real-world scenarios, exhibits human-level performance on various professional and academic benchmarks. [...] We’ve spent 6 months iteratively aligning GPT-4 using lessons from our adversarial testing program as well as ChatGPT, resulting in our best-ever results (though far from perfect) on factuality, steerability, and refusing to go outside of guardrails.
— OpenAI
Introducing Claude. Anthropic released the first two versions of Claude, "a next-generation AI assistant based on Anthropic’s research into training helpful, honest, and harmless AI systems". Claude and Claude Instant are both available via a web chat interface and through their API.
(I back-filled this link on Feb 25th 2026 to help fill out my llm-release tag.)
GPT-4 Technical Report (PDF). 98 pages of much more detailed information about GPT-4. The appendices are particularly interesting, including examples of advanced prompt engineering as well as examples of harmful outputs before and after tuning attempts to try and suppress them.