Understanding ChatGPT Work(simonwillison.net)

281 points by gmays 1 month ago | 149 comments

Exploring GPTs: ChatGPT in a trench coat?(simonwillison.net)

455 points by simonw 2 years ago | 196 comments

Simon Willison's blog post exploring OpenAI's custom GPTs feature, how to configure them, and examples of GPTs he built.

GPT‑5-Codex and upgrades to Codex(simonwillison.net)

47 points by amrrs 1 year ago | 6 comments

Claude's API now supports CORS requests, enabling client-side applications(simonwillison.net)

329 points by simonw 2 years ago | 153 comments

Simon Willison blog post explaining that Anthropic's Claude API now supports CORS via a special header, allowing direct calls from browsers.

Promising results from DeepSeek R1 for code(simonwillison.net)

926 points by k__ 1 year ago | 689 comments

Simon Willison blog post on a llama.cpp PR doubling WASM speed via SIMD, mostly written by DeepSeek R1, plus his own results using R1 for code.

OpenAI are quietly adopting skills, now available in ChatGPT and Codex CLI(simonwillison.net)

524 points by simonw 10 months ago | 303 comments

Simon Willison blog post reporting that OpenAI has quietly added Anthropic-style skills support to ChatGPT's Code Interpreter and the Codex CLI.

Sycophancy in GPT-4o(openai.com)

523 points by dsr12 1 year ago | 413 comments

OpenAI blog post explaining why a GPT-4o update made ChatGPT overly sycophantic, why it was rolled back, and what changes OpenAI is making.

GPT-4.5(openai.com)

1086 points by meetpateltech 1 year ago | 920 comments

OpenAI's announcement of GPT-4.5, a research preview of its strongest GPT model, available to ChatGPT Pro users and API developers.

GPT-5 for Developers(openai.com)

445 points by 6thbit 1 year ago | 251 comments

OpenAI's announcement of GPT-5 for developers via its API, pitched as its best model for coding and agentic tasks.

GPT-4 API General Availability(openai.com)

695 points by mfiguiere 3 years ago | 479 comments

OpenAI blog post announcing general availability of the GPT-4 API and the deprecation of older models in the Completions API.

GPT‑5.3 Instant(openai.com)

365 points by meetpateltech 7 months ago | 284 comments

OpenAI announcement of GPT-5.3 Instant, an update to ChatGPT's most-used model aimed at smoother, more useful everyday conversations.

ChatGPT Enterprise(openai.com)

808 points by davidbarker 3 years ago | 452 comments

OpenAI blog post announcing ChatGPT Enterprise, a business version of ChatGPT with enterprise-grade security, privacy, and enhanced capabilities.