https://blog.baifan.site/en/tags/openai/Recent content in OpenAI on ByF (BaiFan) · Daily Deep ThinkHugo -- gohugo.ioenblog@baifan.site (ByF (BaiFan))blog@baifan.site (ByF (BaiFan))CC BY-NC 4.0Sat, 19 Sep 2026 23:02:35 +0800https://blog.baifan.site/en/codex-for-open-source/Sat, 19 Sep 2026 23:02:35 +0800blog@baifan.site (ByF (BaiFan))https://blog.baifan.site/en/codex-for-open-source/<p>An email popped up in my inbox today: &ldquo;You can just build things, enjoy 6 months on us.&rdquo;</p> <p>Sender: the Codex team at OpenAI. The first line, in big letters: &ldquo;You&rsquo;re in.&rdquo; Then: &ldquo;Thanks for maintaining open source projects.&rdquo;</p> <p>I stared at that line three times and couldn&rsquo;t help laughing out loud.</p> <figure class="my-6 flex flex-col items-center"> <img src="https://blog.baifan.site/pictures/posts/codex-open-source-email.png" alt="Free ride: secured" style="max-width: 800px;" class="rounded-lg shadow-md mx-auto center" loading="lazy" /> <figcaption class="mt-2 text-center text-sm text-neutral-500 dark:text-neutral-400 italic">Free ride: secured</figcaption> </figure> <p>A while back I filled out their Codex for Open Source application on a whim. Didn&rsquo;t expect much — I just listed the PRs I&rsquo;d submitted to context-mode, plus my own byf and dev-skills.</p>https://blog.baifan.site/en/ai-api-suffixes-explained/Tue, 14 Apr 2026 14:00:00 +0800blog@baifan.site (ByF (BaiFan))https://blog.baifan.site/en/ai-api-suffixes-explained/<p>We often see URLs like these:</p> <div class="highlight-wrapper"><div class="highlight"><div class="chroma"> <table class="lntable"><tr><td class="lntd"> <pre tabindex="0" class="chroma"><code><span class="lnt">1 </span><span class="lnt">2 </span><span class="lnt">3 </span></code></pre></td> <td class="lntd"> <pre tabindex="0" class="chroma"><code class="language-plaintext" data-lang="plaintext"><span class="line"><span class="cl">/v1/chat/completions </span></span><span class="line"><span class="cl">/v1/messages </span></span><span class="line"><span class="cl">/v1/responses</span></span></code></pre></td></tr></table> </div> </div></div> <p>These suffixes are not decoration — they define a complete request and response data structure. Pick the wrong one and your code either errors out or silently loses data.</p> <!-- more --> <p>This article starts at <code>/v1/completions</code> and works its way to <code>/v1/responses</code>, explaining what each suffix stands for, why it was designed that way, and where the common pitfalls are.</p>