AI article
GPT-5.1 Was Retired on March 11 — Here's What Broke in Your LLM App
OpenAI retired GPT-5.1 on March 11 with automatic fallback to GPT-5.3/5.4. If your app calls gpt-5.1, it's now running a different model — silently. Here's e...
Dev.to | Mar 13, 2026 | Jamie Cole