What Happened
OpenAI launched GPT-4.1 as a new API-focused model family (including mini and nano variants), marketed around stronger coding, better instruction following, and improved long-context usage.
Why It Matters
GPT-4.1 made “million-token context windows” a first-class narrative for general-purpose developer models, and reframed frontier progress as a balance of quality, latency, and practical agent performance.
Technical Details
- Context window: Up to 1M tokens (as described in the announcement)
- Focus: Coding, instruction following, long-context comprehension
- Packaging: Family release (flagship + smaller variants)