2026 in LLMs (so far)
Simon Willison's WeAreDevelopers keynote surveys 2026 LLM trends, starting with Claude Opus 4.5 and GPT-5.1.
Simon Willison gave the closing keynote at the WeAreDevelopers World Congress North America in San Jose, surveying LLM developments so far in 2026. He dates the year's story from November 2025, when Anthropic released Claude Opus 4.5 and OpenAI released GPT-5.1, describing both as incremental gains over prior models. Annotated slides and notes accompany the YouTube recording of the talk.
- Closing keynote at WeAreDevelopers World Congress North America in San Jose.
- Chronological tour of 2026 LLM trends, with annotated slides and notes.
- Frames November 2025 Claude Opus 4.5 and GPT-5.1 releases as incremental.
- Organizations
- WeAreDevelopers
- Countries
- United States
- AI models
- Claude Opus 4.5GPT-5.1
From the original article
On Friday I gave the closing keynote at the WeAreDevelopers World Congress North America in San Jose. I tied together the key trends from the past year into a chronological exploration of everything that happened in 2026. The video is on YouTube ; here are my annotated slides and notes to accompany the talk.
simonwillison.net
A short excerpt; the article and its images belong to the publisher. Summary, key facts and assessment above are AI-written from the article and can be wrong.