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GPT-5.1 and Claude agents lose accuracy retrieving tool outputs from external files rather than context windows, measured on USGS PHREEQC geochemistry tasks.
Simon Willison summarizes major LLM developments in 2026, including Claude Opus 4.5 and GPT-5.1 releases and industry trends.
OpenAI is opening up about its goblin problem. After a report from Wired revealed instructions to OpenAI's coding model to "never talk about goblins, gremlins, raccoons, trolls, ogres, pigeons, or other animals or creatures," the AI startup published an explanation on its website, calling references to the creatures a "strange habit" its models developed as a result of their training. As outlined in the blog post, OpenAI began noticing metaphors referencing goblins and other creatures starting with its GPT-5.1 model - specifically when using the "Nerdy" personality option. OpenAI says the pro...
Tolan demonstrates voice-first AI companion using GPT-5.1 with low-latency responses, real-time context reconstruction, and memory-driven personalities.
GPT-5.2 System Card documents safety mitigations aligned with prior GPT-5 and GPT-5.1 methodologies.
OpenAI publishes system card for GPT-5.1-CodexMax detailing model and product-level safety mitigations including sandboxing.
OpenAI releases GPT-5.1-Codex-Max, faster agentic coding model for long-running project-scale work with enhanced reasoning.
GPT-5.1 API release adds faster adaptive reasoning, extended prompt caching, improved coding, apply_patch and shell tools.
OpenAI releases GPT-5.1 with improved conversational ability and customizable tone; rolling out to paid users today.
GPT-5.1 system card addendum reports updated safety metrics for Instant and Thinking variants, including mental health evaluations.