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Type: AI model or model family

GPT-5.5 xhigh appears in the radar stream as a model or model family. This page is a living index of dated mentions and sources — open Recent Updates and Backlinks for context, not a full product brief.

Recent Updates

  • 2026-06-11: Datasette 1.0a33 Adds JSON Extras to API (Simon Willison’s Weblog) · simonwillison.net — Anthropic · OpenAI Simon Willison · Claude Fable 5
  • 2026-06-14: Publishing WASM Wheels to PyPI for Pyodide Support (Simon Willison’s Weblog) · simonwillison.net — Roblox Simon Willison
  • 2026-06-21: Cloudflare adds temporary Workers projects that live for 60 minutes (Simon Willison’s Weblog) · simonwillison.net — Cloudflare Codex Desktop Simon Willison
  • 2026-06-30: shot-scraper video adds storyboard-driven demo recording for web routines (Simon Willison’s Weblog) · simonwillison.net — Code Agents Simon Willison
  • 2026-07-14: AdvancedMathBench benchmarks advanced mathematical proof generation and verification (cs.CL updates on arXiv.org) · arxiv.org — LLM Evals

FAQ

What is GPT-5.5 xhigh?

GPT-5.5 xhigh appears in the radar stream as a model or model family. This page is a living index of dated mentions and sources — open Recent Updates and Backlinks for context, not a full product brief.

What does this page track?

Dated radar mentions, source links, related concepts, and builder-relevant context for GPT-5.5 xhigh, collected automatically by GROUNDING.

When was GPT-5.5 xhigh last mentioned?

GPT-5.5 xhigh was most recently mentioned in a radar update dated 2026-07-14.