Type: AI model or model family
Concepts: Agents Code Agents Open Source LLMs Embeddings RAG Mentioned alongside: Anthropic GPT-6 Astra OpenAI Claude Hacker News Recent briefs: 2026-10-14 2026-10-12 2026-10-09 2026-10-08 2026-10-07
Recent Updates
- 2026-09-22: Anthropic Releases Claude Opus 5.5 with Price Drop and Increased Rate Limits (breakingnewsofficial) · t.me — Anthropic · Fable 5.1 · Opus 5
- 2026-09-23: Anthropic on Accelerating claude.ai 3x via an Autonomous Engineering Loop (breakingnewsofficial) · claude.dev — MCP Agents Tool Use Anthropic · Datadog
- 2026-09-25: Hacker News Reports Widespread OpenAI Codex Outage (breakingnewsofficial) · news.ycombinator.com — OpenAI · Hacker News · Twitter/X
- 2026-09-27: A Practical Introduction to TLA+ and Formal Verification in Agentic Coding (breakingnewsofficial) · reasonable.io — Agents Code Agents Reasonable Datadog Boris Cherny
- 2026-09-28: Simon Willison Builds Bluesky Reply Bot Checker Using Opus 5.5 (breakingnewsofficial) · simonwillison.net — Twitter · Bluesky Simon Willison
- 2026-09-28: Autonomous Creative Orchestration with Claude Projects and Cloud Execution (breakingnewsofficial) · felixrieseberg.com — Agents Agent Memory Werner Herzog
- 2026-09-28: H Company Releases Holo4 Agentic Models for Computer Use Across GUIs, Code, and APIs (breakingnewsofficial) · huggingface.co — Agents Tool Use MCP Open Source LLMs LLM Evals H company Hugging Face · OpenAI · Alibaba Cloud Holo4 Holo4-27B Holo4-35B-A3B Holotron 3 Holotron4 Nano · Qwen3.8-27B · Qwen3.6-35B-A3B
- 2026-09-29: Developer Frustrations with OpenAI and Anthropic Subscription Limits and Guardrails (breakingnewsofficial) · t.me — OpenAI · Anthropic · Haiku
- 2026-09-29: Livenerf: Continuous Benchmark Tracking Post-Launch Degradation in Claude Opus 5.5 (breakingnewsofficial) · github.com — LLM Evals Code Agents Anthropic · UK AI Security Institute · Opus 5
- 2026-09-30: Stanford Introduces HomeBody: Robotics Skill Execution via LLM Tool Calling (breakingnewsofficial) · qbitai.com — Agents Tool Use Agent Memory Stanford · Unitree · Anthropic · OpenAI henry · GPT-6 Astra · Claude MolmoAct · GPT-6 Sol · GPT-5.6 Sol · Opus 5
- 2026-10-01: Using Frontier AI Agents and Semantic Search for Historical Research and Archival Discovery (breakingnewsofficial) · resobscura.substack.com — Agents Embeddings RAG Dutch East India Company GLOBALISE Carter Church Isbrant Cornelisz van Petten GPT-6 Astra
- 2026-10-03: Getting the Most out of Opus 5.5 in Claude and Claude Code (breakingnewsofficial) · claude.dev — Code Agents Hacker News · Opus 5
- 2026-10-07: Claude Haiku 5.5 Released with Adjustable Effort and Reduced Pricing (breakingnewsofficial) · anthropic.com — Agents LLM Evals Hacker News · AWS · Google Cloud · Microsoft Azure · Claude Haiku 5.5 · Sonnet 5.5 · Haiku 4.5 · Claude Sonnet 5.5 · Sonnet 5 · Opus 5
- 2026-10-08: Experimental Rust Port of TypeScript Compiler Generated via LLMs (breakingnewsofficial) · github.com — Code Agents Microsoft · OpenAI · Anthropic Effect-TS · GPT-5.6 Sol · GPT-6 Astra
- 2026-10-08: Using Claude Code and Agent Audits to Identify an Exoplanet Candidate in NASA TESS Data (breakingnewsofficial) · reddit.com — Agents Code Agents NASA · MIT · Hacker News · Reddit · Fable 5.1
- 2026-10-08: Developer Workflow Shift and KV Cache Economics of DeepSeek 4.1 Flash (breakingnewsofficial) · dgt.is — Open Source LLMs Anthropic · OpenAI · DeepSeek DeepSeek 4.1 Flash · Opus · GLM
- 2026-10-09: Investigating 400 Years of Historical Archives with AI and Vector Embeddings (breakingnewsofficial) · jessewaites.com — Embeddings RAG Dutch East India Company Anthropic Benjamin Breen
- 2026-10-12: Why ‘Just Ask Claude’ Remains a Rare and Valuable Skill (breakingnewsofficial) · justismills.substack.com — Context Engineering OpenAI · Anthropic · YouTube · WordPress Astra 6
- 2026-10-12: Using AI Coding Agents to Jailbreak a Kindle and Build KindleCTL (breakingnewsofficial) · nirajrajgor.com — Code Agents Agents Anthropic · Amazon · Hacker News sparklerfish · GPT-6 Astra · GPT-5.6 Sol · Fable 5.1
Incident radar
GROUNDING’s Hallucination Incident Index has flagged 2 incidents naming Opus 5.5 — a heuristic proxy over the AI-news radar’s daily journal (hallucination/jailbreak/refusal/bias keyword matches), not a verified incident registry.
- Severity: S3 1 · S4 1
- Category: Hallucination 1 · Bias 1
Most recent:
- Investigating 400 Years of Historical Archives with AI and Vector Embeddings source (2026-10-09)
- Using Claude Code and Agent Audits to Identify an Exoplanet Candidate in NASA TESS Data source (2026-10-08)
Full breakdown: Hallucination Incident Index · Subscribe: incident-index RSS feed
FAQ
What is Opus 5.5?
Opus 5.5 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 Opus 5.5, collected automatically by GROUNDING.
When was Opus 5.5 last mentioned?
Opus 5.5 was most recently mentioned in a radar update dated 2026-10-12.
Category: Text / Language Models