Type: AI model or model family
Concepts: LLM Evals Agents Code Agents Long Context Mentioned alongside: Anthropic Opus 5.5 OpenAI Astra AWS Recent briefs: 2026-10-13 2026-10-07 2026-10-06 2026-10-01 2026-09-29
Recent Updates
- 2026-09-23: Anthropic Launches Claude Opus 5.5 with Benchmark Gains, Pricing Cuts, and Coding Improvements (breakingnewsofficial) · qbitai.com — Code Agents LLM Evals Anthropic · OpenAI Walleye Capital · METR · Frontier Design Dyno Therapeutics Dario Amodei · Claude Opus 5.5 · Opus 5 · GPT-6 Astra · Claude Fable 5.1 · GPT-5.6 Sol · Claude Mythos 5.1 · Opus 4.8 · Haiku 4.5 · Haiku 5.5
- 2026-10-01: Google Announces Gemini 4 Argon with 1M Token Output and Cybersecurity Focus (breakingnewsofficial) · qbitai.com — Code Agents LLM Evals Long Context Google · OpenAI · Anthropic · DeepMind · Wiz · Bloomberg Koray Kavukcuoglu Zirui Wang Sundar Pichai Demis Hassabis · Gemini 4 Argon · Claude Opus 5.5 · GPT-6 Astra · GPT-6.1 Sol · Gemini 3.8 Flash Gemini 3.8 Flash High
- 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 · Opus 5.5 · Haiku 4.5 · Claude Sonnet 5.5 · Sonnet 5 · Opus 5
- 2026-10-13: Bughunt Benchmark Update Reveals LLM Benchmark Cheating and Inefficient Token Consumption (breakingnewsofficial) · t.me — LLM Evals Pawel Huryn Muse Wonder
FAQ
What is Sonnet 5.5?
Sonnet 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 Sonnet 5.5, collected automatically by GROUNDING.
When was Sonnet 5.5 last mentioned?
Sonnet 5.5 was most recently mentioned in a radar update dated 2026-10-13.
Category: Text / Language Models