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Type: AI model

Concepts: LLM Evals Agents Code Agents Open Source LLMs Tool Use Mentioned alongside: Anthropic GLM-5.3 OpenAI CAISSI Claude Recent briefs: 2026-10-26 2026-10-25 2026-10-20 2026-10-13 2026-10-12

Recent Updates

  • 2026-09-22: LMSYS Arena Scores for MiMo-V2.6-Pro and Chinese Flash Models Comparison (breakingnewsofficial) · t.me — LLM Evals DeepSeek · MiMo-V2.6 Pro · Qwen3.8-Flash-Next · MiMo-V2.6-Flash · DeepSeek-V4.1-Flash · GLM-5.3-Flash · DeepSeek V4.1
  • 2026-10-13: Anthropic Strengthens Defenses Against Claude Distillation Attacks (breakingnewsofficial) · anthropic.com — Anthropic · Zhipu · Moonshot US Center for Advancing Innovation and Standards for Super Intelligence CAISSI · Claude · GLM-5.3 · Kimi
  • 2026-10-20: MiniMax Unveils M3.1 Flash Model Previously Benchmarked as Anonymous Space Bunny (breakingnewsofficial) · qbitai.com — Agents Code Agents Tool Use LLM Evals MiniMax · OpenRouter · Zapier · UC Berkeley · OpenAI · Anthropic · Google · DeepSeek · QbitAI Jay M3.1 Flash · Space Bunny · M3 V4.1 Flash · DeepSeek-V4.1-Flash-1017 · GPT-6.1 Sol · Claude Opus 5 · GLM-5.3 · GPT-5.6 Sol · Opus 5.5
  • 2026-10-25: GVS5H Harness: Zero-Shot Multi-Agent Self-Orchestration Matches Frontier Coding at Lower Cost (breakingnewsofficial) · github.com — Agents Open Source LLMs Code Agents LLM Evals OpenAI · Anthropic · OpenRouter · Qwen3.8-27B · Opus 5 · Qwen3.8-Flash-Next · GPT-5.6 Terra
  • 2026-10-26: Which Answer Did the Seventeen-Year-Old Write? A Behavioral Case Study of Author-Age Misattribution, Miscalibrated Confidence, and Non-Corrective Self-Explanation in Six Frontier Language Models (breakingnewsofficial) · arxiv.org — LLM Evals Anthropic · Google · OpenAI · xAI · DeepSeek · Gemini-3.1-Pro · GPT-5.6 Sol · Grok 4.5 · GPT-4o · DeepSeek V4

FAQ

What is Claude Fable 5?

Claude Fable 5 is Anthropic’s flagship fifth-generation Claude model, released June 2026 as the publicly available, safety-gated counterpart to the partner-restricted Mythos 5. It posts state-of-the-art results on agentic coding and science benchmarks, including roughly 80% on SWE-Bench Pro. GROUNDING tracks Claude Fable 5 releases, benchmarks, safety guardrails, and developer-facing capabilities.

What does this page track?

Dated radar mentions, source links, related concepts, and builder-relevant context for Claude Fable 5, collected automatically by GROUNDING.

When was Claude Fable 5 last mentioned?

Claude Fable 5 was most recently mentioned in a radar update dated 2026-10-26.