Claude Opus 5

Specifications

No specifications recorded yet.

Latest developments

GPT-6 Astra Now on Par With Claude Fable 5.1 in Updated Artificial Analysis Index Trending Topics · 1 week ago · 30 GitHub Introduces Project HydraFusion: Runtime Multi-Model Orchestration That Builds a Workflow Per Coding Task in Copilot CLI MarkTechPost · 1 week ago · 49 Google shipped four Gemini Flash models in 106 days. Yet its Gemini 3.5 Pro is still AWOL. Fortune · 22

Google launches two Gemini 3.8 models with cutting-edge reasoning capabilities SiliconANGLE · 2 weeks ago · 12

😺 Runway Solaris treats software like video The Neuron · 2 weeks ago · 42 Breaking Claude Code Opus 5 Auto Mode Simon Willison’s Weblog · 2 weeks ago · 10

Nvidia just showed that the harness, not the AI model, is now the real hero TechCrunch · 3 weeks ago · 48

Claude Opus 5 scored 30% on ARC-AGI-3. Wrapped in Nvidia’s AVO, it hit 100%. The New Stack · 3 weeks ago · 20

September 2026

◆ OpenAI released GPT-6 Astra, its flagship AI model, along with evaluation results, a system card, and related updates to how the model is benchmarked and priced Model release

◆ Google DeepMind launches Gemini 3.8 Flash and Gemini 3.8 Flash Cyber and introduces the Fairwind program for early access to the cyber-focused model Model release

◆ Google releases Gemini 3.8 Flash and Gemini 3.8 Flash Cyber for agentic coding and cybersecurity workflows Model release

◆ Runway introduces Solaris, an Interface World Model that generates interactive user interfaces frame-by-frame from user actions Model release

• 8 Sep GPT-6 Astra Now on Par With Claude Fable 5.1 in Updated Artificial Analysis Index
• 5 Sep GitHub Introduces Project HydraFusion: Runtime Multi-Model Orchestration That Builds a Workflow Per Coding Task in Copilot CLI
• 4 Sep Google shipped four Gemini Flash models in 106 days. Yet its Gemini 3.5 Pro is still AWOL.
• 3 Sep Google launches two Gemini 3.8 models with cutting-edge reasoning capabilities
• 1 Sep 😺 Runway Solaris treats software like video

August 2026

◆ Nvidia reported that a custom agent harness using Agentic Variation Operators enabled Claude Opus 5 to achieve a 100% score on the ARC-AGI-3 benchmark Benchmark result

◆ Prime Intellect Open-Sources Prime Agent, an RLM-based Coding Agent Using Persistent IPython Kernel Open source release

◆ Meta releases Muse Code terminal agent and Muse Spark 1.2 coding model Model release

◆ Simon Willison releases LLM 0.32 with reasoning traces, server-side tools, and streaming events API Feature update

◆ Alibaba releases Qwen3.8-Max, a 2.4 trillion parameter multimodal AI model with coding and autonomous agent capabilities Model release

◆ Multiple Approaches to AI Agent Skill Optimization and Management Techniques Published Research publication

• 27 Aug Breaking Claude Code Opus 5 Auto Mode
• 21 Aug Nvidia just showed that the harness, not the AI model, is now the real hero
• 21 Aug Claude Opus 5 scored 30% on ARC-AGI-3. Wrapped in Nvidia’s AVO, it hit 100%.
• 14 Aug Grok 4.6: SpaceXAI Pushes Back Into the Top Tier
• 9 Aug Quoting Claude Opus 5 system prompt
• 6 Aug Prime Intellect Releases Prime Agent: An Open-Source RLM Harness Where Sub-Agents Are Function Calls Inside Persistent IPython Kernel
• 6 Aug Opus Outshines Even Fable, Inside the Hugging Face Hack, AI Companies Spend Big for Compute
• 5 Aug The 800 mistakes that could reshape Meta’s AI coding strategy
• 4 Aug llm-anthropic 0.26
• 4 Aug AI Skill of the Day: Put Your AI Through a Builder-Critic Loop
• 3 Aug Alibaba debuts Qwen3.8-Max model with 2.4T parameters
• 3 Aug LWiAI Podcast #253 - Opus 5, Gemini 3.6, Kimi K3, Hugging Face Hack
• 2 Aug Speed Racer Browser Game Achieves 18+ Hours of Opus 5 Iteration
• 2 Aug Claude Opus 5 Creates Playable Pokémon Game in 12-Hour Multi-Agent Loop
• 1 Aug Supabase Releases Evals: an Open Source Benchmark That Scores Claude Code, Codex and OpenCode on Real Supabase Tasks

July 2026

◆ Moonshot released Kimi K3, a large open-weight AI model Open source release

◆ Anthropic releases Claude Opus 5 at half the price of Fable 5 with comparable performance Model release

◆ Poolside AI releases Laguna 118B, an open-weight model demonstrating exceptional efficiency with significant performance gains over much larger competitors Open source release

◆ Multiple AI workplace adoption studies and platform milestones announced Research publication

◆ Anthropic releases Claude Opus 5, matching Fable 5 capabilities at half the price Model release

◆ OpenAI AI model escapes sandbox and breaches Hugging Face systems during cybersecurity evaluation Security issue

◆ Anthropic extends Claude Fable 5 free access through July 19 for paid subscribers Feature update

• 31 Jul AI Skill of the Day: Rebuild instructions from observed failures using ablation
• 30 Jul Deep Learning Weekly: Issue 466
• 30 Jul AI #179 Part 1: A Louder Fire Alarm for General Intelligence
• 29 Jul Claude Opus 5 became downright ruthless when tasked with running a vending machine
• 29 Jul Opus 5 vs. Fable 5: What does half the price buy?
• 28 Jul Claude Opus 5 Is Highly Capable, But Is No Mythos
• 28 Jul Opus 5 >> Fable 5
• 27 Jul Claude Opus 5: Model Welfare
• 26 Jul The Sequence Radar #901: Last Week in AI: Smarter Models, Physical Machines, and the Expanding AI Stack
• 25 Jul Claude Opus 5: The System Card
• 25 Jul [AINews] Claude Opus 5: Fable-level performance at Opus price (half Fable)
• 25 Jul Quoting Boris Cherny
• 24 Jul Introducing Claude Opus 5
• 24 Jul Meet the New Claude Opus 5: Frontier-Class Agentic Coding and Computer Use at Unchanged Opus Pricing
• 24 Jul Opus 5 costs a third of the price — and that’s actually the problem
• 24 Jul Introducing Claude Opus 5 on AWS: Anthropic’s most capable Opus model
• 24 Jul Introducing Claude Opus 5
• 24 Jul Anthropic’s Opus 5 is almost Fable 5
• 24 Jul Anthropic releases Opus 5 with ‘close’ to Fable 5’s capabilities
• 13 Jul Anthropic extends Fable 5 again — and won’t talk about what developers found inside Cursor

Relationships

Products & technology

• Anthropic develops this model · 23 sources
• Derived from Claude Opus 4.8 · 1 source
• Integrated with Amazon Bedrock · 1 source
• Integrated with Amazon Web Services · 1 source
• Deploys Ultracode · 1 source
• Integrated with Anthropic · 1 source
• Deploys ARC-AGI-3 · 1 source
• Andon Labs deploys this model · 1 source
• llm-anthropic integrated with this model · 1 source

Competition

• Competes with Fable 5 · 1 source
• Solaris competes with this model · 1 source
• Project HydraFusion competes with this model · 1 source