Claude Opus 4.5

Model ● Covered in 5 stories + Follow

Claude Opus 4.5 is Anthropic's frontier language model released in November 2025 that has demonstrated significant capabilities in coding and agentic tasks. The model powers Claude Code, a coding tool that can autonomously generate complex software systems, and has become a performance benchmark against which other AI systems are measured, with competitors like GLM-5.2 achieving parity approximately six months after its release.

Updated 7 August 2026

Specifications

No specifications recorded yet.

Latest developments

AI Harnesses Are the Software Shells That Turn AI Models Into Capable Agents Trending Topics · 3 weeks ago · 9

What 900,000 Lines of AI-Built Code Taught Me About Being Wrong Substack · 2 months ago · 6

GLM-5.2 is the step change for open agents Interconnects · 2 months ago · 55

Some ideas for what comes next, May 2026 Interconnects · 3 months ago · 16

Claude Code and What Comes Next One Useful Thing · 8 months ago · 6

Timeline

Month Quarter Year

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

Zhipu releases GLM-5.2 open-weight model achieving performance parity with frontier closed-source models Model release

Relationships

Products & technology

Anthropic develops this model · 1 source
Claude Code derived from this model · 1 source
AI harnesses integrated with this model · 1 source

Every AI story that matters,
in your inbox by 8am.

TLDRocket reads all relevant sources, removes duplicate coverage, and summarises the day in two minutes. Follow companies and topics for alerts, or get the briefing in Slack. Free, no spam, unsubscribe anytime.