Models
Opus
Anthropic's most capable Claude model, used for complex coding and architecture tasks.
Also written as claude opus, opus 4
- Messages
- 2,336
- Members using it
- 176
- First seen
- Nov 17, 2025
What it means
The flagship model in Anthropic's Claude family, favored for difficult reasoning, large codebases, and system design. Members use it for defining project structure, solving hard bugs, and tasks where cheaper models fail. Opus 4 brought major improvements that members immediately noticed.
How it's used here
The model members reach for when quality matters more than cost. Frequently discussed when comparing performance across providers, debugging agent failures with specific model versions, or architecting new systems.
Seen in the wild
“Opus 4.8 solved too VERY big problems I had with a 27B docker I'm working on with some guys in the RTX6k groups, it is another leap forward.”
“I just see a huge efficiency optimization, if the Opus model defined not just the project, but the coding structure, database, security etc.”
“Anyone getting Agent failed before reply: Unknown model: anthropic/claude-opus-4-6. Logs: openclaw logs --follow when using 4-6 on openclaw?”