Back to Models
Anthropic

Claude Opus 4.8

AnthropicDocumentation
claude-opus-4-8

Previous-generation Opus model. ~4x more reliable code review, top Super-Agent benchmark (only model to complete every case end-to-end), and 84% on Online-Mind2Web computer use. Features 1M token context window, 128K output capacity, adaptive thinking with effort control, and priority service tier. Anthropic recommends Claude Opus 5 for new work.

Context Window
1000K
tokens
Max Output
128,000
tokens
Extended Thinking
Supported
Web Search
Available
MCP Support
Available
Structured Output
Available

Supported File Formats

Images

WEBP(5 MB)PNG(5 MB)JPEG(5 MB)GIF(5 MB)

Documents

pdftextdocxlsrtfdocxxlsxpptxpptodtodpods