Claude Opus 4.8

Anthropic· released 27 May 2026

anthropic/claude-opus-4.8

Input / 1M tokens: $5
Output / 1M tokens: $25

Context window1M tokens

Longest answer: 128K tokens

reads textreads imagereads filetool callingvisionreasoning

About

Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token...

Details

Lab: Anthropicopenrouter.ai · 3 Oct 2026
Context: 1,000Kopenrouter.ai · 3 Oct 2026
Input price: $5 / 1Mopenrouter.ai · 3 Oct 2026
Output price: $25 / 1Mopenrouter.ai · 3 Oct 2026
Max output: 128,000 tokensopenrouter.ai · 3 Oct 2026
Inputs: text, image, fileopenrouter.ai · 3 Oct 2026
Open weights: Noopenrouter.ai · 3 Oct 2026

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Sources

openrouter.ai/anthropic/claude-opus-4.8· checked 3 Oct 2026