Claude Opus 4Archive and alternatives
Claude Opus 4 is no longer available on OpenRouter. Explore a current alternative below.
Released May 22, 2025
Specifications
Claude Opus 4 at a glance
Context
200K tokens
Max output
32K tokens
Input
Image, Text, File
Output
Text
Input price
$15.00 / 1M
Output price
$75.00 / 1M
Knowledge cutoff
2025-01-31
Capabilities
What it is good at
Catalog capabilities
- Accepts image input
- Generates text responses
- Supports tool calling
Good for
Benchmarks
Catalog data, not Krater benchmarks.
Design Arena svg rank
#50
Design Arena gamedev rank
#55
Compare
Compare Claude Opus 4
Claude Opus 4 vs Claude Fable 5
Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding.
Open comparisonClaude Opus 4 vs Claude Fable 5.1
Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual
Open comparisonClaude Opus 4 vs Claude Fable 5.1 (batch)
Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual
Open comparisonFAQ
Questions about Claude Opus 4
Clear answers based on the model catalog and Krater access.