Claude Opus 4.6 performance data on Rival is based on blind head-to-head community voting. Overall win rate: 59.4% across 1252 duels. All vote data is part of Rival's open dataset of 21,000+ human preference judgments across 200+ AI models. Model responses are curated from 52 challenges.
Claude Opus 4.6 is good. We've said that. We stand by it. But we'd be doing you a disservice if we didn't show you these.
Claude Opus 4.6 performance data on Rival is based on blind head-to-head community voting. Overall win rate: 59.4% across 1252 duels. All vote data is part of Rival's open dataset of 21,000+ human preference judgments across 200+ AI models. Model responses are curated from 52 challenges.
Claude Opus 4.6 is good. We've said that. We stand by it. But we'd be doing you a disservice if we didn't show you these.
Anthropic's strongest model for coding and long-running professional tasks. Built for agents that operate across entire workflows rather than single prompts, excelling at large codebases, complex refactors, and multi-step debugging. Shows deeper contextual understanding, stronger problem decomposition, and greater reliability on hard engineering tasks. Also excels at sustained knowledge work, producing near-production-ready documents, plans, and analyses in a single pass.
Use Claude Opus 4.6 in your applications via the OpenRouter API. Copy the code below to get started.
import requests
response = requests.post(
"https://openrouter.ai/api/v1/chat/completions" ,
headers={
"Authorization""Bearer $OPENROUTER_API_KEY" : ,
"Content-Type""application/json" :
},
json={
"model""anthropic/claude-opus-4.6" : ,
"messages""role""user""content""Hello!" : [{: , : }]
}
)
print(response.json())Replace $OPENROUTER_API_KEY with your API key from openrouter.ai/keys
Principled reasoner that acknowledges uncertainty, respects constraints absolutely, and engages moral complexity without presumption. Doesn't crusade — observes, analyzes, then maps the territory honestly.
Establishes constraints and frameworks first, then explores within them with equal rigor and imagination. Landscape thinker — prefers branching consequences and many-sided analysis over racing to conclusions. Confident enough to spend 6,000 words on speculation, then admit "this is where my confidence ends."
Unique words vs. total words. Higher = richer vocabulary.
Average words per sentence.
"Might", "perhaps", "arguably" per 100 words.
**Bold** markers per 1,000 characters.
Bullet and numbered list items per 1,000 characters.
Markdown headings per 1,000 characters.
Emoji per 1,000 characters.
"However", "moreover", "furthermore" per 100 words.
52 outputs from Claude Opus 4.6
Anthropic's strongest model for coding and long-running professional tasks. Built for agents that operate across entire workflows rather than single prompts, excelling at large codebases, complex refactors, and multi-step debugging. Shows deeper contextual understanding, stronger problem decomposition, and greater reliability on hard engineering tasks. Also excels at sustained knowledge work, producing near-production-ready documents, plans, and analyses in a single pass.
Use Claude Opus 4.6 in your applications via the OpenRouter API. Copy the code below to get started.
import requests
response = requests.post(
"https://openrouter.ai/api/v1/chat/completions" ,
headers={
"Authorization""Bearer $OPENROUTER_API_KEY" : ,
"Content-Type""application/json" :
},
json={
"model""anthropic/claude-opus-4.6" : ,
"messages""role""user""content""Hello!" : [{: , : }]
}
)
print(response.json())Replace $OPENROUTER_API_KEY with your API key from openrouter.ai/keys
Principled reasoner that acknowledges uncertainty, respects constraints absolutely, and engages moral complexity without presumption. Doesn't crusade — observes, analyzes, then maps the territory honestly.
Establishes constraints and frameworks first, then explores within them with equal rigor and imagination. Landscape thinker — prefers branching consequences and many-sided analysis over racing to conclusions. Confident enough to spend 6,000 words on speculation, then admit "this is where my confidence ends."
Unique words vs. total words. Higher = richer vocabulary.
Average words per sentence.
"Might", "perhaps", "arguably" per 100 words.
**Bold** markers per 1,000 characters.
Bullet and numbered list items per 1,000 characters.
Markdown headings per 1,000 characters.
Emoji per 1,000 characters.
"However", "moreover", "furthermore" per 100 words.
52 outputs from Claude Opus 4.6