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Leaderboard / Anthropic

Claude Opus 4.6

Anthropic CLOSED Proprietary
Other settings:High · 91
Verdict

Claude Opus 4.6 is a top-tier model: #13 of 406 by SIscope score. Strong at everything it's been tested on, especially reasoning & knowledge. On the pricey side: costs more than 94% of priced models.

SIscope score
92
#13 of 406
Human-vote rank
#10
of 419 · score 1496
Price per 1M tokens, blended
$10
$5 in · $25 out
Context window
1M
1,000,000 tokens

Shape

Each spoke is a category, 0 at the centre, 100 at the edge.

CodingAgentsno data yetReasoningMathChatInstructions

Category scores

Percentiles: 90 means better than about 90% of tested models.

Coding85
Agents & toolsNo data yet–
Reasoning & knowledge98
Math98
Chat quality98
Following instructions98

What goes into each category · Compare with DeepSeek V4.1 Flash

Human-vote score over time

Text arena, recent updates.

149014981505Oct 15: 1497.5 (rank #9)Oct 20: 1497 (rank #9)Oct 22: 1496.8 (rank #9)Oct 28: 1496.2 (rank #10)Oct 15Oct 28

Coding votes over time

WebDev arena, recent updates.

153015381545Oct 16: 1537.5 (rank #46)Oct 18: 1537.5 (rank #47)Oct 19: 1537.4 (rank #49)Oct 22: 1537.3 (rank #49)Oct 23: 1537.2 (rank #50)Oct 27: 1537 (rank #51)Oct 28: 1537 (rank #52)Oct 16Oct 28

Independent test runs

Run by Epoch AI on the same harness for every model. Bars show the share of questions answered correctly.

SWE-bench Verified79%
Fixing real GitHub issues in Python repositories
Better than 91% of 35 tested models. Run Feb 18, 2026.

Human-vote arenas

People compare two anonymous answers and pick the better one. Scores work like chess ratings.

ArenaRankScoreRange (95%)VotesUpdated
Text arena
Everyday chat, blind human votes
#10 of 41914961493–149989,324Oct 28, 2026
WebDev arena
Building web apps, blind human votes
#52 of 15215371532–154220,576Oct 28, 2026
Vision arena
Questions about images, blind human votes
#11 of 16713121306–131926,841Oct 19, 2026
Agent arena
Real multi-step agent sessions
Not on this board yet

Source: Arena (formerly LMArena) leaderboard dataset, CC BY 4.0. Fetched Nov 4, 2026.

Price

Input
$5
per 1M tokens
Output
$25
per 1M tokens
Blended
$10
3 in : 1 out, per 1M
Context window
1M
max tokens per request
Speed
Coming soon
our own tests

List price from the OpenRouter models API (anthropic/claude-opus-4.6), Nov 4, 2026. Providers can charge differently.