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Leaderboard / Anthropic

Claude Sonnet 4.6

Anthropic CLOSED Proprietary
Verdict

Claude Sonnet 4.6 is a strong all-rounder: #39 of 406 by SIscope score. Strongest at following instructions, weaker at coding. On the pricey side: costs more than 86% of priced models.

SIscope score
81
#39 of 406
Human-vote rank
#42
of 419 · score 1458
Price per 1M tokens, blended
$6
$3 in · $15 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.

Coding72
Agents & toolsNo data yet–
Reasoning & knowledge93
Math86
Chat quality90
Following instructions94

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

Human-vote score over time

Text arena, recent updates.

145014581465Oct 20: 1457.7 (rank #41)Oct 22: 1457.8 (rank #41)Oct 28: 1457.7 (rank #42)Oct 20Oct 28

Coding votes over time

WebDev arena, recent updates.

151515231530Oct 16: 1522.7 (rank #49)Oct 18: 1523 (rank #51)Oct 19: 1523 (rank #53)Oct 22: 1522.8 (rank #53)Oct 23: 1522.7 (rank #54)Oct 27: 1522.8 (rank #55)Oct 28: 1522.7 (rank #56)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 Verified75%
Fixing real GitHub issues in Python repositories
Better than 59% of 35 tested models. Run Feb 21, 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
#42 of 41914581454–146170,916Oct 28, 2026
WebDev arena
Building web apps, blind human votes
#56 of 15215231518–152822,733Oct 28, 2026
Vision arena
Questions about images, blind human votes
#33 of 16712831277–128927,408Oct 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
$3
per 1M tokens
Output
$15
per 1M tokens
Blended
$6
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-sonnet-4.6), Nov 4, 2026. Providers can charge differently.