Claude Sonnet 4.6on Krater.ai
The latest iteration of Claude Sonnet, pushing the boundary of what mid-tier models can achieve. Claude Sonnet 4.6 matches previous Opus-level performance at Sonnet pricing.
Released February 17, 2026
Specifications
Claude Sonnet 4.6 at a glance
Context
1M tokens
Max output
128K tokens
Input
Text, Image, File
Output
Text
Input price
$3.00 / 1M
Output price
$15.00 / 1M
Krater rank
#2
Capabilities
What it is good at
Catalog capabilities
- Accepts image input
- Generates text responses
- Supports tool calling
- Supports structured outputs
- Opus-level quality at Sonnet speed
- State-of-the-art instruction following
Good for
Benchmarks
Catalog data, not Krater benchmarks.
Coding index score
63
Agentic index score
42.1
Intelligence index score
48.4
Design Arena mobileapps rank
#4
Design Arena godotgamedev rank
#7
Compare
Compare Claude Sonnet 4.6
Claude Sonnet 4.6 vs Claude Sonnet 4.5
Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows.
Open comparisonClaude Sonnet 4.6 vs Claude Sonnet 4
Claude Sonnet 4 significantly enhances the capabilities of its predecessor, Sonnet 3.7, excelling in both coding and reasoning tasks with improved precision and controllability.
Open comparisonClaude Sonnet 4.6 vs Claude Haiku 4.5
Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models.
Open comparisonFAQ
Questions about Claude Sonnet 4.6
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