Claude Sonnet 4.6 is Anthropic's most capable Sonnet yet — a full upgrade across coding, computer use, long-context reasoning, agent planning, and design. Supports up to a 1M-token context window at Sonnet pricing.
Added Feb 17, 2026
Context Window
1.0M
Max Output
128.0K
Avg output tokens (7d)
897 tokens
Input Price (Auto)
$3.00/1M
Output Price (Auto)
$15.00/1M
Cache Read (Auto)
$0.30/1M
Capabilities
Benchmarks
Benchmarks
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
35.9
Reasoning
GPQA Diamond
Graduate-level scientific reasoning
79.9%
Better than 76% of models compared
HLE
Humanity's Last Exam
13.2%
Better than 74% of models compared
IFBench
Instruction-following benchmark
41.2%
Better than 42% of models compared
T²-Bench Telecom
Conversational AI agents in dual-control scenarios
79.5%
Better than 70% of models compared
AA-LCR
Long context reasoning evaluation
57.7%
Better than 72% of models compared
Coding
SciCode
Python programming for scientific computing
46.9%
Better than 92% of models compared
Terminal-Bench Hard
Agentic coding and terminal use
46.2%
Better than 94% of models compared
Last updated Jun 28, 2026
Artificial AnalysisProviders
Auto routing is available for this model. Explicit provider selection is not available.
Loading provider options…
Related text models
Compare Claude Sonnet 4.6 with similar models from the same provider or model family.
Claude Sonnet 5
anthropic/claude-sonnet-5Claude Sonnet 5 via Anthropic's native API.
Claude Sonnet 5 Thinking
anthropic/claude-sonnet-5:thinkingClaude Sonnet 5 with adaptive thinking enabled for complex coding, planning, and agentic work.
Claude Sonnet Latest
anthropic/claude-sonnet-latestCompatibility alias that routes to the newest version of Claude Sonnet. Currently routes to Claude Sonnet 5 Thinking.
Claude Sonnet 4.6 Thinking
anthropic/claude-sonnet-4.6:thinkingClaude Sonnet 4.6 with extended thinking enabled for tougher coding, planning, and multi‑tool tasks. Ideal for long‑horizon agent workflows and complex problem solving.
Claude Opus 5
anthropic/claude-opus-5Claude Opus 5 is Anthropic's flagship model for advanced coding, long-running agentic tasks, research, and complex knowledge work.
Claude Fable 5
anthropic/claude-fable-5Anthropic Claude Fable 5.