Claude 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.
Added Feb 17, 2026
Context Window
1.0M
Max Output
128.0K
Avg output tokens (7d)
2.2K 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
47.2
Coding Index
63.0
Agentic Index
42.1
Reasoning
GPQA Diamond
Graduate-level scientific reasoning
87.5%
Better than 92% of models compared
HLE
Humanity's Last Exam
30.0%
Better than 93% of models compared
IFBench
Instruction-following benchmark
56.6%
Better than 69% of models compared
T²-Bench Telecom
Conversational AI agents in dual-control scenarios
75.7%
Better than 68% of models compared
AA-LCR
Long context reasoning evaluation
70.7%
Better than 95% of models compared
GDPval-AA
Economically valuable tasks
43.7%
CritPt
Research-level physics reasoning
3.1%
Coding
SciCode
Python programming for scientific computing
46.8%
Better than 91% of models compared
Terminal-Bench Hard
Agentic coding and terminal use
53.0%
Better than 98% of models compared
Knowledge
AA-Omniscience Accuracy
Proportion of correctly answered questions
40.9%
AA-Omniscience Hallucination Rate
Rate of incorrect answers among non-correct responses
48.4%
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 Thinking 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
anthropic/claude-sonnet-4.6Claude 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.
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.