Skip to contentAnthropic · Claude Sonnet 4 Claude Sonnet 4.6
CurrentStale ·
The best combination of speed and intelligence in the current Claude lineup, with a 1M-token context window and both extended and adaptive thinking.
profile normalized against the 47-model field
Context window· 1M of 1.05M95%
Max output· 64K of 272K24%
Affordability· $15.00 / Mtok out92%
Capability breadth· 2 of 1118%
Capability switches · 2 of 11
Reasoning mode
Tool / function use
Streaming
JSON mode
Structured outputs
Prompt caching
Fine-tuning
Web search
Code execution
Vision input
Audio input
Specifications
Every value carries a primary source and a verification date.
Pricing
Input $/Mtok$3 / Mtok input USD/Mtok
Cached input $/Mtok$3.75 / MTok (5m cache write) USD_per_MTok
Output $/Mtok$15 / Mtok output USD/Mtok
Capabilities
Input modalitiestext, image
Output modalities["text"]
Vision inputVision supported
API
API model IDclaude-sonnet-4-6
General
Knowledge cutoffAugust 2025
Benchmarks
Sourced evaluation scores, each verified against its primary source.
SWE-bench Verified
Claude Sonnet 4.6: 0.796 (79.6%)
GPQA Diamond
Claude Sonnet 4.6: 0.899
Humanity's Last Exam (with tools)
Claude Sonnet 4.6: 0.490 (49.0%)