Earlier Sonnet-tier model in the Claude 4 line, now legacy. Uses a 200k-token context window with extended thinking and vision at the standard Sonnet price of $3/$15 per million tokens.
profile normalized against the 47-model field
Context window· 200K of 1.05M19%
Max output· 64K of 272K24%
Output speed—
Affordability—
Capability breadth· 4 of 1136%
Capability switches · 4 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.
Capacity
Context window
200K
Max output
64K
Capabilities
Input modalities
Text, image
Output modalities
Text
Reasoning mode
Extended thinking: Yes
Tool / function use
Yes
Prompt caching
Yes
Vision input
Yes
API
API model ID
claude-sonnet-4-4
Batch API
Yes
General
Knowledge cutoff
April 2025
Benchmarks
Sourced evaluation scores, each verified against its primary source.
GPQA Diamond
Claude Sonnet 4.4 reaches GPQA Diamond: 77.9%.
77.9 %Verified
SWE-bench Verified
On SWE-bench Verified, Claude Sonnet 4.4 scores 69.5%.