claude-sonnet-4-5-20250929
Common Name: Claude Sonnet 4.5 (20250929)
Anthropic
Released on Sep 29 12:00 AMKnowledge Cutoff Jul 31 12:00 AMSupportedTool InvocationSupportedReasoningSnapshot of Claude Sonnet 4.5 from September 29, 2025. Most intelligent model with exceptional coding and reasoning.
Specifications
Context
200K
Maximum Output
64K
Inputtext, image, pdf
Outputtext
Performance (7-day Average)
Collecting…
Collecting…
Collecting…
Pricing
Input$3.30/MTokens
Output$16.50/MTokens
Batch Input$1.65/MTokens
Batch Output$8.25/MTokens
Cache Creation$4.13/MTokens
Cached Input$0.33/MTokens
Availability Trend (24h)
Performance Metrics (24h)
Similar Models
$3.30/$16.50/M
ctx200Kmax64Kavail—tps—
Anthropic's most intelligent model yet. Excels at coding, analysis, and complex reasoning with state-of-the-art performance.
$3.30/$16.50/M
ctx200Kmax64Kavail—tps—
InOutCap
High-performance model balancing intelligence and speed. Excellent for complex tasks requiring nuanced understanding.
$3.30/$16.50/M
ctx200Kmax64Kavail—tps—
InOutCap
Snapshot of Claude Sonnet 4 from May 14, 2025. High-performance model for complex tasks.
$3.30/$16.50/M
ctx200Kmax4Kavail—tps—
InOutCap
Enhanced version of Claude 3.5 Sonnet with extended thinking capabilities for complex reasoning tasks.