Claude Sonnet 4.5

claude-sonnet-4-5-20250929
alias → claude-sonnet-4-5
Speed
Context
1M
Max output
64K
Input price
$3
/1M tokens
Output price
$15
/1M tokens
Capabilities
vision
tool call
structured output
reasoning
json mode
streaming
fine tuning
batch
Details
Provider Anthropic
Creator Anthropic
Familyclaude-sonnet
Statusactive
Input modalitiestext, image
Output modalitiestext
Knowledge cutoff2025-01
Release date—
Deprecation date—
Sourceofficial
Last updated2026-03-20
Max input—
Pricing per 1M tokens
Input
$3
Output
$15
Cached
$0.3
Batch in
$1.5
Batch out
$7.5
claude-sonnet family
ModelContextMax outInputOutput
Claude Sonnet 3.7VTS
——$3$15
Claude Sonnet 4RVTS
1M64K$3$15
Claude Sonnet 4.5RVTS
1M64K$3$15
Claude Sonnet 4.6RVTS
1M64K$3$15
API
GET/v1/models/anthropic/claude-sonnet-4-5-20250929