Claude Sonnet 4.6

proprietary

The best combination of speed and intelligence

Intelligence
Reasoning
Speed
Context
1M
Max output
128K
Input price
$3/1M tokens
Output price
$15/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode
Infrastructure
Streaming
Batch Processing

Details

Model IDclaude-sonnet-4-6
Provider Anthropic
Creator anthropic
Familyclaude-sonnet
Licenseproprietary
Statusactive
Typechat
Input modalitiestext, image
Output modalitiestext
Open weightNo
Parameters—
Architecture—
Context window1M tokens
Max input—
Max output128K tokens
Max output (batch)300K tokens
Reasoning tokens—
Thinking modesAdaptive
Knowledge cutoff
Training data cutoff
Release date
Retirement date
Priority tierYes
AWS Bedrock IDanthropic.claude-sonnet-4-6
GCP Vertex IDclaude-sonnet-4-6
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs
Computer Usecomputer_use
Control a virtual desktop
MCPmcp
Connect to Model Context Protocol servers

Endpoints

MessagesPOST
Create messages with multi-turn conversationshttps://api.anthropic.com/v1/messages

Pricing

Input
$3
Output
$15
Cache write (5m)
$3.75
Cache write (1h)
$6
Cache read
$0.3
Batch in
$1.5
Batch out
$7.5

Family Comparison: claude-sonnet

ModelContextMax outPricing
Claude Sonnet 5.51M128K$2$10
Claude Sonnet 51M128K$2$10
Claude Sonnet 3.7——$3$15
Claude Sonnet 4200K64K$3$15
Claude Sonnet 4.5200K64K$3$15
Claude Sonnet 4.61M128K$3$15

API

GET/v1/models/anthropic/claude-sonnet-4-6

Claude Sonnet 4.6

claude-sonnet-4-6

The best combination of speed and intelligence

Changes · 11 entries
claude-sonnet-4-6updateca7a400Nov 2, 2026, 03:02 AM
max_output_tokens64000→128000
thinking_modes["extended","adaptive"]→["adaptive"]
release_date2026-02-17
claude-sonnet-4-6update70e2981Sep 24, 2026, 11:29 AM
max_output_tokens64000→128000
tools["function_calling"]→["function_calling","computer_use","mcp"]
thinking_modes["extended","adaptive"]→["adaptive"]
release_date2026-02-17
claude-sonnet-4-6update88d97e5Jun 30, 2026, 04:49 AM
tools["function_calling","computer_use","mcp"]→["function_calling"]
claude-sonnet-4-6updateeab58fcApr 17, 2026, 02:18 AM
pricingcache write 1h$6
extended_thinkingyes
adaptive_thinkingyes
thinking_modes["extended","adaptive"]
bedrock_idanthropic.claude-sonnet-4-6
vertex_idclaude-sonnet-4-6
retirement_date2027-02-17
batch_max_output_tokens300000
claude-sonnet-4-6updatef43e286Mar 24, 2026, 04:45 AM
capabilitiesstructured outputyesjson modeyesbatchyes
claude-sonnet-4-6update2b100acMar 23, 2026, 05:30 AM
licenseproprietary
open_weightno
page_urlhttps://docs.anthropic.com/en/docs/about-claude/models#cl...
claude-sonnet-4-6update7a4f1f6Mar 22, 2026, 05:43 AM
performance4
reasoning4
extended_thinkingyes
training_data_cutoff2026-01
adaptive_thinkingyes
priority_tieryes
model_typechat
claude-sonnet-4-6updateb50649fMar 21, 2026, 11:58 PM
taglineThe best combination of speed and intelligence
tools["function_calling","computer_use","mcp"]
endpoints["messages"]
claude-sonnet-4-6update2801e21Mar 21, 2026, 07:41 PM
pricingcache write$3.75
claude-sonnet-4-6updatec9a70c5Mar 21, 2026, 08:12 AM
knowledge_cutoffAug 2025→2025-08
claude-sonnet-4-6create7f5c66fMar 21, 2026, 05:16 AM