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Claude Sonnet 4.6 Adaptive

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Claude Sonnet 4.6 Adaptive is an AI model from Anthropic. Claude Sonnet 4.6 with adaptive reasoning at maximum effort, scaling thinking depth dynamically for complex tasks.
Specifications
Canonical IDanthropic-claude-4-6-sonnet-adaptive
StatusActive
CreatorAnthropicAnthropic
Benchmarks
Intelligence Index
#11
Coding Index
#36
GPQA
#68
HLE
#78
IFBench
#139
Time to First Token
#86
SciCode
#85
LCR
#105
TerminalBench Hard
#10
TAU2
#134
Output TPS
#331

Capabilities

Input0/5
Text·
Image·
Audio·
Video·
PDF·
Output0/5
Text·
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Claude Sonnet 5.51.0M$2.00$10.00Available
Claude Sonnet 5.5 Batch1.0M$1.00$5.00Available
Claude Sonnet 51.0M$2.00$10.00Deprecating
Claude Sonnet 51.0M$1.00$5.00Available
Claude Sonnet 5.5 US Gov—1.0M$2.40$12.00Available
Claude Sonnet 4.61.0M$3.00$15.00Deprecating
Claude Sonnet 4.61.0M$1.50$7.50Available
Claude Sonnet 4.51.0M$3.00$15.00Deprecated
Claude Sonnet 4.51.0M$1.50$7.50Available
Claude Sonnet 41.0M$3.00$15.00Deprecated
Claude Sonnet 4.6 Adaptive————Current

Other Models

ModelTierReleasedContextInput / 1MOutput / 1M
Claude Haiku 5.5Haiku1.0M$0.100$0.500
Claude Haiku 5.5 BatchHaiku1.0M$0.050$0.250
Claude Opus 5.5Opus1.0M$4.00$20.00
Claude Opus 5.5Opus1.0M$2.00$10.00
Claude Fable 5.1—1.0M$10.00$50.00
Claude Fable 5.1Fable1.0M$5.00$25.00
Claude Opus 5Opus1.0M$5.00$25.00
Claude Opus 5Opus1.0M$2.50$12.50
Claude Fable 5Fable1.0M$5.00$25.00
Claude Fable 5Fable1.0M$10.00$50.00

Model IDs

anthropic-claude-4-6-sonnet-adaptive
claude-sonnet-4-6-adaptive