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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
#33
Coding Index
#33
GPQA
#65
HLE
#59
IFBench
#139
Time to First Token
#70
SciCode
#59
LCR
#52
TerminalBench Hard
#10
TAU2
#135
Output TPS
#311

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 51.0M$2.00$10.00Deprecating
Claude Sonnet 4.61.0M$3.00$15.00Deprecating
Claude Sonnet 4.51.0M$3.00$15.00Deprecating
Claude Sonnet 41.0M$3.00$15.00Deprecated
Claude Sonnet 4.6 Adaptive————Current
Claude Sonnet 4.5————Available
Claude Sonnet 4.6 Non-Reasoning Low Effort————Available
Claude Sonnet 4————Available
Claude Sonnet 4.1—200K$3.00$15.00Available
Claude Sonnet 3.7200K——Available
Claude Sonnet 3.7200K$3.00$15.00Deprecated

Other Models

ModelTierReleasedContextInput / 1MOutput / 1M
Claude Fable 5.1—1.0M$10.00$50.00
Claude Opus 5Opus1.0M$5.00$25.00
Claude Fable 5Fable1.0M$10.00$50.00
Claude Fable 5.3Fable————
Claude Mythos 5Mythos—1.0M$10.00$50.00
Claude Mythos 5.1Mythos——$10.00$50.00
Claude Opus 4.8Opus1.0M$5.00$25.00
Claude Opus 4.7Opus1.0M$5.00$25.00
Claude Opus 4.6Opus1.0M$5.00$25.00
Claude Opus 4.5Opus410K$5.00$25.00

Model IDs

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