Anthropic

Claude Sonnet 5

Claude Sonnet 5 is Anthropic's flagship Sonnet — a 1M-token context window with adaptive thinking and selectable reasoning effort (low/medium/high/max/x-high). Released 2026-06-30.

claude-sonnet-5

Pricing

~94%

Input: $0.114636 / 1,000,000 tokens
Output: $0.57318 / 1,000,000 tokens
Cache read: $0.011464 / 1,000,000 tokens
Cache write: $0.143295 / 1,000,000 tokens

How pricing works

Discount history

94.3%Nov 8, 03:56 AM UTC

Nov 7, 11:57 PMNov 8, 03:56 AM UTC

Model details

Input: text
Output: text
Context window: 1,000,000 tokens
Maximum output: 64,000 tokens
Availability: $2.7KUncapped capacity
Updated: 11/8/2026, 3:58:06 AM UTC

Capacity is reserved when your request is accepted.

Capabilities

ChatStreamingTool callingVisionReasoning

Supported parameters

include_reasoningmax_tokensreasoningreasoning_effortresponse_formatstopstructured_outputstemperaturetool_choicetoolstop_ktop_pverbosity