Back to all models
anthropic
anthropicAnthropic: Claude Sonnet 5.5
Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fixing bugs, and producing...
anthropic/claude-sonnet-5.5
Context Size
1,000K
Input Price
300,000 pts/M18,450 Ks/M
Output Price
1,500,000 pts/M92,250 Ks/M
Architecture
Text
Image
File
Supported Parameters
include_reasoningmax_tokensreasoningreasoning_effortresponse_formatstopstructured_outputstool_choicetoolsverbosity
Details
TokenizerClaude
Max Completion128,000 tokens
Provider Context1,000K tokens
ModeratedYes
CreatedSep 28, 2026