← All modelsKey Specifications
Context Window200K
Max Output64K
TokenizerClaude
Input Modalitiesfile, image, text
Output Modalitiestext
Pricing
Input (per M tokens)$5.0000per million tokens
Output (per M tokens)$25.0000per million tokens
Capabilities
✓Function calling
✓Structured outputs
✗Unmoderated
About
Claude Opus 4.5 is Anthropicâs frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding and...
Supported parameters
include_reasoningmax_tokensreasoningresponse_formatstopstructured_outputstemperaturetool_choicetoolstop_kverbosity