anthropicModerated

Claude Opus 4.6 (Fast)

anthropic/claude-opus-4.6-fast

Ratings & Rankings

Input Cost

$30.0000

2/100

Output Cost

$150.0000

2/100

Context Window

79/100

Overall

28/100

Key Specifications

Context Window1M

Max Output128K

TokenizerClaude

Input Modalitiestext, image, file

Output Modalitiestext

Pricing

Input (per M tokens)$30.0000per million tokens

Output (per M tokens)$150.0000per million tokens

Input & Output

You send

textimagefile

You get

text

Capabilities

✓Function calling

✓Structured outputs

✗Unmoderated

About

Fast-mode variant of [Opus 4.6](/anthropic/claude-opus-4.6) - identical capabilities with higher output speed at premium 6x pricing. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode

Supported parameters

include_reasoningmax_tokensreasoningresponse_formatstopstructured_outputstemperaturetool_choicetoolstop_pverbosity