Claude Haiku 4.5 Thinking API

anthropic/claude-haiku-4.5-thinking
by Anthropicrelease date: 10/15/2025

Claude Haiku 4.5 Thinking is Anthropic's fastest and most cost-effective model, offering frontier-level coding and reasoning at 1/3 the cost and double the speed.

$0.5/$2.5per 1M tokens
API documentation not available

Technical Specs

Context Length200,000
Release Date10/15/2025
Input Formats
textimage
Output Formats
text

Capabilities & Features

Capabilities
text generationcode generationcode editingmulti turn dialogueimage understandingextended reasoningtool use (computer use/bash/search)batch processingprompt caching
Supported File Types
.jpg.png