Claude 4.5 Haiku

Name: Claude 4.5 Haiku
Author: Anthropic

AnthropicProprietaryPending Human Review

Claude 4.5 Haiku is the fastest and most cost-efficient model in the Claude 4.5 family, designed to deliver near-frontier intelligence with low latency. It is optimized for high-volume tasks, real-time responses, and sub-agent orchestration. Despite its smaller size, it supports advanced features like 'extended thinking' and computer use, making it suitable for parallelized workflows where speed is critical. It is positioned as a drop-in replacement for previous mid-tier models with significantly better economics.

2025-10-15

Unreleased

Decoder-only Transformer

Proprietary

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Specifications

Parameters: Unreleased
Architecture: Decoder-only Transformer
License: Proprietary
Context Window: 200,000 tokens
Max Output: 64,000 tokens
Training Data Cutoff: Jul 2025
Type: multimodal
Modalities: textimage

Benchmark Scores

Advanced Specifications

Model Family: Claude
Finetuned From: Claude 4
API Access: Available
Chat Interface: Available
Multilingual Support: Yes
Variants: claude-haiku-4-5-20251001

Capabilities & Limitations

Capabilities: fast reasoningsub-agent orchestrationcodecomputer usevisionmultilingual
Known Limitations: less capable in deep theoretical reasoning compared to Opusknowledge cutoff limits real-time data without tools
Notable Use Cases: real-time customer supporthigh-volume data extractionparallel sub-agent taskslow-latency coding assistants
Function Calling Support: Yes
Tool Use Support: Yes

Resources

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