Model introduction
Claude Haiku 4.5 is Anthropic's compact model for low latency and scaled use, suited to real-time interaction, classification, extraction, and routine automation.
Model capabilities
Specifications come from the cited model material. Catalog tags help identify access features; use the source documentation for exact limits.
Verified specifications
- Official positioning
- Fast, compact Claude model
- Context window
- 200,000 tokens
- Maximum output
- 64,000 tokens
- Input / output
- Text, image / Text
Sources: B.AI Claude Haiku 4.5 model guide
Model pricing and access
Prices are read directly from the MoleAPI console catalog and shown by current billing group and context tier.
Your final charge follows the account group shown in the console.
Live pricing source
Pricing table
USD / 1M tokensStandardx1defaultInput $1 · Output $5
Input
$1 / 1M tokens
Output
$5 / 1M tokens
Cache read
$0.1 / 1M tokens
Cache write
$1.25 / 1M tokens
Discountx0.8discountInput $0.8 · Output $4
Input
$0.8 / 1M tokens
Output
$4 / 1M tokens
Cache read
$0.08 / 1M tokens
Cache write
$1 / 1M tokens
Relayx0.3relayInput $0.3 · Output $1.5
Input
$0.3 / 1M tokens
Output
$1.5 / 1M tokens
Cache read
$0.03 / 1M tokens
Cache write
$0.375 / 1M tokens
Access protocols
Available billing groups: Standard, Discount, Relay
- anthropic
- POST
- /v1/messages
- openai
- POST
- /v1/chat/completions
Complete model guide
Prepared from vendor sources and independently reviewed. · 2026-07-28
Claude Haiku 4.5 Model Overview
Claude Haiku 4.5 is a lightweight model in the Claude family released by Anthropic on October 15, 2025. It is positioned as its fastest and most cost-efficient model, offering near-frontier intelligence at a lower price. [7]
Model Positioning and Core Capabilities
Claude Haiku 4.5 is designed for AI applications sensitive to response speed, with performance in coding, computer use, and agentic tasks that can match Claude Sonnet 4. [7]
Anthropic positions Haiku 4.5 as the fastest latency tier in the Claude family. It supports text and image input, text output, multilingual processing, and vision understanding. [2] The model supports extended thinking, enabling configuration between fast responses and additional reasoning. [2]
Capabilities and Specifications
Claude Haiku 4.5 provides a 200K-token context window, with a maximum output length of 64K tokens for the synchronous Messages API. [2]
| Specification | Details |
|---|---|
| Context window | 200K tokens [2] |
| Maximum output | 64K tokens (synchronous Messages API) [2] |
| Input modalities | Text, images [2] |
| Output modalities | Text [2] |
| Reasoning capabilities | Supports extended thinking; does not support adaptive thinking [2] |
| Reliable knowledge cutoff | February 2025 [2] |
| Training data cutoff | July 2025 [2] |
Use Cases
Claude Haiku 4.5's low-latency positioning is suited to direct user-facing interaction scenarios such as real-time chatbots and content moderation. [1]
In development and automation workflows, the model can handle coding, computer use, and agentic tasks. [7] B.AI lists it as a suitable model for everyday information-processing tasks such as email classification, meeting summaries, and form data extraction. [1]
Important Limitations
Claude Haiku 4.5 has a 200K-token context window per request and a 64K-token output limit for synchronous calls. [2]
The model supports extended thinking but does not support adaptive thinking. [2] B.AI describes its complex or multi-step reasoning and creative capabilities as moderate, making it better suited to general tasks and concise information expression. [1]
Sources
[1] B.AI Claude Haiku 4.5 模型指南 [2] Anthropic Claude 模型概览 [7] Claude Haiku 4.5
Code examples
These examples use MoleAPI's OpenAI-compatible endpoint and run after you replace the API key.
curl https://api.moleapi.com/v1/chat/completions \
-H "Authorization: Bearer $MOLEAPI_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-haiku-4-5",
"messages": [{"role": "user", "content": "Hello"}]
}'Frequently asked questions
How is claude-haiku-4-5 priced?
This page reads prices from the MoleAPI console API and updates with model prices, context tiers, and account groups.
How can I access claude-haiku-4-5?
Protocols and endpoints come from the supported_endpoint_types field in the MoleAPI model catalog.
How do I switch an existing project to claude-haiku-4-5?
Keep the MoleAPI API address and key, replace the model parameter with the model ID on this page, then check protocol-specific parameter differences.
Where do the claude-haiku-4-5 model details come from?
Capabilities and limitations are checked against B.AI and the other cited pages. Pricing and available protocols come only from the MoleAPI console.