claude-haiku-5-5
Claude Haiku 5.5 is Anthropic's fastest and most efficient model in the Claude 5.5 family, offering a 1M-token context window, strong coding and reasoning capabilities, and lower costs for high-volume AI applications.
Pricing: Input 15 credits / 1M tokens (≈ $0.07), Output 75 credits / 1M tokens (≈ $0.38).
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Claude Haiku 5.5 API for Efficient AI Agents at Lower Cost on ModelFold
Build with Anthropic's Claude Haiku 5.5 API on ModelFold for fast responses, cost-efficient inference, 1M-token context, and advanced coding capabilities. Try Claude Haiku 5.5 online with new-user credits, then integrate the API into your AI agents, SaaS applications, and automated workflows.

Key Features of Claude Haiku 5.5 API on ModelFold
Fast Claude Haiku 5.5 API for Low-Latency Applications
Build responsive AI applications with Claude Haiku 5.5 API. Deliver fast responses for chatbots, virtual assistants, and real-time SaaS tools. Handle frequent requests efficiently while maintaining smooth user experiences across high-volume workflows.

Affordable Claude Haiku 5.5 API for Cost-Efficient AI Applications
Scale AI applications with Claude Haiku 5.5 API while keeping inference costs low. Process large volumes of requests, automate routine tasks, and build affordable AI-powered products without relying on more expensive models for everyday workloads.

Claude Haiku 5.5 with a 1M Token Context Window
Process long documents, large codebases, and extended conversations with the Claude Haiku 5.5 API's 1M token context window. Keep more information available in a single request, making it easier to build document analysis tools, knowledge assistants, and complex AI workflows.

Claude Haiku 5.5 Adaptive Thinking for Efficient Reasoning
Balance reasoning quality, speed, and efficiency with Claude Haiku 5.5 Adaptive Thinking. The model adjusts its reasoning effort based on task complexity, while configurable effort settings give developers greater control over performance and token consumption.

Claude Haiku 5.5 API for AI Agents and Coding Workflows
Build AI agents and coding tools with Claude Haiku 5.5 API. Automate code generation, tool interactions, and multi-step tasks with efficient model execution. Use Claude Haiku 5.5 as a lightweight subagent in larger AI systems to streamline development workflows.

Claude Haiku 5.5 Multimodal API for Text and Image Inputs
Build multimodal applications with Claude Haiku 5.5 API using text and image inputs. Analyze screenshots, extract visual information, and interpret images alongside written instructions. Add visual understanding to document processing, customer support, and AI-powered SaaS tools.

Explore Claude Haiku 5.5 Benchmark Results
Claude Haiku 5.5 Benchmark Results vs Haiku 4.5, GPT-6 Luna, and Sonnet 5.5
Claude Haiku 5.5 achieves 72.4% on OSWorld 2.1, 39.2% on Terminal-Bench 4.0, and 45.9% on Humanity's Last Exam without tools. The benchmark results show improvements over Haiku 4.5 across computer use, agentic coding, and reasoning. The comparison also includes GPT-6 Luna and Sonnet 5.5, highlighting differences in model performance across various tasks and evaluation settings.

How to Use Claude Haiku 5.5 API on ModelFold
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Step 1: Create Your ModelFold Account
Sign up for a ModelFold account to get started with Claude Haiku 5.5 API. New users receive free credits to explore supported AI models and test their capabilities. Log in to your dashboard to manage your account and API usage.
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Step 2: Test Claude Haiku 5.5 in the Playground
Open the Claude Haiku 5.5 API playground on ModelFold. Select the model, enter your prompt, and adjust available settings to test different responses. Explore its capabilities and refine your prompts before integrating the API into your application.
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Step 3: Get Your Claude Haiku 5.5 API Key
Navigate to the API Key Management page in your ModelFold dashboard and create an API key. Use this key to authenticate Claude Haiku 5.5 API requests. Store your credentials securely and review the API documentation before making your first call.
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Step 4: Integrate Claude Haiku 5.5 into Your Application
Follow the ModelFold API documentation to integrate Claude Haiku 5.5 into your project. Configure your requests, send prompts, and process model responses. Start building AI chatbots, SaaS features, and automated workflows with a simple API integration.
Claude Haiku 5.5 vs Other Claude Models
Compare Claude Haiku 5.5 with Haiku 4.5, Sonnet 5.5, and Opus 5.5 to find the right Claude API for your applications. ModelFold provides access to all four models through one unified API platform, making it easy to explore their differences in speed, cost, reasoning, and coding capabilities. Choose Claude Haiku 5.5 for fast, affordable AI workloads, or switch to other Claude models for more demanding tasks.
| Feature | Claude Haiku 4.5 | Claude Haiku 5.5 | Claude Sonnet 5.5 | Claude Opus 5.5 |
|---|---|---|---|---|
| Model Positioning | Lightweight | Advanced Lightweight | Balanced Performance | Flagship Intelligence |
| Context Window | 200K | 1M | 1M | 1M |
| API Cost | Low | Very Low | Medium | High |
| Response Speed | Fast | Very Fast | Fast | Task-Dependent |
| Reasoning | Moderate | Improved | Advanced | Most Advanced |
| Coding & Agents | Basic Tasks | Efficient Workflows | Complex Workflows | Advanced Multi-Step Tasks |
| Best For | Simple Automation | High-Volume AI Apps | Coding & AI Agents | Complex Reasoning |
Compare Claude Haiku 5.5 and GPT-6 Luna APIs on ModelFold
Claude Haiku 5.5 vs GPT-6 Luna: Performance and Capabilities
Claude Haiku 5.5 shows strong performance in multi-step tasks, document extraction, and classification, while GPT-6 Luna stands out for faster response times and efficient token usage. Both models offer competitive capabilities, but the best choice depends on whether your application prioritizes task accuracy, latency, or output efficiency.

Compare Claude Haiku 5.5 and GPT-6 Luna API Costs on ModelFold
Claude Haiku 5.5 and GPT-6 Luna offer similar entry-level API pricing, but their costs can differ for longer prompts and larger outputs. ModelFold provides access to both models through one platform, allowing developers to compare performance, evaluate token efficiency, and select the right API for their workloads.

Explore Claude Haiku 5.5 API Use Cases on ModelFold
Build Real-Time AI Chatbots with Claude Haiku 5.5 API
Build responsive AI chatbots with Claude Haiku 5.5 API for customer support, virtual assistants, and interactive SaaS products. Its fast inference supports low-latency conversations, helping applications handle frequent user requests and maintain smooth interactions.
Claude Haiku 5.5 for Long-Context Document Analysis
Use Claude Haiku 5.5 API with its 1M token context window to analyze lengthy reports, research papers, and large document collections. Extract key information, summarize complex content, and build knowledge assistants that process extensive context in a single request.
Create AI Agents with Claude Haiku 5.5 API
Develop AI agents with Claude Haiku 5.5 API for multi-step workflows, tool interactions, and computer-based tasks. Its agent capabilities support browser automation, information retrieval, and structured task execution across connected tools and applications.
Claude Haiku 5.5 API for Coding Assistants and Developer Tools
Integrate Claude Haiku 5.5 API into coding assistants, IDE extensions, and developer platforms. Generate functions, explain existing code, identify bugs, and automate routine development tasks while processing relevant project context.
Low-Cost Claude Haiku 5.5 API for High-Volume Data Processing
Process large volumes of text with Claude Haiku 5.5 API for data extraction, content classification, and automated routing. Its cost-efficient inference supports processing support tickets, customer feedback, business records, and other repetitive workloads at scale.
Claude Haiku 5.5 Adaptive Thinking for Multi-Step AI Workflows
Build AI applications with Claude Haiku 5.5 Adaptive Thinking to handle tasks with varying levels of complexity. Adjust reasoning effort for simple requests or complex instructions, helping developers balance response quality, latency, and token consumption.
Why Choose ModelFold for Claude Haiku 5.5 API
Try Claude Haiku 5.5 API Free with New-User Credits
Explore Claude Haiku 5.5 API on ModelFold with free credits for new users. Test prompts, evaluate responses, and explore model capabilities before committing to paid usage. Credit coverage depends on your selected settings, and you can review the estimated cost before generating.
Access Claude Haiku 5.5 with Affordable API Pricing
Build and scale AI applications with cost-effective Claude Haiku 5.5 API access on ModelFold. Enjoy transparent pricing and flexible usage-based billing without managing multiple subscriptions. Keep API expenses under control as your application grows.
Integrate Claude Haiku 5.5 with a Simple API
Connect Claude Haiku 5.5 API to your applications through ModelFold's straightforward integration process. Get your API key, follow clear documentation, and start making requests. Spend less time on setup and more time building AI-powered features for your users.
Test Claude Haiku 5.5 in an Online Playground
Try Claude Haiku 5.5 online through ModelFold's interactive playground. Experiment with prompts, adjust available settings, and review AI responses before integrating the API. Validate your ideas and refine workflows without writing code for every test.
Manage Multiple AI Models Through One API Platform
Access Claude Haiku 5.5 and other leading AI models through ModelFold's unified platform. Manage API keys, monitor usage, and handle billing in one place. Simplify multi-model development and switch between supported models without managing separate providers.
Get Reliable Support for Claude API Integration
Build with confidence using ModelFold's developer support resources. Access API documentation, integration guidance, and customer assistance when you encounter setup questions or request errors. Resolve issues more efficiently and keep your AI applications running smoothly.
Frequently Asked Questions
What is Claude Haiku 5.5?⌄
Claude Haiku 5.5 is a lightweight AI model developed by Anthropic. It supports text and image inputs, coding, reasoning, and AI agent workflows. The model focuses on fast inference and efficient processing for a wide range of applications.
How much does Claude Haiku 5.5 API cost?⌄
Claude Haiku 5.5 API uses token-based pricing, with costs depending on input and output token usage. Longer prompts may have different pricing tiers. You can check the current Claude Haiku 5.5 API pricing on ModelFold before integrating the model.
Can I use Claude Haiku 5.5 API for free?⌄
New users receive free credits when signing up for ModelFold. You can use these credits to explore Claude Haiku 5.5, depending on the selected settings and credit requirements. Check the estimated credit cost before submitting a request.
How do I access Claude Haiku 5.5 API on ModelFold?⌄
Create a ModelFold account, open the API dashboard, and generate an API key. Follow the Claude Haiku 5.5 API documentation to configure authentication, send requests, and integrate the model into your application.
What is the context window of Claude Haiku 5.5?⌄
Claude Haiku 5.5 supports a context window of up to 1 million tokens. This allows the model to process long documents, large codebases, and extended conversations within a single request, subject to the API's input limits.
What's New in Claude Haiku 5.5 Compared to Haiku 4.5?⌄
Claude Haiku 5.5 expands the context window from 200K to 1M tokens and introduces adaptive thinking. It also improves performance across coding, reasoning, and computer-use benchmarks compared to Haiku 4.5.
What is the difference between Claude Haiku 5.5 and Sonnet 5.5?⌄
Claude Haiku 5.5 focuses on fast, lower-cost inference, while Sonnet 5.5 targets more demanding coding, reasoning, and agent workflows. Both models are available on ModelFold, allowing developers to compare their capabilities and choose based on application requirements.
Can Claude Haiku 5.5 process images?⌄
Yes. Claude Haiku 5.5 supports both text and image inputs, with text-based outputs. Developers can use it to analyze screenshots, interpret visual information, and extract details from images within supported API workflows.
| Input | 15 credits 1M tokens≈ $0.07 |
| Output | 75 credits 1M tokens≈ $0.38 |
Billed per token: input and output are priced separately, and thinking tokens count as output. The Playground charges exactly the same way.
Read API docs →curl https://ai.modelfold.online/v1/chat/completions \
-H "Authorization: Bearer $MODELFOLD_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"claude-haiku-5-5","messages":[{"role":"user","content":"Hello"}]}'








