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About

Claude Haiku 5.5 is an Anthropic AI model designed for high-volume, latency-sensitive workloads such as classification, routing, extraction, and subagent tasks. The model supports adaptive thinking, allowing it to determine when and how much reasoning to perform based on the request. Developers can use the effort parameter to balance response quality against speed and cost, while adaptive thinking is enabled by default. Claude Haiku 5.5 provides a 1 million token context window and supports outputs of up to 128,000 tokens, increasing from the 200,000-token context window and 64,000-token output limit of Claude Haiku 4.5. It also supports browser use through the Claude API and Google Cloud for workflows that require interaction with web-based environments. Claude Haiku 5.5 uses Anthropic's newer tokenizer introduced with Claude 4.7 and later models, which results in the same text using approximately 30% more tokens than with Claude Haiku 4.5.

About

Grok Code Fast 1 is a high-speed, economical reasoning model designed specifically for agentic coding workflows. Unlike traditional models that can feel slow in tool-based loops, it delivers near-instant responses, excelling in everyday software development tasks. Built from scratch with a programming-rich corpus and refined on real-world pull requests, it supports languages like TypeScript, Python, Java, Rust, C++, and Go. Developers can use it for everything from zero-to-one project building to precise bug fixes and codebase Q&A. With optimized inference and caching techniques, it achieves impressive responsiveness and a 90%+ cache hit rate when integrated with partners like GitHub Copilot, Cursor, and Cline. Offered at just $0.20 per million input tokens and $1.50 per million output tokens, Grok Code Fast 1 strikes a strong balance between speed, performance, and affordability.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Developers, AI application builders, enterprises, data processing teams, and agent developers that need a fast AI model for high-volume classification, routing, extraction, browser use, subagent workflows, and other latency-sensitive tasks

Audience

Grok Code Fast 1 is designed for developers, engineering teams, and coding platform providers who need a fast, cost-effective AI model optimized for real-world software development

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$0.10 per 1M tokens (input)
For prompts under 100K tokens, it's $0.10 input / $0.50 output per million tokens with cache reads at $0.01. Above 100K tokens, $0.50 input / output $2.50 per million, with cache reads at $0.05.
Free Version Not Supported
Free Trial Not Supported

Pricing

$0.20 per million input tokens
$0.20 per million input tokens
$1.50 per million output tokens
$0.02 per million cached tokens
Free Version Supported
Free Trial Supported

Reviews/Ratings

Overall 5.0 / 5
features 4.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Pros & Cons from Real Users

Pros

  • Claude Haiku 5.5 is impressively fast while still being capable enough for a wide range of everyday AI tasks. I found it particularly good for quick coding work, summaries, classification, and other high-volume tasks where responsiveness matters. It's a substantial improvement over Haiku 4.5 and offers a great balance between intelligence, speed, and cost.

Cons

  • Haiku 5.5 is still designed as the lightweight model in the Claude lineup, and that becomes noticeable on more complicated reasoning and long-running tasks. For difficult coding problems or work that requires a lot of judgment, I'd still rather use Sonnet 5.5 or Opus 5.5.

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Anthropic
Founded: 2021
United States
claude.ai

Company Information

SpaceXSI
Founded: 2023
United States
x.ai

Alternatives

Alternatives

JetBrains Junie

JetBrains Junie

JetBrains
Claude Opus 5.5

Claude Opus 5.5

Anthropic
Agent 3

Agent 3

Replit
GPT-6 Luna

GPT-6 Luna

OpenAI
Claude Sonnet 4

Claude Sonnet 4

Anthropic
Grok 4.5

Grok 4.5

SpaceXSI
DeepSeek-V2

DeepSeek-V2

DeepSeek

Categories

AI Coding Models Supported
AI Models Supported
AI Vision Models Supported
Foundation Models Supported
Multimodal Models Supported

Categories

Agentic AI Supported
AI Coding Agents Supported
AI Coding Models Supported
AI Models Supported

Integrations

C Supported
C# Supported
C++ Supported
Cursor Supported
Dessix Supported
Devin Desktop Supported
GitHub Supported
GitHub Copilot Supported
Go Supported
Java Supported
JavaScript Supported
OpenCode Supported
PHP Supported
Python Supported
Rust Supported
Shiori Supported
TypeScript Supported
Visual Studio Code Supported
Cheaper Inference Supported
DataGrip Supported

Integrations

C Supported
C# Supported
C++ Supported
Cursor Supported
Dessix Supported
Devin Desktop Supported
GitHub Supported
GitHub Copilot Supported
Go Supported
Java Supported
JavaScript Supported
OpenCode Supported
PHP Supported
Python Supported
Rust Supported
Shiori Supported
TypeScript Supported
Visual Studio Code Supported
Cheaper Inference Not Supported
DataGrip Not Supported
Claim Claude Haiku 5.5 and update features and information
Claim Claude Haiku 5.5 and update features and information
Claim Grok Code Fast 1 and update features and information
Claim Grok Code Fast 1 and update features and information