Grok 4.1 Fast

Grok 4.1 Fast

SpaceXAI
+
+

Related Products

  • Gemini Enterprise Agent Platform
    1,161 Ratings
    Visit Website
  • LTX
    182 Ratings
    Visit Website
  • Google AI Studio
    41 Ratings
    Visit Website
  • LM-Kit.NET
    29 Ratings
    Visit Website
  • JetBrains Junie
    12 Ratings
    Visit Website
  • BAND
    3 Ratings
    Visit Website
  • Kitecyber
    82 Ratings
    Visit Website
  • AddSearch
    145 Ratings
    Visit Website
  • BoldTrail
    2,126 Ratings
    Visit Website
  • Concord
    237 Ratings
    Visit Website

About

Grok 4.1 Fast is an xAI model designed to deliver advanced tool-calling capabilities with a massive 2-million-token context window. It excels at complex real-world tasks such as customer support, finance, troubleshooting, and dynamic agent workflows. The model pairs seamlessly with the new Agent Tools API, which enables real-time web search, X search, file retrieval, and secure code execution. This combination gives developers the power to build fully autonomous, production-grade agents that plan, reason, and use tools effectively. Grok 4.1 Fast is trained with long-horizon reinforcement learning, ensuring stable multi-turn accuracy even across extremely long prompts. With its speed, cost-efficiency, and high benchmark scores, it sets a new standard for scalable enterprise-grade AI agents.

About

Mistral Medium 3.5 is a flagship 128B dense model that merges instruction-following, reasoning, and coding into a single set of weights. It has a 256K context window, configurable reasoning effort, multimodal input, strong agentic capabilities, and is built for long-horizon tasks that require reliable multi-tool use and structured outputs. The model powers remote agents in Mistral Vibe, allowing coding sessions to run in the cloud, work through long tasks independently, and execute multiple sessions in parallel. Agents can be launched from the Vibe CLI or Le Chat, with local CLI sessions moved to the cloud while preserving history, task state, and approvals. Users can inspect file diffs, tool calls, progress states, and questions as work proceeds. Each coding session runs in an isolated sandbox and can handle module refactors, test generation, dependency upgrades, CI investigations, and bug fixes, then open a GitHub pull request for review.

Platforms Supported

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

Platforms Supported

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

Audience

This content is ideal for developers, enterprises, and technical teams seeking to build advanced AI agents that require real-time data access, long-context reasoning, and reliable tool-calling capabilities

Audience

Developers, engineering teams, and knowledge workers seeking to delegate coding, research, and cross-tool workflows to autonomous cloud-based AI agents

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 Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Pricing

$14.99 per month
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
support 5.0 / 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

  • Grok 4.1 Fast is one of the most capable agentic AI models available today, combining frontier-level intelligence with blazing speed and exceptional tool-calling performance. Its 2M-token context window enables consistent reasoning over extremely long conversations, multi-turn workflows, and complex planning. Thanks to extensive RL training across diverse simulated environments, the model excels in real-world scenarios such as customer support, finance, research, and autonomous decision-making. Paired with the new Agent Tools API—featuring real-time X search, internet browsing, code execution, file retrieval, and MCP integration—Grok 4.1 Fast can orchestrate multi-step tasks seamlessly and autonomously. Benchmark results reinforce its strengths, outperforming or rivaling leading models across tool calling, long-context reasoning, and multihop search.

Cons

  • Because Grok 4.1 Fast is designed for sophisticated agentic use cases, developers new to tool-calling workflows may face a learning curve when integrating its advanced capabilities. Its reasoning variant is optimized for accuracy rather than instant response time, which may feel slower compared to lightweight chat models. And while pricing is competitive—especially with free access via OpenRouter—the cost of high-volume tool calls may add up for large enterprise workloads once promotional periods end.

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

SpaceXAI
Founded: 2023
United States
grok.com

Company Information

Mistral AI
Founded: 2023
France
mistral.ai/news/vibe-remote-agents-mistral-medium-3-5/

Alternatives

Alternatives

Mistral Vibe

Mistral Vibe

Mistral AI
Mistral Small 4

Mistral Small 4

Mistral AI
Grok 4.8

Grok 4.8

SpaceXAI
GLM-5.1

GLM-5.1

Z.ai
Grok 4.5

Grok 4.5

SpaceXAI
Mistral Large

Mistral Large

Mistral AI

Categories

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

Categories

AI Models Supported

Integrations

C# Supported
C++ Supported
Clojure Supported
Elixir Supported
GitHub Not Supported
Go Supported
Grok Imagine Supported
HTML Supported
JavaScript Supported
Jira Not Supported
Kotlin Supported
Laravel Supported
LaunchLemonade Supported
Microsoft Foundry Supported
Microsoft Teams Not Supported
Ruby Supported
SuperGrok Supported
Visual Basic Supported
Zo Computer Supported
iMini Supported

Integrations

C# Not Supported
C++ Not Supported
Clojure Not Supported
Elixir Not Supported
GitHub Supported
Go Not Supported
Grok Imagine Not Supported
HTML Not Supported
JavaScript Not Supported
Jira Supported
Kotlin Not Supported
Laravel Not Supported
LaunchLemonade Not Supported
Microsoft Foundry Not Supported
Microsoft Teams Supported
Ruby Not Supported
SuperGrok Not Supported
Visual Basic Not Supported
Zo Computer Not Supported
iMini Not Supported
Claim Grok 4.1 Fast and update features and information
Claim Grok 4.1 Fast and update features and information
Claim Mistral Medium 3.5 and update features and information
Claim Mistral Medium 3.5 and update features and information