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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

ReinforceNow is an end-to-end platform for continual learning with AI agents, built to help teams deploy, train, and repeat. It lets developers build AI agents and continuously train them on production traffic, or let Claude Code help set it up automatically. It handles reinforcement learning infrastructure, experiment orchestration, agent versioning, GPU training logic, and telemetry, so teams can focus on agent logic, data collection, and rewards. ReinforceNow supports fast LLM fine-tuning with LoRA, high-throughput training, and wide model support for open source models like Qwen, DeepSeek, and GPT-OSS. It provides advanced telemetry to evaluate, monitor, and iterate on AI agent LLM applications, with traces, rewards, experiment metrics, and training observability. Teams can train on long-horizon tasks with 32k to 1 million context size, build vertical agents for multi-turn and long-running tasks, and use rich tooling for reinforcement learning workflows.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

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

AI product teams building production agents that need continuous reinforcement learning, experiment tracking, model fine-tuning, and scalable deployment workflows

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version
Free Trial

Pricing

No information available.
Free Version
Free Trial

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:

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Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

xAI
Founded: 2023
United States
grok.com

Company Information

ReinforceNow
United States
www.reinforcenow.ai/

Alternatives

Alternatives

GLM-5

GLM-5

Zhipu AI
MiniMax-M2.1

MiniMax-M2.1

MiniMax
GLM-5

GLM-5

Zhipu AI
TF-Agents

TF-Agents

Tensorflow

Categories

Categories

Integrations

Amazon Web Services (AWS)
C#
CSS
Claude Code
Clojure
Cursor
FastRouter
Google Cloud Platform
Grok
Java
JavaScript
Kotlin
LaunchLemonade
Microsoft Foundry
Microsoft Foundry Models
OpenClaw
Ruby
RunPod
TypeScript
gpt-oss-120b

Integrations

Amazon Web Services (AWS)
C#
CSS
Claude Code
Clojure
Cursor
FastRouter
Google Cloud Platform
Grok
Java
JavaScript
Kotlin
LaunchLemonade
Microsoft Foundry
Microsoft Foundry Models
OpenClaw
Ruby
RunPod
TypeScript
gpt-oss-120b
Claim Grok 4.1 Fast and update features and information
Claim Grok 4.1 Fast and update features and information
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Claim ReinforceNow and update features and information