xAi: Grok 4

Grok 4 is xAI’s flagship multimodal AI, supporting text, image, and voice inputs with a large context window (up to 256K tokens). It excels at reasoning, coding, and real-time web/tool integration, available in standard and multi-agent “Heavy” modes for more complex tasks. It’s built for cutting-edge AI workflows but has faced some early moderation challenges.

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🧠 Grok 4 — xAI’s Flagship AI Model

With MySynthos, you can access Grok 4 and 6 other top AI models—including personalized AI, task-specific bots, and split-chat prompts with side-by-side AI assistance—without paying expensive monthly fees. Instead, buy tokens as you go, making it ideal for light users who want flexible, cost-efficient AI subscriptions all in one place.

⚙️ Architecture & Scale

  • Model Type: Large multimodal Transformer-based architecture
  • Parameters: Estimated ~175–200 billion (not officially disclosed but industry speculation aligns with this scale)
  • Modalities: Text, image, and voice input; text output
  • Context Window:
    • Standard API: ~128K tokens
    • Extended API: Up to 256K tokens for large-context workflows
  • Precision: Mixed-precision FP16/BF16 for training and inference efficiency
  • Special Features:
    • Native multimodal fusion for joint text/image/voice understanding
    • Voice input supported with “Eve” British-accented voice model
    • Real-time integrated tool use (web search, X (Twitter) search, code interpreter)

🧪 Training & Infrastructure

  • Training Cluster: xAI’s “Colossus” supercluster — over 200,000 Nvidia GPUs
  • Training Data: Diverse multi-domain dataset covering text, images, voice, and code (proprietary mix)
  • Training Techniques:
    • Reinforcement learning with human feedback (RLHF)
    • Large-scale self-supervised pretraining
    • Multi-agent training for “Heavy” model variant

📊 Performance & Benchmarks

BenchmarkScore / Notes
Humanity’s Last Exam (HLE)25.4% (Standard), 44.4% (Heavy)
ARC-AGI-216.2% (near doubling previous top)
AIMEClaimed near-perfect scores
SWE-bench (Coding)~72–75% accuracy
Multi-step TasksSupports multi-agent “study group” mode for deep reasoning

🛠 Inference & API Features

  • Modes:
    • Standard single-agent
    • “Heavy” multi-agent collaborative mode (subscription-based)
  • Input Types: Text, image, voice
  • Context Handling: Supports long documents, complex multi-turn dialogues, multi-modal content
  • Tooling: Built-in web/X search, code interpreter, file handling, and function calling
  • Pricing Model: Token-based usage via MySynthos, enabling pay-as-you-go rather than expensive monthly subscriptions for light users

⚡ Strengths & Use Cases

  • Cutting-edge reasoning and coding performance
  • Extended long-context workflows (128K–256K tokens)
  • Multimodal understanding with voice input
  • Ideal for developers, researchers, and creatives requiring flexible access via token purchase
  • Integrated real-time search and tool use for up-to-date information retrieval

⚠️ Considerations

  • Early launch faced moderation challenges around bias and offensive outputs
  • “Heavy” mode requires subscription, but MySynthos offers cost-efficient token-based alternatives
  • Full deployment needs significant compute, but optimized API endpoints available

TL;DR Table

FeatureGrok 4
Parameters~175–200B (estimated)
Context Window128K tokens standard, up to 256K extended
ModalitiesText, image, voice input
Training Hardware200K+ Nvidia GPUs
Key BenchmarksHLE 25.4%/44.4%, SWE-bench 72–75%
API ModesStandard & multi-agent “Heavy”
PricingToken-based pay-as-you-go (via MySynthos)
Special FeaturesReal-time search, multimodal, voice input

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