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
Benchmark | Score / Notes |
---|---|
Humanity’s Last Exam (HLE) | 25.4% (Standard), 44.4% (Heavy) |
ARC-AGI-2 | 16.2% (near doubling previous top) |
AIME | Claimed near-perfect scores |
SWE-bench (Coding) | ~72–75% accuracy |
Multi-step Tasks | Supports 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
Feature | Grok 4 |
---|---|
Parameters | ~175–200B (estimated) |
Context Window | 128K tokens standard, up to 256K extended |
Modalities | Text, image, voice input |
Training Hardware | 200K+ Nvidia GPUs |
Key Benchmarks | HLE 25.4%/44.4%, SWE-bench 72–75% |
API Modes | Standard & multi-agent “Heavy” |
Pricing | Token-based pay-as-you-go (via MySynthos) |
Special Features | Real-time search, multimodal, voice input |