Battle of the Models

Compare specific LLM models, context windows, and capabilities.

Grok 4.1 Fast

DEPRECATED

Grok (xAI)

This model is no longer active/free — kept for reference.

Intelligence Score 96/100

Model Popularity 0 votes

Context Window 2M

Pricing Model Commercial / Paid

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A-TIER

OpenRouter

Intelligence Score 85/100

Context Window 1M Context

Pricing Model Free / Open

Model Popularity 0 votes

View Provider Analysis →

FINAL VERDICT

With an intelligence score of 96/100 vs 85/100, Grok 4.1 Fast outperforms NVIDIA Nemotron 3.5 Lightning by 11 points.

HEAD-TO-HEAD

Feature	Grok 4.1 Fast	NVIDIA Nemotron 3.5 Lightning
Context Window	2M	1M Context
Architecture	Transformer	Transformer
Est. MMLU Score	~92-95%	~80-84%
Release Date	2024	2024
Pricing Model	Paid / Commercial	Free Tier
Rate Limit (RPM)	Varies (low for free tier)	20 requests/minute
Daily Limit	Credit-based	50 requests/day (up to 1000 with $10 topup)
Capabilities	No specific data	No specific data
Performance Tier	S-Tier (Elite)	A-Tier (Excellent)
Speed Estimate	Medium	Medium
Primary Use Case	General Purpose	General Purpose
Model Size	Undisclosed	Undisclosed
Limitations	$25/month credit cap (generous but finite) Lower rate limits on free tier Vision models have smaller context	Limits depend on account history/topup Community key models Free models have lower priority during peak demand
Key Strengths	Monthly renewing $25 free credits OpenAI-compatible API (drop-in replacement) Real-time knowledge from X/Twitter data	Unified API for 100+ models from all providers OpenAI-compatible endpoint (drop-in replacement) Automatic model fallback and routing