xAI: Grok 4 Fast (free) vs Pony Alpha
Compare xAI: Grok 4 Fast (free) by xAI against Pony Alpha by OpenRouter, context windows of 2.0M vs 200K, tested across 33 shared challenges. Updated April 2026.
Which is better, xAI: Grok 4 Fast (free) or Pony Alpha?
xAI: Grok 4 Fast (free) and Pony Alpha are both competitive models. xAI: Grok 4 Fast (free) costs $0/M input tokens vs $0/M for Pony Alpha. Context windows: 2000K vs 200K tokens. Compare their real outputs side by side below.
Key Differences Between xAI: Grok 4 Fast (free) and Pony Alpha
xAI: Grok 4 Fast (free) is made by xai while Pony Alpha is from openrouter. xAI: Grok 4 Fast (free) has a 2000K token context window compared to Pony Alpha's 200K. On pricing, xAI: Grok 4 Fast (free) costs $0/M input tokens vs $0/M for Pony Alpha.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Style Comparison
Pony Alpha uses 4.3x more bold
vsAsk them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
