xAI: Grok 4 vs Horizon Alpha
Compare xAI: Grok 4 by xAI against Horizon Alpha by OpenRouter, in 2 community votes, xai: grok 4 wins 100% of head-to-head duels, context windows of 256K vs 256K, tested across 33 shared challenges. Updated April 2026.
Which is better, xAI: Grok 4 or Horizon Alpha?
xAI: Grok 4 is the better choice overall, winning 100% of 2 blind community votes on Rival. xAI: Grok 4 costs $3/M input tokens vs $0/M for Horizon Alpha. Context windows: 256K vs 256K tokens. Compare their real outputs side by side below.
Key Differences Between xAI: Grok 4 and Horizon Alpha
xAI: Grok 4 is made by xai while Horizon Alpha is from openrouter. xAI: Grok 4 has a 256K token context window compared to Horizon Alpha's 256K. On pricing, xAI: Grok 4 costs $3/M input tokens vs $0/M for Horizon Alpha. In community voting, In 2 community votes, xAI: Grok 4 wins 100% of head-to-head duels.
In 2 community votes, xAI: Grok 4 wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 2+ human preference judgments for this pair.
Pick xAI: Grok 4. In 2 blind votes, xAI: Grok 4 wins 100% of the time. That's not luck.
Style Comparison
xAI: Grok 4 uses 267.9x 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.
