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 May 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.
Per 1M tokens
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
