GPT-4.1 Nano vs Horizon Beta
Compare GPT-4.1 Nano by OpenAI against Horizon Beta by OpenRouter, in 4 community votes, horizon beta wins 75% of head-to-head duels, context windows of 1.0M vs 256K, tested across 41 shared challenges. Updated April 2026.
Which is better, GPT-4.1 Nano or Horizon Beta?
Horizon Beta is the better choice overall, winning 75% of 4 blind community votes on Rival. GPT-4.1 Nano costs $0.1/M input tokens vs $0/M for Horizon Beta. Context windows: 1048K vs 256K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-4.1 Nano and Horizon Beta
GPT-4.1 Nano is made by openai while Horizon Beta is from openrouter. GPT-4.1 Nano has a 1048K token context window compared to Horizon Beta's 256K. On pricing, GPT-4.1 Nano costs $0.1/M input tokens vs $0/M for Horizon Beta. In community voting, In 4 community votes, Horizon Beta wins 75% of head-to-head duels.
In 4 community votes, Horizon Beta wins 75% of head-to-head duels. Horizon Beta leads in Reasoning. Based on blind community voting from the Rival open dataset of 4+ human preference judgments for this pair.
Pick Horizon Beta. In 4 blind votes, Horizon Beta wins 75% of the time. That's not luck.
Horizon Beta particularly excels in Reasoning.
Style Comparison
GPT-4.1 Nano uses 561.5x more bold
vs
Ask 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.
