Compare Horizon Beta by OpenRouter against GPT-1 by OpenAI, context windows of 256K vs 1K, tested across 7 shared challenges. Updated April 2026.
Horizon Beta and GPT-1 are both competitive models. Context windows: 256K vs 1K tokens. Compare their real outputs side by side below.
Horizon Beta is made by openrouter while GPT-1 is from openai. Horizon Beta has a 256K token context window compared to GPT-1's 1K.
No community votes yet. On paper, Horizon Beta has the edge — bigger model tier, newer, bigger context window.
Horizon Beta uses 8.2x more lists
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.

Compare Horizon Beta by OpenRouter against GPT-1 by OpenAI, context windows of 256K vs 1K, tested across 7 shared challenges. Updated April 2026.
Horizon Beta and GPT-1 are both competitive models. Context windows: 256K vs 1K tokens. Compare their real outputs side by side below.
Horizon Beta is made by openrouter while GPT-1 is from openai. Horizon Beta has a 256K token context window compared to GPT-1's 1K.
No community votes yet. On paper, Horizon Beta has the edge — bigger model tier, newer, bigger context window.
Horizon Beta uses 8.2x more lists
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.

7 fights queued
7 fights queued