Compare Horizon Beta and Sonoma Dusk Alpha, both from OpenRouter, context windows of 256K vs 2.0M, tested across 35 shared challenges. Updated April 2026.
Horizon Beta and Sonoma Dusk Alpha are both competitive models. Horizon Beta costs $0/M input tokens vs $0/M for Sonoma Dusk Alpha. Context windows: 256K vs 2000K tokens. Compare their real outputs side by side below.
Horizon Beta is made by openrouter while Sonoma Dusk Alpha is from openrouter. Horizon Beta has a 256K token context window compared to Sonoma Dusk Alpha's 2000K. On pricing, Horizon Beta costs $0/M input tokens vs $0/M for Sonoma Dusk Alpha.
No community votes yet. On paper, Sonoma Dusk Alpha has the edge — bigger model tier, newer, bigger context window.
Sonoma Dusk Alpha uses 119.9x more bold
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 and Sonoma Dusk Alpha, both from OpenRouter, context windows of 256K vs 2.0M, tested across 35 shared challenges. Updated April 2026.
Horizon Beta and Sonoma Dusk Alpha are both competitive models. Horizon Beta costs $0/M input tokens vs $0/M for Sonoma Dusk Alpha. Context windows: 256K vs 2000K tokens. Compare their real outputs side by side below.
Horizon Beta is made by openrouter while Sonoma Dusk Alpha is from openrouter. Horizon Beta has a 256K token context window compared to Sonoma Dusk Alpha's 2000K. On pricing, Horizon Beta costs $0/M input tokens vs $0/M for Sonoma Dusk Alpha.
No community votes yet. On paper, Sonoma Dusk Alpha has the edge — bigger model tier, newer, bigger context window.
Sonoma Dusk Alpha uses 119.9x more bold
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.
