GPT-5.2 Pro vs Sonoma Dusk Alpha
Compare GPT-5.2 Pro by OpenAI against Sonoma Dusk Alpha by OpenRouter, context windows of 400K vs 2.0M, tested across 15 shared challenges. Updated April 2026.
Which is better, GPT-5.2 Pro or Sonoma Dusk Alpha?
GPT-5.2 Pro and Sonoma Dusk Alpha are both competitive models. GPT-5.2 Pro costs $21/M input tokens vs $0/M for Sonoma Dusk Alpha. Context windows: 400K vs 2000K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5.2 Pro and Sonoma Dusk Alpha
GPT-5.2 Pro is made by openai while Sonoma Dusk Alpha is from openrouter. GPT-5.2 Pro has a 400K token context window compared to Sonoma Dusk Alpha's 2000K. On pricing, GPT-5.2 Pro costs $21/M input tokens vs $0/M for Sonoma Dusk Alpha.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Style Comparison
Sonoma Dusk Alpha uses 20.6x more transitions
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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.
