GPT-5.4 vs Polaris Alpha
Compare GPT-5.4 by OpenAI against Polaris Alpha by OpenRouter, context windows of 1.1M vs 256K, tested across 34 shared challenges. Updated April 2026.
Which is better, GPT-5.4 or Polaris Alpha?
GPT-5.4 and Polaris Alpha are both competitive models. GPT-5.4 costs $2.5/M input tokens vs $0/M for Polaris Alpha. Context windows: 1050K vs 256K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5.4 and Polaris Alpha
GPT-5.4 is made by openai while Polaris Alpha is from openrouter. GPT-5.4 has a 1050K token context window compared to Polaris Alpha's 256K. On pricing, GPT-5.4 costs $2.5/M input tokens vs $0/M for Polaris Alpha.
No community votes yet. On paper, GPT-5.4 has the edge — bigger model tier, newer, bigger context window, major provider backing.
Style Comparison
GPT-5.4 uses 406.1x 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.
