GPT-5.1 Chat vs Pony Alpha
Compare GPT-5.1 Chat by OpenAI against Pony Alpha by OpenRouter, context windows of 128K vs 200K, tested across 46 shared challenges. Updated April 2026.
Which is better, GPT-5.1 Chat or Pony Alpha?
GPT-5.1 Chat and Pony Alpha are both competitive models. GPT-5.1 Chat costs $1.25/M input tokens vs $0/M for Pony Alpha. Context windows: 128K vs 200K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5.1 Chat and Pony Alpha
GPT-5.1 Chat is made by openai while Pony Alpha is from openrouter. GPT-5.1 Chat has a 128K token context window compared to Pony Alpha's 200K. On pricing, GPT-5.1 Chat costs $1.25/M input tokens vs $0/M for Pony 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
Pony Alpha uses 71.4x more headings
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.
