Andromeda Alpha vs Z.ai: GLM 5.1
Compare Andromeda Alpha by OpenRouter against Z.ai: GLM 5.1 by Z-ai, context windows of 128K vs 203K, tested across 30 shared challenges. Updated April 2026.
Which is better, Andromeda Alpha or Z.ai: GLM 5.1?
Andromeda Alpha and Z.ai: GLM 5.1 are both competitive models. Andromeda Alpha costs $0/M input tokens vs $1.4/M for Z.ai: GLM 5.1. Context windows: 128K vs 203K tokens. Compare their real outputs side by side below.
Key Differences Between Andromeda Alpha and Z.ai: GLM 5.1
Andromeda Alpha is made by openrouter while Z.ai: GLM 5.1 is from z-ai. Andromeda Alpha has a 128K token context window compared to Z.ai: GLM 5.1's 203K. On pricing, Andromeda Alpha costs $0/M input tokens vs $1.4/M for Z.ai: GLM 5.1.
No community votes yet. On paper, Z.ai: GLM 5.1 has the edge — bigger model tier, newer, bigger context window.
Style Comparison
Andromeda Alpha uses 41.1x more emoji
vsAsk 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.
