Gemma 3 12B vs GPT-4.5
Compare Gemma 3 12B by Google AI against GPT-4.5 by OpenAI, tested across 25 shared challenges. Updated April 2026.
Which is better, Gemma 3 12B or GPT-4.5?
Gemma 3 12B and GPT-4.5 are both competitive models. Gemma 3 12B costs $0.03/M input tokens vs $75/M for GPT-4.5. Compare their real outputs side by side below.
Key Differences Between Gemma 3 12B and GPT-4.5
Gemma 3 12B is made by google while GPT-4.5 is from openai. On pricing, Gemma 3 12B costs $0.03/M input tokens vs $75/M for GPT-4.5.
No community votes yet. On paper, GPT-4.5 has the edge — bigger model tier, bigger context window.
Gemma 3 12B is 5000x cheaper per token — worth considering if cost matters.
Style Comparison
GPT-4.5 uses 22.2x more headings
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.
