GPT OSS 120B vs Gemini 3.1 Pro Preview
Compare GPT OSS 120B by OpenAI against Gemini 3.1 Pro Preview by Google AI, context windows of 131K vs 1.0M, tested across 53 shared challenges. Updated April 2026.
Which is better, GPT OSS 120B or Gemini 3.1 Pro Preview?
GPT OSS 120B and Gemini 3.1 Pro Preview are both competitive models. GPT OSS 120B costs $0.18/M input tokens vs $2/M for Gemini 3.1 Pro Preview. Context windows: 131K vs 1049K tokens. Compare their real outputs side by side below.
Key Differences Between GPT OSS 120B and Gemini 3.1 Pro Preview
GPT OSS 120B is made by openai while Gemini 3.1 Pro Preview is from google. GPT OSS 120B has a 131K token context window compared to Gemini 3.1 Pro Preview's 1049K. On pricing, GPT OSS 120B costs $0.18/M input tokens vs $2/M for Gemini 3.1 Pro Preview.
No community votes yet. On paper, Gemini 3.1 Pro Preview has the edge — newer, bigger context window.
GPT OSS 120B is 15x cheaper per token — worth considering if cost matters.
Style Comparison
GPT OSS 120B uses 15.4x 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.
