GPT OSS 120B vs Gemini 2.5 Pro (I/O Edition)
Compare GPT OSS 120B by OpenAI against Gemini 2.5 Pro (I/O Edition) by Google AI, in 12 community votes, gemini 2.5 pro (i/o edition) wins 100% of head-to-head duels, tested across 41 shared challenges. Updated April 2026.
Which is better, GPT OSS 120B or Gemini 2.5 Pro (I/O Edition)?
Gemini 2.5 Pro (I/O Edition) is the better choice overall, winning 100% of 12 blind community votes on Rival. GPT OSS 120B costs $0.18/M input tokens vs $1.25/M for Gemini 2.5 Pro (I/O Edition). Compare their real outputs side by side below.
Key Differences Between GPT OSS 120B and Gemini 2.5 Pro (I/O Edition)
GPT OSS 120B is made by openai while Gemini 2.5 Pro (I/O Edition) is from google. On pricing, GPT OSS 120B costs $0.18/M input tokens vs $1.25/M for Gemini 2.5 Pro (I/O Edition). In community voting, In 12 community votes, Gemini 2.5 Pro (I/O Edition) wins 100% of head-to-head duels.
In 12 community votes, Gemini 2.5 Pro (I/O Edition) wins 100% of head-to-head duels. Gemini 2.5 Pro (I/O Edition) leads in Image Generation, Reasoning. Based on blind community voting from the Rival open dataset of 12+ human preference judgments for this pair.
Pick Gemini 2.5 Pro (I/O Edition). In 12 blind votes, Gemini 2.5 Pro (I/O Edition) wins 100% of the time. That's not luck.
Gemini 2.5 Pro (I/O Edition) particularly excels in Image Generation, Reasoning. GPT OSS 120B is 13x 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.
