Gemini 2.5 Flash Preview 05-20 (thinking) vs GPT OSS 120B
Compare Gemini 2.5 Flash Preview 05-20 (thinking) by Google AI against GPT OSS 120B by OpenAI, context windows of 1.0M vs 131K, tested across 12 shared challenges. Updated April 2026.
Which is better, Gemini 2.5 Flash Preview 05-20 (thinking) or GPT OSS 120B?
Gemini 2.5 Flash Preview 05-20 (thinking) and GPT OSS 120B are both competitive models. Gemini 2.5 Flash Preview 05-20 (thinking) costs $0.15/M input tokens vs $0.18/M for GPT OSS 120B. Context windows: 1049K vs 131K tokens. Compare their real outputs side by side below.
Key Differences Between Gemini 2.5 Flash Preview 05-20 (thinking) and GPT OSS 120B
Gemini 2.5 Flash Preview 05-20 (thinking) is made by google while GPT OSS 120B is from openai. Gemini 2.5 Flash Preview 05-20 (thinking) has a 1049K token context window compared to GPT OSS 120B's 131K. On pricing, Gemini 2.5 Flash Preview 05-20 (thinking) costs $0.15/M input tokens vs $0.18/M for GPT OSS 120B.
No community votes yet. On paper, GPT OSS 120B has the edge — bigger model tier, newer.
GPT OSS 120B is 4.4x cheaper per token — worth considering if cost matters.
Style Comparison
GPT OSS 120B uses 27.6x more hedging
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.
