GPT OSS 120B vs Grok 3 Mini Beta
Compare GPT OSS 120B by OpenAI against Grok 3 Mini Beta by xAI, context windows of 131K vs 131K, tested across 13 shared challenges. Updated April 2026.
Which is better, GPT OSS 120B or Grok 3 Mini Beta?
GPT OSS 120B and Grok 3 Mini Beta are both competitive models. GPT OSS 120B costs $0.18/M input tokens vs $0.4/M for Grok 3 Mini Beta. Context windows: 131K vs 131K tokens. Compare their real outputs side by side below.
Key Differences Between GPT OSS 120B and Grok 3 Mini Beta
GPT OSS 120B is made by openai while Grok 3 Mini Beta is from xai. GPT OSS 120B has a 131K token context window compared to Grok 3 Mini Beta's 131K. On pricing, GPT OSS 120B costs $0.18/M input tokens vs $0.4/M for Grok 3 Mini Beta.
No community votes yet. On paper, GPT OSS 120B has the edge — bigger model tier, newer.
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.
