Mistral Nemo vs GPT OSS 120B

Compare Mistral Nemo by Mistral AI against GPT OSS 120B by OpenAI, context windows of 128K vs 131K, tested across 18 shared challenges. Updated April 2026.

Which is better, Mistral Nemo or GPT OSS 120B?

Mistral Nemo and GPT OSS 120B are both competitive models. Mistral Nemo costs $0.03/M input tokens vs $0.18/M for GPT OSS 120B. Context windows: 128K vs 131K tokens. Compare their real outputs side by side below.

Key Differences Between Mistral Nemo and GPT OSS 120B

Mistral Nemo is made by mistral while GPT OSS 120B is from openai. Mistral Nemo has a 128K token context window compared to GPT OSS 120B's 131K. On pricing, Mistral Nemo costs $0.03/M input tokens vs $0.18/M for GPT OSS 120B.

Our Verdict
GPT OSS 120B
GPT OSS 120B
Mistral Nemo
Mistral NemoRunner-up

No community votes yet. On paper, GPT OSS 120B has the edge — bigger model tier, newer, major provider backing.

Mistral Nemo is 11x cheaper per token — worth considering if cost matters.

Slight edge
Writing DNA

Style Comparison

Similarity
94%

GPT OSS 120B uses 15.4x more emoji

Mistral Nemo
GPT OSS 120B
46%Vocabulary52%
19wSentence Length19w
1.08Hedging0.28
3.6Bold7.4
8.0Lists1.8
0.00Emoji0.15
0.00Headings0.73
0.17Transitions0.17
Based on 10 + 21 text responses
vs

Ask them anything yourself

Mistral NemoGPT OSS 120B

Some models write identically. You are paying for the brand.

178 models fingerprinted across 32 writing dimensions. Free research.

Model Similarity Index

185x

price gap between models that write identically

178

models

12

clone pairs

32

dimensions

Devstral M / S
95.7%
Qwen3 Coder / Flash
95.6%
GPT-5.4 / Mini
93.3%

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
Free preview13 of 58 slides
FAQ

Common questions