What is the difference between GPT OSS 120B and Mistral Small 4?

GPT OSS 120B is developed by OpenAI while Mistral Small 4 is developed by Mistral AI. GPT OSS 120B has a 131K token context window vs Mistral Small 4's 262K. These results are based on blind head-to-head voting across 53 challenges.

Which is better, GPT OSS 120B or Mistral Small 4?

Based on 2 community votes on Rival, GPT OSS 120B and Mistral Small 4 are closely matched with similar win rates. The better choice depends on your specific use case. Compare their real outputs side-by-side across 53 challenges to decide.

How much does GPT OSS 120B cost compared to Mistral Small 4?

GPT OSS 120B costs $0.18/M input tokens and Mistral Small 4 costs $0.15/M input tokens. Mistral Small 4 is $0.03/M cheaper per input. The more expensive model wins 50% of duels, so the premium may be justified by quality.

How are GPT OSS 120B vs Mistral Small 4 votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 2 votes have been collected for this pair across 53 challenges. All vote data is part of Rival's open dataset.

What is the difference between GPT OSS 120B and Mistral Small 4?

GPT OSS 120B is developed by OpenAI while Mistral Small 4 is developed by Mistral AI. GPT OSS 120B has a 131K token context window vs Mistral Small 4's 262K. These results are based on blind head-to-head voting across 53 challenges.

Which is better, GPT OSS 120B or Mistral Small 4?

Based on 2 community votes on Rival, GPT OSS 120B and Mistral Small 4 are closely matched with similar win rates. The better choice depends on your specific use case. Compare their real outputs side-by-side across 53 challenges to decide.

How much does GPT OSS 120B cost compared to Mistral Small 4?

GPT OSS 120B costs $0.18/M input tokens and Mistral Small 4 costs $0.15/M input tokens. Mistral Small 4 is $0.03/M cheaper per input. The more expensive model wins 50% of duels, so the premium may be justified by quality.

How are GPT OSS 120B vs Mistral Small 4 votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 2 votes have been collected for this pair across 53 challenges. All vote data is part of Rival's open dataset.

GPT OSS 120B vs Mistral Small 4: Which Is Better?

Updated Mar 2026

Our Verdict

Mistral Small 4Winner

GPT OSS 120BRunner-up

Votes are tied. Mistral Small 4 is newer and likely incorporates more recent improvements.

Too close to call

API pricing

Cost per 1M tokens

GPT OSS 120B

Input

$0.18

Output

$0.80

Mistral Small 4

Input

$0.15

1.2× cheaper

Output

$0.60

1.3× cheaper

Mistral Small 4 is cheaper on both — 1.2× input, 1.3× output

Writing DNA

Style Comparison

Similarity

75%

Mistral Small 4 uses 3.1x more lists

GPT OSS 120B

Mistral Small 4

52%Vocabulary50%

19wSentence Length18w

0.28Hedging0.58

7.4Bold9.0

1.8Lists5.6

0.15Emoji0.19

0.73Headings1.10

0.17Transitions0.12

Based on 21 + 23 text responses

Research

What we learned reading every model

GPT OSS 120B and Mistral Small 4 have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

GPT OSS 120B vs MiniMax M3New provider

Mistral Small 4 vs Pony AlphaNew provider

GPT OSS 120B vs Claude Opus 4New provider

Updated Mar 2026

Our Verdict

Mistral Small 4Winner

GPT OSS 120BRunner-up

Votes are tied. Mistral Small 4 is newer and likely incorporates more recent improvements.

Too close to call

API pricing

Cost per 1M tokens

GPT OSS 120B

Input

$0.18

Output

$0.80

Mistral Small 4

Input

$0.15

1.2× cheaper

Output

$0.60

1.3× cheaper

Mistral Small 4 is cheaper on both — 1.2× input, 1.3× output

Writing DNA

Style Comparison

Similarity

75%

Mistral Small 4 uses 3.1x more lists

GPT OSS 120B

Mistral Small 4

52%Vocabulary50%

19wSentence Length18w

0.28Hedging0.58

7.4Bold9.0

1.8Lists5.6

0.15Emoji0.19

0.73Headings1.10

0.17Transitions0.12

Based on 21 + 23 text responses

Research

What we learned reading every model

GPT OSS 120B and Mistral Small 4 have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

GPT OSS 120B vs MiniMax M3New provider

Mistral Small 4 vs Pony AlphaNew provider

GPT OSS 120B vs Claude Opus 4New provider