What is the difference between Llama 3.1 405B and Mistral Medium 3?

Llama 3.1 405B is developed by Meta AI while Mistral Medium 3 is developed by Mistral AI. Llama 3.1 405B has a 128K token context window vs Mistral Medium 3's 131K. You can compare their actual outputs across 12 challenges on Rival to see how they differ in practice.

Which is better, Llama 3.1 405B or Mistral Medium 3?

It depends on your use case. Llama 3.1 405B and Mistral Medium 3 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 12 challenges so you can judge which fits your needs best.

How much does Llama 3.1 405B cost compared to Mistral Medium 3?

Llama 3.1 405B costs $2.7/M input tokens and Mistral Medium 3 costs $0.4/M input tokens. Mistral Medium 3 is $2.30/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare Llama 3.1 405B and Mistral Medium 3 on Rival?

This page shows a side-by-side comparison of Llama 3.1 405B and Mistral Medium 3 across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

What is the difference between Llama 3.1 405B and Mistral Medium 3?

Llama 3.1 405B is developed by Meta AI while Mistral Medium 3 is developed by Mistral AI. Llama 3.1 405B has a 128K token context window vs Mistral Medium 3's 131K. You can compare their actual outputs across 12 challenges on Rival to see how they differ in practice.

Which is better, Llama 3.1 405B or Mistral Medium 3?

It depends on your use case. Llama 3.1 405B and Mistral Medium 3 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 12 challenges so you can judge which fits your needs best.

How much does Llama 3.1 405B cost compared to Mistral Medium 3?

Llama 3.1 405B costs $2.7/M input tokens and Mistral Medium 3 costs $0.4/M input tokens. Mistral Medium 3 is $2.30/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare Llama 3.1 405B and Mistral Medium 3 on Rival?

This page shows a side-by-side comparison of Llama 3.1 405B and Mistral Medium 3 across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Updated May 2025

Llama 3.1 405BvsMistral Medium 3

Mistral Medium 3 is cheaper than Llama 3.1 405B at $0.4/M vs $2.7/M input tokens.

Llama 3.1 405B and Mistral Medium 3 compared across 12 shared prompts
Spec	Llama 3.1 405B	Mistral Medium 3
Input price	$2.7/M tokens	$0.4/M tokens
Output price	$3.1/M tokens	$2/M tokens
Context window	128K tokens	131K tokens
Released	Jul 2024	May 2025
HumanEval	89.0%	92.1%

Our Verdict

Llama 3.1 405B

Mistral Medium 3Runner-up

Not enough votes to call it. On the specs, Llama 3.1 405B has the edge: bigger model tier, major provider backing.

Too close to call

What do Llama 3.1 405B and Mistral Medium 3 say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

Llama 3.1 405B

Input

$2.70

Output

$3.10

Mistral Medium 3

Input

$0.40

6.8× cheaper

Output

$2.00

1.6× cheaper

Mistral Medium 3 is cheaper on both — 6.8× input, 1.6× output

Writing DNA

Style Comparison

Similarity

34%

Mistral Medium 3 uses 859.1x more bold

Llama 3.1 405B

Mistral Medium 3

56%Vocabulary57%

15wSentence Length17w

0.41Hedging0.73

0.0Bold8.6

1.9Lists6.5

0.03Emoji0.06

0.00Headings1.18

0.16Transitions0.15

Based on 5 + 15 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Llama 3.1 405B vs MiniMax M3New provider

Llama 3.1 405B vs Ox AlphaNew provider

Llama 3.1 405B vs Claude Opus 4New provider

Llama 3.1 405B vs Claude Opus 4.1New provider

Llama 3.1 405B vs Nemotron 3 UltraNew provider

Llama 3.1 405B vs Nemotron 3.5 Content SafetyNew provider

Llama 3.1 405B vs Nemotron 3.5 LightningNew provider

Llama 3.1 405B vs NVIDIA Nemotron Nano 9B V2New provider

Updated May 2025

Llama 3.1 405BvsMistral Medium 3

Mistral Medium 3 is cheaper than Llama 3.1 405B at $0.4/M vs $2.7/M input tokens.

Llama 3.1 405B and Mistral Medium 3 compared across 12 shared prompts
Spec	Llama 3.1 405B	Mistral Medium 3
Input price	$2.7/M tokens	$0.4/M tokens
Output price	$3.1/M tokens	$2/M tokens
Context window	128K tokens	131K tokens
Released	Jul 2024	May 2025
HumanEval	89.0%	92.1%

Our Verdict

Llama 3.1 405B

Mistral Medium 3Runner-up

Not enough votes to call it. On the specs, Llama 3.1 405B has the edge: bigger model tier, major provider backing.

Too close to call

What do Llama 3.1 405B and Mistral Medium 3 say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

Llama 3.1 405B

Input

$2.70

Output

$3.10

Mistral Medium 3

Input

$0.40

6.8× cheaper

Output

$2.00

1.6× cheaper

Mistral Medium 3 is cheaper on both — 6.8× input, 1.6× output

Writing DNA

Style Comparison

Similarity

34%

Mistral Medium 3 uses 859.1x more bold

Llama 3.1 405B

Mistral Medium 3

56%Vocabulary57%

15wSentence Length17w

0.41Hedging0.73

0.0Bold8.6

1.9Lists6.5

0.03Emoji0.06

0.00Headings1.18

0.16Transitions0.15

Based on 5 + 15 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Llama 3.1 405B vs MiniMax M3New provider

Llama 3.1 405B vs Ox AlphaNew provider

Llama 3.1 405B vs Claude Opus 4New provider

Llama 3.1 405B vs Claude Opus 4.1New provider

Llama 3.1 405B vs Nemotron 3 UltraNew provider

Llama 3.1 405B vs Nemotron 3.5 Content SafetyNew provider

Llama 3.1 405B vs Nemotron 3.5 LightningNew provider

Llama 3.1 405B vs NVIDIA Nemotron Nano 9B V2New provider