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Google Gemini 3 Flash Preview VS Mistral Mistral Medium 3.1

Gemini 3 Flash Preview vs Mistral Medium 3.1: which wins at real work?

22 task areas · same graded test runs · rank comparison only, so 0–100 and Elo collections never mix raw scores.

Gemini 3 Flash Preview wins 19 of 22 task areas we tested; Mistral Medium 3.1 takes 3. Mistral Medium 3.1 costs 1.5× less per token ($2.4 vs $3.5 per 1M).

19
Task areas won
3
60
Avg percentile
23
1
Top-3 finishes
0
$3.5
Price / 1M tokens
$2.4
Google
Provider
Mistral

Mistral Medium 3.1 costs 1.5× less per token ($2.4 vs $3.5 per 1M).

Task by task

Task area Gemini 3 Flash Preview Mistral Medium 3.1 Winner
RAG, Safety & Grounding #13 / 113
Excellent
#111 / 113
Strong
Gemini 3 Flash Preview
Coding #22 / 115
Strong
#108 / 115
Needs editing
Gemini 3 Flash Preview
AI Strategy #38 / 126
Strong
#120 / 126
Usable
Gemini 3 Flash Preview
Chef / Home Cooking #39 / 126
Usable
#116 / 126
Needs editing
Gemini 3 Flash Preview
Customer Support #34 / 113
Strong
#110 / 113
Needs editing
Gemini 3 Flash Preview
Content & Brand #39 / 124
Strong
#110 / 124
Needs editing
Gemini 3 Flash Preview
Sales #35 / 110
Usable
#92 / 110
Usable
Gemini 3 Flash Preview
Structured Output #34 / 113
Excellent
#91 / 113
Strong
Gemini 3 Flash Preview
Presentations & Decks #52 / 110
Excellent
#105 / 110
Usable
Gemini 3 Flash Preview
Creative & Comedy #51 / 110 #100 / 110 Gemini 3 Flash Preview
Data & Analytics #47 / 110
Excellent
#87 / 110
Excellent
Gemini 3 Flash Preview
Training & Education #11 / 110
Excellent
#47 / 110
Excellent
Gemini 3 Flash Preview
Frontend & Landing Pages #1 / 109
Usable
#35 / 109
Needs editing
Gemini 3 Flash Preview
Research & Competitive Analysis #71 / 110
Usable
#105 / 110
Weak
Gemini 3 Flash Preview
Knowledge & Docs #49 / 110
Usable
#77 / 110
Usable
Gemini 3 Flash Preview
Landing Pages #35 / 72
Strong
#63 / 72
Usable
Gemini 3 Flash Preview
Legal & HR #47 / 110
Excellent
#70 / 110
Strong
Gemini 3 Flash Preview
Summarization & Meeting Notes #61 / 110
Excellent
#39 / 110
Excellent
Mistral Medium 3.1
Product & Project Management #69 / 110
Strong
#50 / 110
Strong
Mistral Medium 3.1
Investor & Pitch #47 / 66
Usable
#65 / 66
Needs editing
Gemini 3 Flash Preview
Translation & Localization #67 / 110
Excellent
#53 / 110
Excellent
Mistral Medium 3.1
Executive Assistant #92 / 112
Usable
#94 / 112
Usable
Gemini 3 Flash Preview

Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.

Frequently asked

Is Gemini 3 Flash Preview better than Mistral Medium 3.1?

Across 22 task areas we benchmarked, Gemini 3 Flash Preview ranks higher in 19 and Mistral Medium 3.1 in 3.

Which is cheaper, Gemini 3 Flash Preview or Mistral Medium 3.1?

Mistral Medium 3.1 costs 1.5× less per token ($2.4 vs $3.5 per 1M).

What is Gemini 3 Flash Preview better at?

Gemini 3 Flash Preview out-ranks Mistral Medium 3.1 at RAG, Safety & Grounding, Coding, AI Strategy.

What is Mistral Medium 3.1 better at?

Mistral Medium 3.1 out-ranks Gemini 3 Flash Preview at Summarization & Meeting Notes, Product & Project Management, Translation & Localization.

Full Gemini 3 Flash Preview review → Full Mistral Medium 3.1 review → Full model leaderboard →

More comparisons

This page is Spring Prompt, running in public

We just did this for every model. Do it for your prompt.

The rankings above come from running real tasks through real models and scoring every output. Spring Prompt is that same engine — pointed at your prompt, your test cases, and your definition of good.

  • Generate test cases from your prompt — no eval set required to start.
  • Compare models side by side with quality, cost and latency in one matrix.
  • Optimise the winner until the scores say it's ready to ship.
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Prompt × model results

12 test cases · 3 evals
Claude Opus
GPT-5
Gemini
v1
7.1
6.8
7.4
v2
8.3
7.9
8.0
v3
9.2
8.6
8.4
Best combo: v3 × Claude Opus
9.2 quality · $0.004/run · 1.8s