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Mistral · mid

Is Mistral Medium 3.1 good?

Mistral Medium 3.1 has been tested across 21 task areas. It's strongest at landing pages and weakest at customer support. It's a mid-priced option ($2.4/1M tokens).

Top-3 finishes
21/22
Task areas tested
$2.4
Per 1M tokens
Slow
Typical speed

Our take

Mistral: Mistral Medium 3.1 is a mid-tier model that we tested across 21 task areas. It performs best at Landing Pages, and is weakest at Customer Support.

Strengths

Clarity Concision Tone Code quality Edge case handling Risk detection

Weak spots

Usefulness Constraint adherence Tone control Practicality Commercial judgement

How Mistral Medium 3.1 ranks, task by task

Rank is the position in each field; Rating is the absolute quality bar. A model can be rated "Excellent" yet sit mid-table when the whole field is strong — and vice-versa.

Task area Rank
Landing Pages #11 of 56
Frontend & Landing Pages #24 of 93
Product & Project Management #20 of 44
Translation & Localization #21 of 44
Summarization & Meeting Notes #28 of 44
Creative & Comedy #30 of 44
Knowledge & Docs #64 of 94
Data & Analytics #53 of 69
AI Strategy #43 of 50
Coding #45 of 52
Executive Assistant #44 of 50
Legal & HR #40 of 44
Content & Brand #46 of 50
Chef / Home Cooking #47 of 50
Investor & Pitch #47 of 50
Presentations & Decks #42 of 44
Sales #42 of 44
Training & Education #42 of 44
Structured Output #42 of 43
Customer Support #43 of 43
Research & Competitive Analysis #44 of 44

Industry benchmarks

Standardized third-party scores, shown for context — these are independent of our real-task tests.

Design Arena — human preference (avg Elo 1136)

3d 1161 svg 1050 dataviz 1191 gamedev 1141 website 1177 asciiart 1044 uicomponent 1154 codecategories 1171

Headline vs. real-world

Source: Artificial Analysis (artificialanalysis.ai) via OpenRouter (openrouter.ai/rankings). (2026-06-29) · Source: Design Arena (www.designarena.ai) via OpenRouter (openrouter.ai/rankings). (2026-06-29)

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Frequently asked

Is Mistral Medium 3.1 any good?

Mistral Medium 3.1 places top-3 in 0 of 21 task areas we benchmarked. It performs best at Landing Pages.

What is Mistral Medium 3.1 best at?

Its strongest task areas are Landing Pages, Frontend & Landing Pages, Product & Project Management.

Is there a cheaper alternative to Mistral Medium 3.1?

DeepSeek V3.2 is 76% cheaper and stays competitive on quality across our benchmarks.

How we test & rank

Each model is scored on real tasks across 21 task areas by an LLM judge with deterministic checks. "Percentile" is this model's standing within each area's field; the cross-area figures are rank-based so quality and Elo scores are never mixed.

This page is Spring Prompt, running

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.
Experiment · Cold outreach email

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