Gemini 3.1 Pro Preview vs Mistral Large 4
Mistral Large 4 leads Gemini 3.1 Pro Preview on coding, 56.4 to 32.3 on the Vibe Coding Index, and Mistral Large 4 costs 2.9x less per output token ($4.18 vs $12.00 per million). Updated October 22, 2026; 69 benchmarks have a result for both.
vs boards won of 69 shared, 1 tied
Gemini 3.1 Pro Preview or Mistral Large 4: which to pick
Pick Mistral Large 4 for coding: it scores 56.4 on the Vibe Coding Index against 32.3 for Gemini 3.1 Pro Preview.
Pick Gemini 3.1 Pro Preview for work measured by IOI (Vals AI) or SciCode, where it leads.
Model AGemini 3.1 Pro PreviewGoogle32.3/1004 independent benchmarks$0.99 per solved taskModel BMistral Large 4Mistral AI56.4/1005 independent benchmarksNo cost per solved task
- Shared results
- 69
- Gemini 3.1 Pro Preview only
- 64
- Mistral Large 4 only
- 12
- Like-for-like categories
- 8 of 9
Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.
Which one for your work
Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.
Coding
Vibe Coding Index, six public coding benchmarks
Mistral Large 4
Mistral Large 4 scores 56.4 against 32.3.
4 and 5 benchmarks behind the scores
Intelligence
AA Intelligence Index
Mistral Large 4
Mistral Large 4 leads, 38.4 against 29.7.
Same board, both measured
Agentic work
AA Agentic Index
No call
Only Gemini 3.1 Pro Preview has a AA Agentic Index result, 8.2.
Directional only
Reasoning
GPQA Diamond
No call
Only Gemini 3.1 Pro Preview has a GPQA Diamond result, 95.5%.
Directional only
Math
AIME
No call
Only Gemini 3.1 Pro Preview has a AIME result, 98.1%.
Directional only
Knowledge
MMLU Pro
No call
Only Gemini 3.1 Pro Preview has a MMLU Pro result, 91.0%.
Directional only
Web design
Design Arena: websites
Mistral Large 4
Mistral Large 4 leads, 1257 against 1233.
Same board, both measured
Long documents
Listed context window
No call
Both take 1.05M tokens.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Mistral Large 4
Gemini 3.1 Pro Preview $0.0080, Mistral Large 4 $0.0034 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
No call
Only Gemini 3.1 Pro Preview has the number, $0.99.
Directional only
At a glance
- Coding index
- Gemini 3.1 Pro Preview 32.3 from 4 benchmarks, Mistral Large 4 56.4 from 5 benchmarks.
- Widest category
- Knowledge, 17.1 points apart on average over 6 shared benchmarks.
- Widest single gap
- SimpleQA Verified: Gemini 3.1 Pro Preview 73.5% against Mistral Large 4 20.0%, 53.5 points apart on a 0 to 100 scale.
- Output price
- Gemini 3.1 Pro Preview $12.00 against Mistral Large 4 $4.18 per million output tokens, 2.9x apart.
- Context window
- Both take 1.05M tokens.
Benchmark by benchmark
First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.
| Category | Gemini 3.1 Pro Preview | Bars | Mistral Large 4 | Ties |
|---|---|---|---|---|
| Coding | 5 | 7 | ||
| Intelligence | 0 | 1 | ||
| Agentic work | 0 | 5 | ||
| Reasoning | 9 | 0 | ||
| Math | 4 | 1 | 1 tie | |
| Knowledge | 6 | 0 | ||
| Web design | 2 | 6 | ||
| General | 20 | 2 | ||
| All shared boards | 46 | 22 | 1 tie |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index57
| Benchmark | Gemini 3.1 Pro Preview | Mistral Large 4 | Leader |
|---|---|---|---|
| LiveBench coding | Not measured | 60.0% | Only Mistral Large 4 measured |
| LMArena WebDev | 1447 | 1543 | Mistral Large 4 |
| AA Coding Index | 68.8 | Not measured | Only Gemini 3.1 Pro Preview measured |
| LiveCodeBench (Vals AI) | 88.5% | Not measured | Only Gemini 3.1 Pro Preview measured |
| SWE-bench Verified (Vals AI) | 78.8% | Not measured | Only Gemini 3.1 Pro Preview measured |
| Terminal-Bench 4 (Vals AI) | 2.5% | 27.8% | Mistral Large 4 |
| Vibe Code Bench (Vals AI) | 32.0% | 78.4% | Mistral Large 4 |
| Code migration (Vals AI) | 17.3% | 30.6% | Mistral Large 4 |
| ProgramBench (Vals AI) | 0.0% | Not measured | Only Gemini 3.1 Pro Preview measured |
| IOI (Vals AI) | 51.8% | 45.3% | Gemini 3.1 Pro Preview |
| Terminal-Bench 2.1 (Vals AI) | 70.8% | Not measured | Only Gemini 3.1 Pro Preview measured |
| SWE-bench Multimodal (Vals AI) | Not measured | 33.1% | Only Mistral Large 4 measured |
| Vibe Code Bench 1-100 (Vals AI) | 6.7% | 14.3% | Mistral Large 4 |
| SciCode | 58.7% | 54.2% | Gemini 3.1 Pro Preview |
| Terminal-Bench Hard (Artificial Analysis run) | 53.8% | Not measured | Only Gemini 3.1 Pro Preview measured |
| Terminal-Bench | 80.2% | Not measured | Only Gemini 3.1 Pro Preview measured |
| FrontierCode | Not measured | 39.4% | Only Mistral Large 4 measured |
| GSO-Bench | 22.6% | Not measured | Only Gemini 3.1 Pro Preview measured |
| WeirdML | 72.1% | Not measured | Only Gemini 3.1 Pro Preview measured |
| MirrorCode | 8.9% | Not measured | Only Gemini 3.1 Pro Preview measured |
| ALE-Bench | 1160.6 | 1213.2 | Mistral Large 4 |
| LMArena Text: coding | 1484 | 1478 | Gemini 3.1 Pro Preview |
| LMArena Text: software and IT | 1487 | 1467 | Gemini 3.1 Pro Preview |
| LMArena WebDev: React | 1438 | 1559 | Mistral Large 4 |
| LMArena WebDev: HTML | 1490 | 1487 | Gemini 3.1 Pro Preview |
| LMArena WebDev: from an image | 1481 | Not measured | Only Gemini 3.1 Pro Preview measured |
| SciCode | 14.3% | Not measured | Only Gemini 3.1 Pro Preview measured |
| Neither model has a result on the other 12 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | Gemini 3.1 Pro Preview | Mistral Large 4 | Leader |
|---|---|---|---|
| AA Intelligence Index | 29.7 | 38.4 | Mistral Large 4 |
| Epoch Capabilities Index | Not measured | 150.0 | Only Mistral Large 4 measured |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index05
| Benchmark | Gemini 3.1 Pro Preview | Mistral Large 4 | Leader |
|---|---|---|---|
| AA Agentic Index | 8.2 | Not measured | Only Gemini 3.1 Pro Preview measured |
| Design Arena: agents building web apps | 1125 | Not measured | Only Gemini 3.1 Pro Preview measured |
| Design Arena: agents building full-stack apps | 1068 | Not measured | Only Gemini 3.1 Pro Preview measured |
| Design Arena: agents building mobile apps | 1094 | Not measured | Only Gemini 3.1 Pro Preview measured |
| Design Arena: agents building Android apps | 1049 | Not measured | Only Gemini 3.1 Pro Preview measured |
| Design Arena: agents building Godot games | 1236 | Not measured | Only Gemini 3.1 Pro Preview measured |
| Design Arena: agents building games | 1113 | Not measured | Only Gemini 3.1 Pro Preview measured |
| Design Arena: HTML slides | 1103 | Not measured | Only Gemini 3.1 Pro Preview measured |
| Design Arena: PowerPoint slides | 1041 | Not measured | Only Gemini 3.1 Pro Preview measured |
| LiveBench research | Not measured | 28.1% | Only Mistral Large 4 measured |
| LiveBench browser | Not measured | 8.0% | Only Mistral Large 4 measured |
| LiveBench long agentic | Not measured | 11.8% | Only Mistral Large 4 measured |
| SREBench (Vals AI) | 0.0% | Not measured | Only Gemini 3.1 Pro Preview measured |
| Finance Agent (Vals AI) | 43.0% | 54.7% | Mistral Large 4 |
| Tax Agent Bench (Vals AI) | 9.3% | 30.4% | Mistral Large 4 |
| Legal Research Bench (Vals AI) | 20.7% | 31.7% | Mistral Large 4 |
| Harvey's Legal Agent Benchmark (Vals AI) | Not measured | 17.5% | Only Mistral Large 4 measured |
| Excel Modeling Benchmark (Vals AI) | 52.6% | 56.2% | Mistral Large 4 |
| BioMysteryBench (Vals AI) | 60.0% | 67.0% | Mistral Large 4 |
| Terminal-Bench-Science (Vals AI) | 1.4% | Not measured | Only Gemini 3.1 Pro Preview measured |
| Vals Science Index | 27.4% | Not measured | Only Gemini 3.1 Pro Preview measured |
| τ²-Bench Telecom | 95.6% | Not measured | Only Gemini 3.1 Pro Preview measured |
| APEX-Agents | 35.1% | Not measured | Only Gemini 3.1 Pro Preview measured |
| METR time horizons | 77.0% | Not measured | Only Gemini 3.1 Pro Preview measured |
| BALROG | 57.0% | Not measured | Only Gemini 3.1 Pro Preview measured |
| DeepResearch Bench | 47.8% | Not measured | Only Gemini 3.1 Pro Preview measured |
| PostTrainBench | 22.0% | Not measured | Only Gemini 3.1 Pro Preview measured |
| Vending-Bench 2 | $911 | Not measured | Only Gemini 3.1 Pro Preview measured |
| Neither model has a result on the other 13 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index90
| Benchmark | Gemini 3.1 Pro Preview | Mistral Large 4 | Leader |
|---|---|---|---|
| GPQA Diamond | 95.5% | Not measured | Only Gemini 3.1 Pro Preview measured |
| LiveBench reasoning | Not measured | 83.9% | Only Mistral Large 4 measured |
| MysteryMechanism (Vals AI) | 20.7% | 12.2% | Gemini 3.1 Pro Preview |
| MMMU Pro (Vals AI) | 88.2% | Not measured | Only Gemini 3.1 Pro Preview measured |
| GPQA Diamond (Artificial Analysis run) | 94.1% | Not measured | Only Gemini 3.1 Pro Preview measured |
| Humanity's Last Exam (Artificial Analysis run) | 47.0% | 35.0% | Gemini 3.1 Pro Preview |
| GPQA Diamond (Epoch AI run) | 94.4% | 88.1% | Gemini 3.1 Pro Preview |
| ARC-AGI | 98.0% | Not measured | Only Gemini 3.1 Pro Preview measured |
| ARC-AGI-2 | 77.1% | Not measured | Only Gemini 3.1 Pro Preview measured |
| SimpleBench | 79.6% | Not measured | Only Gemini 3.1 Pro Preview measured |
| Chess puzzles | 51.0% | 33.0% | Gemini 3.1 Pro Preview |
| Mystery game puzzles | 34.0% | 17.0% | Gemini 3.1 Pro Preview |
| EBR-bench | 14.3% | Not measured | Only Gemini 3.1 Pro Preview measured |
| LMArena Text: hard prompts | 1485 | 1444 | Gemini 3.1 Pro Preview |
| LMArena Text: expert | 1483 | 1444 | Gemini 3.1 Pro Preview |
| LMArena Text: hard prompts in English | 1480 | 1442 | Gemini 3.1 Pro Preview |
| LMArena Vision: diagrams | 1311 | 1288 | Gemini 3.1 Pro Preview |
| LMArena Vision: homework | 1316 | Not measured | Only Gemini 3.1 Pro Preview measured |
| Neither model has a result on the other 4 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index41
| Benchmark | Gemini 3.1 Pro Preview | Mistral Large 4 | Leader |
|---|---|---|---|
| AIME | 98.1% | Not measured | Only Gemini 3.1 Pro Preview measured |
| OTIS Mock AIME | 95.6% | 98.3% | Mistral Large 4 |
| FrontierMath, tiers 1 to 3 | 59.6% | 58.6% | Gemini 3.1 Pro Preview |
| FrontierMath, tier 4 | 26.8% | 26.8% | Tie |
| ProofBench | 26.0% | 10.0% | Gemini 3.1 Pro Preview |
| LMArena Text: math | 1486 | 1469 | Gemini 3.1 Pro Preview |
| LMArena Text: mathematical work | 1478 | 1462 | Gemini 3.1 Pro Preview |
| Neither model has a result on the other 6 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index60
| Benchmark | Gemini 3.1 Pro Preview | Mistral Large 4 | Leader |
|---|---|---|---|
| MMLU Pro | 91.0% | Not measured | Only Gemini 3.1 Pro Preview measured |
| LegalBench (Vals AI) | 87.4% | Not measured | Only Gemini 3.1 Pro Preview measured |
| CaseLaw (Vals AI) | 64.8% | Not measured | Only Gemini 3.1 Pro Preview measured |
| CorpFin (Vals AI) | 64.5% | Not measured | Only Gemini 3.1 Pro Preview measured |
| TaxEval (Vals AI) | 72.9% | Not measured | Only Gemini 3.1 Pro Preview measured |
| MortgageTax (Vals AI) | 69.4% | Not measured | Only Gemini 3.1 Pro Preview measured |
| MedQA (Vals AI) | 96.4% | Not measured | Only Gemini 3.1 Pro Preview measured |
| MedCode (Vals AI) | 59.1% | 40.7% | Gemini 3.1 Pro Preview |
| SimpleQA Verified | 73.5% | 20.0% | Gemini 3.1 Pro Preview |
| LMArena Text: science | 1497 | 1448 | Gemini 3.1 Pro Preview |
| LMArena Text: medicine and healthcare | 1486 | 1433 | Gemini 3.1 Pro Preview |
| LMArena Text: legal and government | 1487 | 1425 | Gemini 3.1 Pro Preview |
| LMArena Text: business and finance | 1459 | 1439 | Gemini 3.1 Pro Preview |
| FACTS Benchmark Suite | 67.4% | Not measured | Only Gemini 3.1 Pro Preview measured |
| Neither model has a result on the other 4 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index26
| Benchmark | Gemini 3.1 Pro Preview | Mistral Large 4 | Leader |
|---|---|---|---|
| Design Arena: websites | 1233 | 1257 | Mistral Large 4 |
| Design Arena: UI components | 1224 | 1272 | Mistral Large 4 |
| Design Arena: game dev | 1202 | 1225 | Mistral Large 4 |
| Design Arena: data viz | 1209 | 1275 | Mistral Large 4 |
| Design Arena: 3D | 1234 | 1252 | Mistral Large 4 |
| Design Arena: all code categories | 1231 | 1259 | Mistral Large 4 |
| Design Arena: SVG | 1285 | 1232 | Gemini 3.1 Pro Preview |
| Design Arena: ASCII art | 1270 | 1202 | Gemini 3.1 Pro Preview |
| LiveBench design | Not measured | 65.6% | Only Mistral Large 4 measured |
GeneralLike-for-likePublic boards, shown as published, kept out of the index202
| Benchmark | Gemini 3.1 Pro Preview | Mistral Large 4 | Leader |
|---|---|---|---|
| LiveBench data analysis | Not measured | 76.5% | Only Mistral Large 4 measured |
| Public Benefits Bench (Vals AI) | 53.8% | Not measured | Only Gemini 3.1 Pro Preview measured |
| SAGE (Vals AI) | 48.7% | Not measured | Only Gemini 3.1 Pro Preview measured |
| MedScribe (Vals AI) | 76.1% | 80.4% | Mistral Large 4 |
| Vals Multimodal Index | 56.1% | Not measured | Only Gemini 3.1 Pro Preview measured |
| IFBench | 77.1% | Not measured | Only Gemini 3.1 Pro Preview measured |
| Long context reasoning (AA-LCR) | 82.0% | 81.3% | Gemini 3.1 Pro Preview |
| DTBench | 97.1% | 88.2% | Gemini 3.1 Pro Preview |
| LMCA | 53.8% | 35.8% | Gemini 3.1 Pro Preview |
| CL-bench | 20.8% | Not measured | Only Gemini 3.1 Pro Preview measured |
| Surface Evolver Bench | Not measured | 28.1% | Only Mistral Large 4 measured |
| Furniture assembly | 26.7% | 20.8% | Gemini 3.1 Pro Preview |
| ExploitBench | 26.1% | Not measured | Only Gemini 3.1 Pro Preview measured |
| CL-bench Life | 16.9% | Not measured | Only Gemini 3.1 Pro Preview measured |
| LMArena Text | 1480 | 1431 | Gemini 3.1 Pro Preview |
| LMArena Text: instruction following | 1466 | 1422 | Gemini 3.1 Pro Preview |
| LMArena Text: creative writing | 1482 | 1363 | Gemini 3.1 Pro Preview |
| LMArena Vision | 1296 | 1272 | Gemini 3.1 Pro Preview |
| LMArena Text: English | 1478 | 1433 | Gemini 3.1 Pro Preview |
| LMArena Text: non-English | 1476 | 1422 | Gemini 3.1 Pro Preview |
| LMArena Text: Chinese | 1527 | 1492 | Gemini 3.1 Pro Preview |
| LMArena Text: German | 1490 | Not measured | Only Gemini 3.1 Pro Preview measured |
| LMArena Text: Japanese | 1491 | 1415 | Gemini 3.1 Pro Preview |
| LMArena Text: Korean | 1455 | Not measured | Only Gemini 3.1 Pro Preview measured |
| LMArena Text: French | 1487 | 1492 | Mistral Large 4 |
| LMArena Text: Spanish | 1481 | 1455 | Gemini 3.1 Pro Preview |
| LMArena Text: Russian | 1497 | 1417 | Gemini 3.1 Pro Preview |
| LMArena Text: Polish | 1498 | Not measured | Only Gemini 3.1 Pro Preview measured |
| LMArena Text: multi-turn | 1487 | 1435 | Gemini 3.1 Pro Preview |
| LMArena Text: longer queries | 1482 | 1428 | Gemini 3.1 Pro Preview |
| LMArena Text: writing and language | 1481 | 1386 | Gemini 3.1 Pro Preview |
| LMArena Text: entertainment and media | 1465 | 1378 | Gemini 3.1 Pro Preview |
| LMArena Vision: English | 1287 | 1283 | Gemini 3.1 Pro Preview |
| LMArena Vision: Chinese | 1364 | Not measured | Only Gemini 3.1 Pro Preview measured |
| LMArena Vision: reading text | 1304 | 1284 | Gemini 3.1 Pro Preview |
| LMArena Vision: humor | 1322 | Not measured | Only Gemini 3.1 Pro Preview measured |
| LMArena Vision: captioning | 1345 | Not measured | Only Gemini 3.1 Pro Preview measured |
| LMArena Vision: recognizing things | 1330 | Not measured | Only Gemini 3.1 Pro Preview measured |
| LMArena Vision: creative writing | 1324 | Not measured | Only Gemini 3.1 Pro Preview measured |
| LMArena Document | 1444 | Not measured | Only Gemini 3.1 Pro Preview measured |
| Neither model has a result on the other 6 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Gemini 3.1 Pro Preview | Mistral Large 4 | Leader |
|---|---|---|---|
| Neither model has a result on 5 boards here | |||
What each workload costs
Three fixed token mixes at each model's listed price, so per-token rates become a bill.
Chat turn
1K input + 500 output tokens
Gemini 3.1 Pro Preview$0.0080Fits in one request
Mistral Large 4$0.0034Fits in one request
Mistral Large 4 costs less
Repository review
50K input + 3K output tokens
Gemini 3.1 Pro Preview$0.136Fits in one request
Mistral Large 4$0.081Fits in one request
Mistral Large 4 costs less
Agent loop
200K input + 10K output tokens
Gemini 3.1 Pro Preview$0.520Fits in one request
Mistral Large 4$0.314Fits in one request
Mistral Large 4 costs less
Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.
Specification differences
The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.
| Specification | Google Gemini 3.1 Pro Preview | Mistral Large 4 |
|---|---|---|
| Maker | Mistral AI | |
| Weights | No public weights listed | No public weights listed |
| Released | February 19, 2026 | October 6, 2026 |
| Context window | 1.05M | 1.05M |
| Input $/Mtok | $2.00 | $1.36 |
| Output $/Mtok | $12.00 | $4.18 |
| Coding index | 32.3 | 56.4 |
| Independent measurements behind it | 4 | 5 |
| Cost per solved task | $0.99 | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Gemini 3.1 Pro Preview better than Mistral Large 4 for coding?
Pick Mistral Large 4 for coding: it scores 56.4 on the Vibe Coding Index against 32.3 for Gemini 3.1 Pro Preview. Pick Gemini 3.1 Pro Preview for work measured by IOI (Vals AI) or SciCode, where it leads.
Which is cheaper, Gemini 3.1 Pro Preview or Mistral Large 4?
Gemini 3.1 Pro Preview costs $2.00 per million input tokens and $12.00 per million output tokens; Mistral Large 4 costs $1.36 and $4.18. Cost per solved task is known for Gemini 3.1 Pro Preview only.
Which has the bigger context window, Gemini 3.1 Pro Preview or Mistral Large 4?
Neither: both take 1.05M tokens.
How many benchmarks is the Gemini 3.1 Pro Preview vs Mistral Large 4 comparison based on?
69 benchmarks have a result for both models as of October 22, 2026. Gemini 3.1 Pro Preview's coding index rests on 4 independent benchmarks and Mistral Large 4's on 5. Where only one model has a result, the page says so instead of naming a winner.