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Grok 4.6 vs Mistral Medium 3.5

Grok 4.6 leads Mistral Medium 3.5 on coding, 65.7 to 25.5 on the Vibe Coding Index, and Grok 4.6 costs 1.3x less per output token ($6.00 vs $7.50 per million). Updated October 22, 2026; 74 benchmarks have a result for both.

Replace Grok 4.6 Replace Mistral Medium 3.5
Grok 4.6xAI
Coding
65.7
Overall
67.4
Output $/M
$6.00
66
Mistral Medium 3.5Mistral AI
Coding
25.5
Overall
37.3
Output $/M
$7.50
8
vs boards won of 74 shared

Grok 4.6 or Mistral Medium 3.5: which to pick

Pick Grok 4.6 for coding: it scores 65.7 on the Vibe Coding Index against 25.5 for Mistral Medium 3.5.

Pick Mistral Medium 3.5 for work measured by LMArena Text: software and IT or LMArena Text: hard prompts in English, where it leads.

Model AGrok 4.6xAI65.7/1006 independent benchmarks$0.82 per solved taskModel BMistral Medium 3.5Mistral AI25.5/1003 independent benchmarks$6.02 per solved task
Shared results
74
Grok 4.6 only
49
Mistral Medium 3.5 only
7
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.

At a glance

Coding index
Grok 4.6 65.7 from 6 benchmarks, Mistral Medium 3.5 25.5 from 3 benchmarks.
Widest category
Agentic work, 37.3 points apart on average over 5 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): Grok 4.6 76.2% against Mistral Medium 3.5 2.9%, 73.3 points apart on a 0 to 100 scale.
Output price
Grok 4.6 $6.00 against Mistral Medium 3.5 $7.50 per million output tokens, 1.3x apart.
Context window
Grok 4.6 takes 500K tokens, Mistral Medium 3.5 262K.

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.

Boards won, where both have a result
CategoryGrok 4.6BarsMistral Medium 3.5Ties
Coding111
Intelligence20
Agentic work50
Reasoning71
Math21
Knowledge72
Web design80
General243
All shared boards668
CodingLike-for-likeSix of these boards feed the Vibe Coding Index111
Coding benchmarks for Grok 4.6 and Mistral Medium 3.5
BenchmarkGrok 4.6Mistral Medium 3.5Leader
LiveBench coding89.1%Not measuredOnly Grok 4.6 measured
LMArena WebDev16171264Grok 4.6
AA Coding Index76.846.9Grok 4.6
LiveCodeBench (Vals AI)88.2%Not measuredOnly Grok 4.6 measured
SWE-bench Verified (Vals AI)95.6%66.4%Grok 4.6
Terminal-Bench 4 (Vals AI)17.2%Not measuredOnly Grok 4.6 measured
Vibe Code Bench (Vals AI)76.2%2.9%Grok 4.6
Code migration (Vals AI)44.6%5.1%Grok 4.6
ProgramBench (Vals AI)1.0%Not measuredOnly Grok 4.6 measured
IOI (Vals AI)47.6%Not measuredOnly Grok 4.6 measured
Terminal-Bench 2.1 (Vals AI)78.3%39.0%Grok 4.6
Vibe Code Bench 1-100 (Vals AI)14.8%Not measuredOnly Grok 4.6 measured
SkillsBench (Vals AI)55.8%Not measuredOnly Grok 4.6 measured
CyberBench (Vals AI)67.7%Not measuredOnly Grok 4.6 measured
SciCode56.5%40.2%Grok 4.6
Terminal-Bench Hard (Artificial Analysis run)Not measured33.3%Only Mistral Medium 3.5 measured
FrontierCode48.0%Not measuredOnly Grok 4.6 measured
FrontierSWE25.3%Not measuredOnly Grok 4.6 measured
WeirdML67.3%Not measuredOnly Grok 4.6 measured
ALE-Bench1508.1764.0Grok 4.6
LMArena Text: coding14661460Grok 4.6
LMArena Text: software and IT14571458Mistral Medium 3.5
LMArena WebDev: React16311254Grok 4.6
LMArena WebDev: HTML15971308Grok 4.6
LMArena WebDev: from an image1603Not measuredOnly Grok 4.6 measured
Neither model has a result on the other 14 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Grok 4.6 and Mistral Medium 3.5
BenchmarkGrok 4.6Mistral Medium 3.5Leader
AA Intelligence Index44.314.2Grok 4.6
Epoch Capabilities Index156.6141.4Grok 4.6
Agentic workLike-for-likePublic boards, shown as published, kept out of the index50
Agentic work benchmarks for Grok 4.6 and Mistral Medium 3.5
BenchmarkGrok 4.6Mistral Medium 3.5Leader
AA Agentic Index53.07.0Grok 4.6
Design Arena: agents building web apps1248Not measuredOnly Grok 4.6 measured
Design Arena: agents building full-stack apps1264Not measuredOnly Grok 4.6 measured
Design Arena: agents building mobile apps1234Not measuredOnly Grok 4.6 measured
Design Arena: agents building Android apps1291Not measuredOnly Grok 4.6 measured
Design Arena: agents building Godot games1276Not measuredOnly Grok 4.6 measured
Design Arena: agents building games1209Not measuredOnly Grok 4.6 measured
Design Arena: HTML slides1250Not measuredOnly Grok 4.6 measured
Design Arena: PowerPoint slides1237Not measuredOnly Grok 4.6 measured
LiveBench research84.5%Not measuredOnly Grok 4.6 measured
LiveBench browser64.0%Not measuredOnly Grok 4.6 measured
LiveBench long agentic40.7%Not measuredOnly Grok 4.6 measured
Finance Agent (Vals AI)53.7%32.1%Grok 4.6
Tax Agent Bench (Vals AI)33.1%4.5%Grok 4.6
Legal Research Bench (Vals AI)48.1%9.1%Grok 4.6
Excel Modeling Benchmark (Vals AI)62.7%11.2%Grok 4.6
BioMysteryBench (Vals AI)72.2%Not measuredOnly Grok 4.6 measured
Terminal-Bench-Science (Vals AI)11.4%Not measuredOnly Grok 4.6 measured
Vals Science Index38.1%Not measuredOnly Grok 4.6 measured
Time Horizon Index (Vals AI)5.8%Not measuredOnly Grok 4.6 measured
τ²-Bench TelecomNot measured94.2%Only Mistral Medium 3.5 measured
APEX-Agents65.3%Not measuredOnly Grok 4.6 measured
Vending-Bench 2$9,047Not measuredOnly Grok 4.6 measured
Neither model has a result on the other 18 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index71
Reasoning benchmarks for Grok 4.6 and Mistral Medium 3.5
BenchmarkGrok 4.6Mistral Medium 3.5Leader
GPQA Diamond94.7%34.9%Grok 4.6
LiveBench reasoning91.2%Not measuredOnly Grok 4.6 measured
MysteryMechanism (Vals AI)30.6%Not measuredOnly Grok 4.6 measured
GPQA Diamond (Artificial Analysis run)94.9%74.8%Grok 4.6
Humanity's Last Exam (Artificial Analysis run)44.1%13.8%Grok 4.6
GPQA Diamond (Epoch AI run)94.0%Not measuredOnly Grok 4.6 measured
ARC-AGI87.5%Not measuredOnly Grok 4.6 measured
ARC-AGI-267.1%Not measuredOnly Grok 4.6 measured
SimpleBench75.9%Not measuredOnly Grok 4.6 measured
Chess puzzles33.0%Not measuredOnly Grok 4.6 measured
Mystery game puzzles34.0%Not measuredOnly Grok 4.6 measured
EBR-bench30.5%Not measuredOnly Grok 4.6 measured
LMArena Text: hard prompts14481436Grok 4.6
LMArena Text: expert14691432Grok 4.6
LMArena Text: hard prompts in English14451445Mistral Medium 3.5
LMArena Vision: diagrams12851254Grok 4.6
LMArena Vision: homework12831230Grok 4.6
Kagi LLM BenchmarkNot measured41.4%Only Mistral Medium 3.5 measured
Neither model has a result on the other 4 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index21
Math benchmarks for Grok 4.6 and Mistral Medium 3.5
BenchmarkGrok 4.6Mistral Medium 3.5Leader
OTIS Mock AIME99.2%Not measuredOnly Grok 4.6 measured
FrontierMath, tiers 1 to 366.0%Not measuredOnly Grok 4.6 measured
FrontierMath, tier 431.7%Not measuredOnly Grok 4.6 measured
ProofBench51.0%9.0%Grok 4.6
LMArena Text: math14171431Mistral Medium 3.5
LMArena Text: mathematical work14641440Grok 4.6
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index72
Knowledge benchmarks for Grok 4.6 and Mistral Medium 3.5
BenchmarkGrok 4.6Mistral Medium 3.5Leader
MMLU Pro89.4%75.3%Grok 4.6
LegalBench (Vals AI)86.3%Not measuredOnly Grok 4.6 measured
CaseLaw (Vals AI)Not measured44.2%Only Mistral Medium 3.5 measured
CorpFin (Vals AI)66.2%58.8%Grok 4.6
TaxEval (Vals AI)71.1%68.0%Grok 4.6
MortgageTax (Vals AI)64.2%28.9%Grok 4.6
MedCode (Vals AI)44.7%33.8%Grok 4.6
SimpleQA Verified49.3%Not measuredOnly Grok 4.6 measured
LMArena Text: science14371428Grok 4.6
LMArena Text: medicine and healthcare14201409Grok 4.6
LMArena Text: legal and government14291437Mistral Medium 3.5
LMArena Text: business and finance14161426Mistral Medium 3.5
Neither model has a result on the other 6 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index80
Web design benchmarks for Grok 4.6 and Mistral Medium 3.5
BenchmarkGrok 4.6Mistral Medium 3.5Leader
Design Arena: websites12891142Grok 4.6
Design Arena: UI components12941076Grok 4.6
Design Arena: game dev12961079Grok 4.6
Design Arena: data viz12821120Grok 4.6
Design Arena: 3D12771060Grok 4.6
Design Arena: all code categories12921121Grok 4.6
Design Arena: SVG1240949Grok 4.6
Design Arena: ASCII art12791062Grok 4.6
LiveBench design79.8%Not measuredOnly Grok 4.6 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index243
General benchmarks for Grok 4.6 and Mistral Medium 3.5
BenchmarkGrok 4.6Mistral Medium 3.5Leader
LiveBench data analysis75.3%Not measuredOnly Grok 4.6 measured
Public Benefits Bench (Vals AI)66.8%Not measuredOnly Grok 4.6 measured
SAGE (Vals AI)28.9%37.6%Mistral Medium 3.5
MedScribe (Vals AI)86.5%67.7%Grok 4.6
Vals Multimodal IndexNot measured34.8%Only Mistral Medium 3.5 measured
IFBenchNot measured68.8%Only Mistral Medium 3.5 measured
Long context reasoning (AA-LCR)81.0%69.3%Grok 4.6
DTBench97.3%75.5%Grok 4.6
LMCA48.5%26.1%Grok 4.6
Surface Evolver BenchNot measured26.9%Only Mistral Medium 3.5 measured
Furniture assembly40.0%Not measuredOnly Grok 4.6 measured
LMArena Text14291421Grok 4.6
LMArena Text: instruction following14311415Grok 4.6
LMArena Text: creative writing14261374Grok 4.6
LMArena Vision12631222Grok 4.6
LMArena Text: English14331433Mistral Medium 3.5
LMArena Text: non-English14201404Grok 4.6
LMArena Text: Chinese14761444Grok 4.6
LMArena Text: German14261453Mistral Medium 3.5
LMArena Text: Japanese1378Not measuredOnly Grok 4.6 measured
LMArena Text: Korean13911384Grok 4.6
LMArena Text: French14551448Grok 4.6
LMArena Text: Spanish14141411Grok 4.6
LMArena Text: Russian14211395Grok 4.6
LMArena Text: Polish14301430Grok 4.6
LMArena Text: multi-turn14251423Grok 4.6
LMArena Text: longer queries14561415Grok 4.6
LMArena Text: writing and language14291384Grok 4.6
LMArena Text: entertainment and media14211382Grok 4.6
LMArena Vision: English12701240Grok 4.6
LMArena Vision: Chinese12891244Grok 4.6
LMArena Vision: reading text12721233Grok 4.6
LMArena Vision: humor12701216Grok 4.6
LMArena Vision: creative writing12621198Grok 4.6
LMArena Document1452Not measuredOnly Grok 4.6 measured
Neither model has a result on the other 11 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Grok 4.6 and Mistral Medium 3.5
BenchmarkGrok 4.6Mistral Medium 3.5Leader
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

Grok 4.6$0.0050Fits in one request
Mistral Medium 3.5$0.0053Fits in one request

Grok 4.6 costs less

Repository review

50K input + 3K output tokens

Grok 4.6$0.118Fits in one request
Mistral Medium 3.5$0.098Fits in one request

Mistral Medium 3.5 costs less

Agent loop

200K input + 10K output tokens

Grok 4.6$0.460Fits in one request
Mistral Medium 3.5$0.375Fits in one request

Mistral Medium 3.5 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.

Specifications of Grok 4.6 and Mistral Medium 3.5
SpecificationSpaceXAI Grok 4.6Mistral Medium 3.5
MakerxAIMistral AI
WeightsNo public weights listedNo public weights listed
ReleasedAugust 12, 2026April 30, 2026
Context window500K262K
Input $/Mtok$2.00$1.50
Output $/Mtok$6.00$7.50
Coding index65.725.5
Independent measurements behind it63
Cost per solved task$0.82$6.02
SourceOpenRouter listingOpenRouter listing

Questions

Is Grok 4.6 better than Mistral Medium 3.5 for coding?

Pick Grok 4.6 for coding: it scores 65.7 on the Vibe Coding Index against 25.5 for Mistral Medium 3.5. Pick Mistral Medium 3.5 for work measured by LMArena Text: software and IT or LMArena Text: hard prompts in English, where it leads.

Which is cheaper, Grok 4.6 or Mistral Medium 3.5?

Grok 4.6 costs $2.00 per million input tokens and $6.00 per million output tokens; Mistral Medium 3.5 costs $1.50 and $7.50. Per solved SWE-bench Verified task, Grok 4.6 costs $0.82 and Mistral Medium 3.5 $6.02.

Which has the bigger context window, Grok 4.6 or Mistral Medium 3.5?

Grok 4.6, with 500K tokens against 262K.

How many benchmarks is the Grok 4.6 vs Mistral Medium 3.5 comparison based on?

74 benchmarks have a result for both models as of October 22, 2026. Grok 4.6's coding index rests on 6 independent benchmarks and Mistral Medium 3.5's on 3. Where only one model has a result, the page says so instead of naming a winner.

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