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DeepSeek V3.1 Terminus vs Mistral Medium 3

DeepSeek V3.1 Terminus leads Mistral Medium 3 on the Artificial Analysis Intelligence Index, 14.8 to 9.0, and DeepSeek V3.1 Terminus costs 2.0x less per output token ($1.0142 vs $2.00 per million). Updated October 21, 2026; 38 benchmarks have a result for both.

Replace DeepSeek V3.1 Terminus Replace Mistral Medium 3
DeepSeek V3.1 TerminusDeepSeek
Coding
No data
Overall
14.8
Output $/M
$1.0142
38
Mistral Medium 3Mistral AI
Coding
No data
Overall
9.0
Output $/M
$2.00
0
vs boards won of 38 shared

DeepSeek V3.1 Terminus or Mistral Medium 3: which to pick

Neither model has a coding score yet, so the two cannot be ranked on coding.

Pick DeepSeek V3.1 Terminus for output tokens 2.0x cheaper ($1.0142 vs $2.00 per million) and a larger context window (164K against 131K tokens).

Model ADeepSeek V3.1 TerminusDeepSeekNot benchmarkedNo coding benchmarkNo cost per solved taskModel BMistral Medium 3Mistral AINot benchmarkedNo coding benchmarkNo cost per solved task
Shared results
38
DeepSeek V3.1 Terminus only
6
Mistral Medium 3 only
19
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
DeepSeek V3.1 Terminus not benchmarked, Mistral Medium 3 not benchmarked.
Widest category
Math, 42.3 points apart on average over 3 shared benchmarks.
Widest single gap
AA Math Index: DeepSeek V3.1 Terminus 89.7 against Mistral Medium 3 30.3, 59.4 points apart on a 0 to 100 scale.
Output price
DeepSeek V3.1 Terminus $1.0142 against Mistral Medium 3 $2.00 per million output tokens, 2.0x apart.
Context window
DeepSeek V3.1 Terminus takes 164K tokens, Mistral Medium 3 131K.

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
CategoryDeepSeek V3.1 TerminusBarsMistral Medium 3Ties
Coding40
Intelligence10
Agentic work10
Reasoning40
Math30
Knowledge50
Web design60
General140
All shared boards380
CodingLike-for-likeSix of these boards feed the Vibe Coding Index40
Coding benchmarks for DeepSeek V3.1 Terminus and Mistral Medium 3
BenchmarkDeepSeek V3.1 TerminusMistral Medium 3Leader
AA Coding Index43.5Not measuredOnly DeepSeek V3.1 Terminus measured
LiveCodeBench (Artificial Analysis run)79.8%40.0%DeepSeek V3.1 Terminus
SciCode38.0%Not measuredOnly DeepSeek V3.1 Terminus measured
Terminal-Bench Hard (Artificial Analysis run)31.8%3.8%DeepSeek V3.1 Terminus
ALE-Bench745.2Not measuredOnly DeepSeek V3.1 Terminus measured
LMArena Text: coding14251385DeepSeek V3.1 Terminus
LMArena Text: software and IT14261385DeepSeek V3.1 Terminus
Neither model has a result on the other 31 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
Intelligence benchmarks for DeepSeek V3.1 Terminus and Mistral Medium 3
BenchmarkDeepSeek V3.1 TerminusMistral Medium 3Leader
AA Intelligence Index14.89.0DeepSeek V3.1 Terminus
Epoch Capabilities IndexNot measured134.0Only Mistral Medium 3 measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index10
Agentic work benchmarks for DeepSeek V3.1 Terminus and Mistral Medium 3
BenchmarkDeepSeek V3.1 TerminusMistral Medium 3Leader
AA Agentic Index6.8Not measuredOnly DeepSeek V3.1 Terminus measured
τ²-Bench Telecom37.1%24.3%DeepSeek V3.1 Terminus
Neither model has a result on the other 37 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index40
Reasoning benchmarks for DeepSeek V3.1 Terminus and Mistral Medium 3
BenchmarkDeepSeek V3.1 TerminusMistral Medium 3Leader
GPQA Diamond (Artificial Analysis run)79.2%57.8%DeepSeek V3.1 Terminus
Humanity's Last Exam (Artificial Analysis run)16.4%4.1%DeepSeek V3.1 Terminus
LMArena Text: hard prompts14261364DeepSeek V3.1 Terminus
LMArena Text: expertNot measured1342Only Mistral Medium 3 measured
LMArena Text: hard prompts in English14321374DeepSeek V3.1 Terminus
LMArena Vision: diagramsNot measured1155Only Mistral Medium 3 measured
LMArena Vision: homeworkNot measured1165Only Mistral Medium 3 measured
Neither model has a result on the other 14 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index30
Math benchmarks for DeepSeek V3.1 Terminus and Mistral Medium 3
BenchmarkDeepSeek V3.1 TerminusMistral Medium 3Leader
AA Math Index89.730.3DeepSeek V3.1 Terminus
AIME 2025 (Artificial Analysis run)89.7%30.3%DeepSeek V3.1 Terminus
LMArena Text: math14021353DeepSeek V3.1 Terminus
LMArena Text: mathematical workNot measured1354Only Mistral Medium 3 measured
Neither model has a result on the other 9 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index50
Knowledge benchmarks for DeepSeek V3.1 Terminus and Mistral Medium 3
BenchmarkDeepSeek V3.1 TerminusMistral Medium 3Leader
MMLU Pro (Artificial Analysis run)85.1%76.0%DeepSeek V3.1 Terminus
LMArena Text: science14511381DeepSeek V3.1 Terminus
LMArena Text: medicine and healthcare14681381DeepSeek V3.1 Terminus
LMArena Text: legal and government14571384DeepSeek V3.1 Terminus
LMArena Text: business and finance14141352DeepSeek V3.1 Terminus
Neither model has a result on the other 12 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index60
Web design benchmarks for DeepSeek V3.1 Terminus and Mistral Medium 3
BenchmarkDeepSeek V3.1 TerminusMistral Medium 3Leader
Design Arena: websites11871079DeepSeek V3.1 Terminus
Design Arena: UI components11821024DeepSeek V3.1 Terminus
Design Arena: game dev11311018DeepSeek V3.1 Terminus
Design Arena: data viz11671034DeepSeek V3.1 Terminus
Design Arena: 3D11411084DeepSeek V3.1 Terminus
Design Arena: all code categories11751069DeepSeek V3.1 Terminus
Design Arena: SVG1065Not measuredOnly DeepSeek V3.1 Terminus measured
Neither model has a result on the other 2 boards here
GeneralLike-for-likePublic boards, shown as published, kept out of the index140
General benchmarks for DeepSeek V3.1 Terminus and Mistral Medium 3
BenchmarkDeepSeek V3.1 TerminusMistral Medium 3Leader
IFBench57.0%39.3%DeepSeek V3.1 Terminus
Long context reasoning (AA-LCR)69.3%31.3%DeepSeek V3.1 Terminus
DTBench81.3%62.3%DeepSeek V3.1 Terminus
LMCA28.6%Not measuredOnly DeepSeek V3.1 Terminus measured
LMArena Text14191370DeepSeek V3.1 Terminus
LMArena Text: instruction following14041338DeepSeek V3.1 Terminus
LMArena Text: creative writing14031343DeepSeek V3.1 Terminus
LMArena VisionNot measured1157Only Mistral Medium 3 measured
LMArena Text: English14291385DeepSeek V3.1 Terminus
LMArena Text: non-English14081353DeepSeek V3.1 Terminus
LMArena Text: ChineseNot measured1374Only Mistral Medium 3 measured
LMArena Text: GermanNot measured1377Only Mistral Medium 3 measured
LMArena Text: JapaneseNot measured1316Only Mistral Medium 3 measured
LMArena Text: KoreanNot measured1304Only Mistral Medium 3 measured
LMArena Text: FrenchNot measured1368Only Mistral Medium 3 measured
LMArena Text: SpanishNot measured1364Only Mistral Medium 3 measured
LMArena Text: Russian14351359DeepSeek V3.1 Terminus
LMArena Text: Polish14271371DeepSeek V3.1 Terminus
LMArena Text: multi-turn14111384DeepSeek V3.1 Terminus
LMArena Text: longer queries14221360DeepSeek V3.1 Terminus
LMArena Text: writing and language14091352DeepSeek V3.1 Terminus
LMArena Text: entertainment and media13911335DeepSeek V3.1 Terminus
LMArena Vision: EnglishNot measured1172Only Mistral Medium 3 measured
LMArena Vision: ChineseNot measured1161Only Mistral Medium 3 measured
LMArena Vision: reading textNot measured1154Only Mistral Medium 3 measured
LMArena Vision: humorNot measured1145Only Mistral Medium 3 measured
LMArena Vision: captioningNot measured1094Only Mistral Medium 3 measured
LMArena Vision: recognizing thingsNot measured1141Only Mistral Medium 3 measured
LMArena Vision: creative writingNot measured1146Only Mistral Medium 3 measured
Neither model has a result on the other 17 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for DeepSeek V3.1 Terminus and Mistral Medium 3
BenchmarkDeepSeek V3.1 TerminusMistral Medium 3Leader
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

DeepSeek V3.1 Terminus$0.0008Fits in one request
Mistral Medium 3$0.0014Fits in one request

DeepSeek V3.1 Terminus costs less

Repository review

50K input + 3K output tokens

DeepSeek V3.1 Terminus$0.018Fits in one request
Mistral Medium 3$0.026Fits in one request

DeepSeek V3.1 Terminus costs less

Agent loop

200K input + 10K output tokens

DeepSeek V3.1 Terminus$0.071Exceeds the context window
Mistral Medium 3$0.100Exceeds the context window

DeepSeek V3.1 Terminus 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 DeepSeek V3.1 Terminus and Mistral Medium 3
SpecificationDeepSeek V3.1 TerminusMistral Medium 3
MakerDeepSeekMistral AI
WeightsOpen weightsNo public weights listed
ReleasedSeptember 22, 2025May 7, 2025
Context window164K131K
Input $/Mtok$0.3063$0.40
Output $/Mtok$1.0142$2.00
Coding indexNot benchmarkedNot benchmarked
Independent measurements behind it00
Cost per solved taskNot computableNot computable
SourceOpenRouter listingOpenRouter listing

Questions

Is DeepSeek V3.1 Terminus better than Mistral Medium 3 for coding?

Neither model has a coding score yet, so the two cannot be ranked on coding. Pick DeepSeek V3.1 Terminus for output tokens 2.0x cheaper ($1.0142 vs $2.00 per million) and a larger context window (164K against 131K tokens).

Which is cheaper, DeepSeek V3.1 Terminus or Mistral Medium 3?

DeepSeek V3.1 Terminus costs $0.3063 per million input tokens and $1.0142 per million output tokens; Mistral Medium 3 costs $0.40 and $2.00. Cost per solved task is known for neither of them.

Which has the bigger context window, DeepSeek V3.1 Terminus or Mistral Medium 3?

DeepSeek V3.1 Terminus, with 164K tokens against 131K.

How many benchmarks is the DeepSeek V3.1 Terminus vs Mistral Medium 3 comparison based on?

38 benchmarks have a result for both models as of October 21, 2026. DeepSeek V3.1 Terminus's coding index rests on 0 independent benchmarks and Mistral Medium 3's on 0. Where only one model has a result, the page says so instead of naming a winner.

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