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Gemini 3.1 Flash Lite vs Mistral Small 3

Mistral Small 3 costs 18.8x less per output token than Gemini 3.1 Flash Lite ($0.08 vs $1.50 per million). Updated October 22, 2026; 5 benchmarks have a result for both.

Replace Gemini 3.1 Flash Lite Replace Mistral Small 3
Gemini 3.1 Flash LiteGoogle
Coding
No data
Overall
No data
Output $/M
$1.50
5
Mistral Small 3Mistral AI
Coding
No data
Overall
No data
Output $/M
$0.08
0
vs boards won of 5 shared

Gemini 3.1 Flash Lite or Mistral Small 3: which to pick

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

Pick Gemini 3.1 Flash Lite for a larger context window (1.05M against 33K tokens).

Model AGemini 3.1 Flash LiteGoogleNot benchmarkedNo coding benchmarkNo cost per solved taskModel BMistral Small 3Mistral AINot benchmarkedNo coding benchmarkNo cost per solved task
Shared results
5
Gemini 3.1 Flash Lite only
11
Mistral Small 3 only
31
Like-for-like categories
3 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
Gemini 3.1 Flash Lite not benchmarked, Mistral Small 3 not benchmarked.
Widest category
General, 62.6 points apart on average over 2 shared benchmarks.
Widest single gap
Long context reasoning (AA-LCR): Gemini 3.1 Flash Lite 74.3% against Mistral Small 3 0.0%, 74.3 points apart on a 0 to 100 scale.
Output price
Gemini 3.1 Flash Lite $1.50 against Mistral Small 3 $0.08 per million output tokens, 18.8x apart.
Context window
Gemini 3.1 Flash Lite takes 1.05M tokens, Mistral Small 3 33K.

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
CategoryGemini 3.1 Flash LiteBarsMistral Small 3Ties
Agentic work10
Reasoning20
General20
All shared boards50
CodingDirectional onlySix of these boards feed the Vibe Coding Index6 boards, none shared
Coding benchmarks for Gemini 3.1 Flash Lite and Mistral Small 3
BenchmarkGemini 3.1 Flash LiteMistral Small 3Leader
LiveCodeBench (Artificial Analysis run)Not measured25.2%Only Mistral Small 3 measured
SciCode43.4%Not measuredOnly Gemini 3.1 Flash Lite measured
Terminal-Bench Hard (Artificial Analysis run)24.2%Not measuredOnly Gemini 3.1 Flash Lite measured
WeirdML52.2%Not measuredOnly Gemini 3.1 Flash Lite measured
LMArena Text: codingNot measured1246Only Mistral Small 3 measured
LMArena Text: software and ITNot measured1248Only Mistral Small 3 measured
Neither model has a result on the other 33 boards here
IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index2 boards, none shared
Intelligence benchmarks for Gemini 3.1 Flash Lite and Mistral Small 3
BenchmarkGemini 3.1 Flash LiteMistral Small 3Leader
AA Intelligence IndexNot measured6.7Only Mistral Small 3 measured
Epoch Capabilities Index144.3Not measuredOnly Gemini 3.1 Flash Lite measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index10
Agentic work benchmarks for Gemini 3.1 Flash Lite and Mistral Small 3
BenchmarkGemini 3.1 Flash LiteMistral Small 3Leader
τ²-Bench Telecom31.3%19.6%Gemini 3.1 Flash Lite
DeepResearch Bench37.3%Not measuredOnly Gemini 3.1 Flash Lite measured
Neither model has a result on the other 39 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index20
Reasoning benchmarks for Gemini 3.1 Flash Lite and Mistral Small 3
BenchmarkGemini 3.1 Flash LiteMistral Small 3Leader
GPQA Diamond (Artificial Analysis run)82.2%46.2%Gemini 3.1 Flash Lite
Humanity's Last Exam (Artificial Analysis run)17.2%3.8%Gemini 3.1 Flash Lite
GPQA Diamond (Epoch AI run)81.8%Not measuredOnly Gemini 3.1 Flash Lite measured
LMArena Text: hard promptsNot measured1233Only Mistral Small 3 measured
LMArena Text: expertNot measured1202Only Mistral Small 3 measured
LMArena Text: hard prompts in EnglishNot measured1243Only Mistral Small 3 measured
Kagi LLM Benchmark67.2%Not measuredOnly Gemini 3.1 Flash Lite measured
Neither model has a result on the other 15 boards here
MathDirectional onlyPublic boards, shown as published, kept out of the index6 boards, none shared
Math benchmarks for Gemini 3.1 Flash Lite and Mistral Small 3
BenchmarkGemini 3.1 Flash LiteMistral Small 3Leader
AA Math IndexNot measured4.3Only Mistral Small 3 measured
AIME 2025 (Artificial Analysis run)Not measured4.3%Only Mistral Small 3 measured
OTIS Mock AIME80.0%Not measuredOnly Gemini 3.1 Flash Lite measured
FrontierMath, tiers 1 to 327.7%Not measuredOnly Gemini 3.1 Flash Lite measured
LMArena Text: mathNot measured1240Only Mistral Small 3 measured
LMArena Text: mathematical workNot measured1243Only Mistral Small 3 measured
Neither model has a result on the other 7 boards here
KnowledgeDirectional onlyPublic boards, shown as published, kept out of the index5 boards, none shared
Knowledge benchmarks for Gemini 3.1 Flash Lite and Mistral Small 3
BenchmarkGemini 3.1 Flash LiteMistral Small 3Leader
MMLU Pro (Artificial Analysis run)Not measured65.2%Only Mistral Small 3 measured
LMArena Text: scienceNot measured1235Only Mistral Small 3 measured
LMArena Text: medicine and healthcareNot measured1215Only Mistral Small 3 measured
LMArena Text: legal and governmentNot measured1219Only Mistral Small 3 measured
LMArena Text: business and financeNot measured1205Only Mistral Small 3 measured
Neither model has a result on the other 13 boards here
Web designNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Web design benchmarks for Gemini 3.1 Flash Lite and Mistral Small 3
BenchmarkGemini 3.1 Flash LiteMistral Small 3Leader
Neither model has a result on 9 boards here
GeneralLike-for-likePublic boards, shown as published, kept out of the index20
General benchmarks for Gemini 3.1 Flash Lite and Mistral Small 3
BenchmarkGemini 3.1 Flash LiteMistral Small 3Leader
IFBench77.2%26.4%Gemini 3.1 Flash Lite
Long context reasoning (AA-LCR)74.3%0.0%Gemini 3.1 Flash Lite
DTBench76.8%Not measuredOnly Gemini 3.1 Flash Lite measured
LMCA35.0%Not measuredOnly Gemini 3.1 Flash Lite measured
LMArena TextNot measured1234Only Mistral Small 3 measured
LMArena Text: instruction followingNot measured1214Only Mistral Small 3 measured
LMArena Text: creative writingNot measured1194Only Mistral Small 3 measured
LMArena Text: EnglishNot measured1256Only Mistral Small 3 measured
LMArena Text: non-EnglishNot measured1198Only Mistral Small 3 measured
LMArena Text: ChineseNot measured1204Only Mistral Small 3 measured
LMArena Text: GermanNot measured1211Only Mistral Small 3 measured
LMArena Text: JapaneseNot measured1111Only Mistral Small 3 measured
LMArena Text: KoreanNot measured1188Only Mistral Small 3 measured
LMArena Text: FrenchNot measured1204Only Mistral Small 3 measured
LMArena Text: RussianNot measured1216Only Mistral Small 3 measured
LMArena Text: multi-turnNot measured1217Only Mistral Small 3 measured
LMArena Text: longer queriesNot measured1246Only Mistral Small 3 measured
LMArena Text: writing and languageNot measured1214Only Mistral Small 3 measured
LMArena Text: entertainment and mediaNot measured1184Only Mistral Small 3 measured
Neither model has a result on the other 27 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Gemini 3.1 Flash Lite and Mistral Small 3
BenchmarkGemini 3.1 Flash LiteMistral Small 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

Gemini 3.1 Flash Lite$0.0010Fits in one request
Mistral Small 3$0.0001Fits in one request

Mistral Small 3 costs less

Repository review

50K input + 3K output tokens

Gemini 3.1 Flash Lite$0.017Fits in one request
Mistral Small 3$0.0027Exceeds the context window

Mistral Small 3 costs less

Agent loop

200K input + 10K output tokens

Gemini 3.1 Flash Lite$0.065Fits in one request
Mistral Small 3$0.011Exceeds the context window

Mistral Small 3 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 Gemini 3.1 Flash Lite and Mistral Small 3
SpecificationGoogle Gemini 3.1 Flash LiteMistral Small 3
MakerGoogleMistral AI
WeightsNo public weights listedOpen weights
ReleasedMay 7, 2026January 30, 2025
Context window1.05M33K
Input $/Mtok$0.25$0.05
Output $/Mtok$1.50$0.08
Coding indexNot benchmarkedNot benchmarked
Independent measurements behind it00
Cost per solved taskNot computableNot computable
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemini 3.1 Flash Lite better than Mistral Small 3 for coding?

Neither model has a coding score yet, so the two cannot be ranked on coding. Pick Gemini 3.1 Flash Lite for a larger context window (1.05M against 33K tokens).

Which is cheaper, Gemini 3.1 Flash Lite or Mistral Small 3?

Gemini 3.1 Flash Lite costs $0.25 per million input tokens and $1.50 per million output tokens; Mistral Small 3 costs $0.05 and $0.08. Cost per solved task is known for neither of them.

Which has the bigger context window, Gemini 3.1 Flash Lite or Mistral Small 3?

Gemini 3.1 Flash Lite, with 1.05M tokens against 33K.

How many benchmarks is the Gemini 3.1 Flash Lite vs Mistral Small 3 comparison based on?

5 benchmarks have a result for both models as of October 22, 2026. Gemini 3.1 Flash Lite's coding index rests on 0 independent benchmarks and Mistral Small 3's on 0. Where only one model has a result, the page says so instead of naming a winner.

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