Gemini 2.5 Flash Lite vs Mistral Small 3

Gemini 2.5 Flash Lite leads Mistral Small 3 on the Artificial Analysis Intelligence Index, 10.4 to 6.7, and Mistral Small 3 costs 5.0x less per output token ($0.08 vs $0.40 per million). Updated October 21, 2026; 10 benchmarks have a result for both.

Replace Gemini 2.5 Flash Lite Replace Mistral Small 3

Gemini 2.5 Flash LiteGoogle

Coding: No data
Overall: No data
Output $/M: $0.40

Mistral Small 3Mistral AI

Coding: No data
Overall: No data
Output $/M: $0.08

vs boards won of 10 shared

Gemini 2.5 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 2.5 Flash Lite for a larger context window (1.05M against 33K tokens) and work measured by τ²-Bench Telecom, where it leads.

Model AGemini 2.5 Flash LiteGoogleNot benchmarkedNo coding benchmarkNo cost per solved task Model BMistral Small 3Mistral AINot benchmarkedNo coding benchmarkNo cost per solved task

102026

Shared results: 10
Gemini 2.5 Flash Lite only: 20
Mistral Small 3 only: 26
Like-for-like categories: 7 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
No call
Neither has a coding score yet.
One side not measured
Intelligence
AA Intelligence Index
Gemini 2.5 Flash Lite
Gemini 2.5 Flash Lite leads, 10.4 against 6.7.
Same board, both measured
Reasoning
GPQA Diamond
No call
Only Gemini 2.5 Flash Lite has a GPQA Diamond result, 70.2%.
Directional only
Math
AIME
No call
Only Gemini 2.5 Flash Lite has a AIME result, 42.1%.
Directional only
Knowledge
MMLU Pro
No call
Only Gemini 2.5 Flash Lite has a MMLU Pro result, 79.1%.
Directional only
Long documents
Listed context window
Gemini 2.5 Flash Lite
Gemini 2.5 Flash Lite takes 1.05M tokens against 33K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Mistral Small 3
Gemini 2.5 Flash Lite $0.0003, Mistral Small 3 $0.0001 per turn.
List prices

At a glance

Coding index: Gemini 2.5 Flash Lite not benchmarked, Mistral Small 3 not benchmarked.
Widest category: Math, 49.0 points apart on average over 2 shared benchmarks.
Widest single gap: Long context reasoning (AA-LCR): Gemini 2.5 Flash Lite 55.7% against Mistral Small 3 0.0%, 55.7 points apart on a 0 to 100 scale.
Output price: Gemini 2.5 Flash Lite $0.40 against Mistral Small 3 $0.08 per million output tokens, 5.0x apart.
Context window: Gemini 2.5 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
Category	Gemini 2.5 Flash Lite	Mistral Small 3
Coding	1	0
Intelligence	1	0
Agentic work	0	1
Reasoning	2	0
Math	2	0
Knowledge	1	0
General	2	0
All shared boards	9	1

CodingLike-for-likeSix of these boards feed the Vibe Coding Index10

Coding benchmarks for Gemini 2.5 Flash Lite and Mistral Small 3
Benchmark	Gemini 2.5 Flash Lite	Mistral Small 3	Leader
LiveCodeBench (Vals AI)	71.4%	Not measured	Only Gemini 2.5 Flash Lite measured
LiveCodeBench (Artificial Analysis run)	59.3%	25.2%	Gemini 2.5 Flash Lite
Terminal-Bench Hard (Artificial Analysis run)	4.5%	Not measured	Only Gemini 2.5 Flash Lite measured
LMArena Text: coding	Not measured	1246	Only Mistral Small 3 measured
LMArena Text: software and IT	Not measured	1248	Only Mistral Small 3 measured
Neither model has a result on the other 34 boards here

IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10

Intelligence benchmarks for Gemini 2.5 Flash Lite and Mistral Small 3
Benchmark	Gemini 2.5 Flash Lite	Mistral Small 3	Leader
AA Intelligence Index	10.4	6.7	Gemini 2.5 Flash Lite
Epoch Capabilities Index	133.8	Not measured	Only Gemini 2.5 Flash Lite measured

Agentic workLike-for-likePublic boards, shown as published, kept out of the index01

Agentic work benchmarks for Gemini 2.5 Flash Lite and Mistral Small 3
Benchmark	Gemini 2.5 Flash Lite	Mistral Small 3	Leader
τ²-Bench Telecom	19.0%	19.6%	Mistral Small 3
Berkeley Function Calling Leaderboard (BFCL)	36.9%	Not measured	Only Gemini 2.5 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 2.5 Flash Lite and Mistral Small 3
Benchmark	Gemini 2.5 Flash Lite	Mistral Small 3	Leader
GPQA Diamond	70.2%	Not measured	Only Gemini 2.5 Flash Lite measured
MMMU Pro (Vals AI)	75.4%	Not measured	Only Gemini 2.5 Flash Lite measured
GPQA Diamond (Artificial Analysis run)	62.5%	46.2%	Gemini 2.5 Flash Lite
Humanity's Last Exam (Artificial Analysis run)	6.8%	3.8%	Gemini 2.5 Flash Lite
LMArena Text: hard prompts	Not measured	1233	Only Mistral Small 3 measured
LMArena Text: expert	Not measured	1202	Only Mistral Small 3 measured
LMArena Text: hard prompts in English	Not measured	1243	Only Mistral Small 3 measured
Kagi LLM Benchmark	40.5%	Not measured	Only Gemini 2.5 Flash Lite measured
Neither model has a result on the other 14 boards here

MathLike-for-likePublic boards, shown as published, kept out of the index20

Math benchmarks for Gemini 2.5 Flash Lite and Mistral Small 3
Benchmark	Gemini 2.5 Flash Lite	Mistral Small 3	Leader
AIME	42.1%	Not measured	Only Gemini 2.5 Flash Lite measured
MGSM (Vals AI)	89.5%	Not measured	Only Gemini 2.5 Flash Lite measured
AA Math Index	53.3	4.3	Gemini 2.5 Flash Lite
AIME 2025 (Artificial Analysis run)	53.3%	4.3%	Gemini 2.5 Flash Lite
LMArena Text: math	Not measured	1240	Only Mistral Small 3 measured
LMArena Text: mathematical work	Not measured	1243	Only Mistral Small 3 measured
Neither model has a result on the other 7 boards here

KnowledgeLike-for-likePublic boards, shown as published, kept out of the index10

Knowledge benchmarks for Gemini 2.5 Flash Lite and Mistral Small 3
Benchmark	Gemini 2.5 Flash Lite	Mistral Small 3	Leader
MMLU Pro	79.1%	Not measured	Only Gemini 2.5 Flash Lite measured
LegalBench (Vals AI)	82.0%	Not measured	Only Gemini 2.5 Flash Lite measured
CorpFin (Vals AI)	57.6%	Not measured	Only Gemini 2.5 Flash Lite measured
TaxEval (Vals AI)	66.2%	Not measured	Only Gemini 2.5 Flash Lite measured
MortgageTax (Vals AI)	57.6%	Not measured	Only Gemini 2.5 Flash Lite measured
MedQA (Vals AI)	88.9%	Not measured	Only Gemini 2.5 Flash Lite measured
MedCode (Vals AI)	34.2%	Not measured	Only Gemini 2.5 Flash Lite measured
MMLU Pro (Artificial Analysis run)	75.9%	65.2%	Gemini 2.5 Flash Lite
LMArena Text: science	Not measured	1235	Only Mistral Small 3 measured
LMArena Text: medicine and healthcare	Not measured	1215	Only Mistral Small 3 measured
LMArena Text: legal and government	Not measured	1219	Only Mistral Small 3 measured
LMArena Text: business and finance	Not measured	1205	Only Mistral Small 3 measured
Neither model has a result on the other 6 boards here

Web designNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared

Web design benchmarks for Gemini 2.5 Flash Lite and Mistral Small 3
Benchmark	Gemini 2.5 Flash Lite	Mistral Small 3	Leader
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 2.5 Flash Lite and Mistral Small 3
Benchmark	Gemini 2.5 Flash Lite	Mistral Small 3	Leader
SAGE (Vals AI)	30.8%	Not measured	Only Gemini 2.5 Flash Lite measured
MedScribe (Vals AI)	75.8%	Not measured	Only Gemini 2.5 Flash Lite measured
IFBench	49.9%	26.4%	Gemini 2.5 Flash Lite
Long context reasoning (AA-LCR)	55.7%	0.0%	Gemini 2.5 Flash Lite
DTBench	62.8%	Not measured	Only Gemini 2.5 Flash Lite measured
LMCA	18.1%	Not measured	Only Gemini 2.5 Flash Lite measured
LMArena Text	Not measured	1234	Only Mistral Small 3 measured
LMArena Text: instruction following	Not measured	1214	Only Mistral Small 3 measured
LMArena Text: creative writing	Not measured	1194	Only Mistral Small 3 measured
LMArena Text: English	Not measured	1256	Only Mistral Small 3 measured
LMArena Text: non-English	Not measured	1198	Only Mistral Small 3 measured
LMArena Text: Chinese	Not measured	1204	Only Mistral Small 3 measured
LMArena Text: German	Not measured	1211	Only Mistral Small 3 measured
LMArena Text: Japanese	Not measured	1111	Only Mistral Small 3 measured
LMArena Text: Korean	Not measured	1188	Only Mistral Small 3 measured
LMArena Text: French	Not measured	1204	Only Mistral Small 3 measured
LMArena Text: Russian	Not measured	1216	Only Mistral Small 3 measured
LMArena Text: multi-turn	Not measured	1217	Only Mistral Small 3 measured
LMArena Text: longer queries	Not measured	1246	Only Mistral Small 3 measured
LMArena Text: writing and language	Not measured	1214	Only Mistral Small 3 measured
LMArena Text: entertainment and media	Not measured	1184	Only Mistral Small 3 measured
Neither model has a result on the other 25 boards here

Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared

Image generation benchmarks for Gemini 2.5 Flash Lite and Mistral Small 3
Benchmark	Gemini 2.5 Flash Lite	Mistral Small 3	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 2.5 Flash Lite$0.0003Fits in one request

Mistral Small 3$0.0001Fits in one request

Mistral Small 3 costs less

Repository review

50K input + 3K output tokens

Gemini 2.5 Flash Lite$0.0062Fits in one request

Mistral Small 3$0.0027Exceeds the context window

Mistral Small 3 costs less

Agent loop

200K input + 10K output tokens

Gemini 2.5 Flash Lite$0.024Fits 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 2.5 Flash Lite and Mistral Small 3
Specification	Google Gemini 2.5 Flash Lite	Mistral Small 3
Maker	Google	Mistral AI
Weights	No public weights listed	Open weights
Released	July 22, 2025	January 30, 2025
Context window	1.05M	33K
Input $/Mtok	$0.10	$0.05
Output $/Mtok	$0.40	$0.08
Coding index	Not benchmarked	Not benchmarked
Independent measurements behind it	0	0
Cost per solved task	Not computable	Not computable
Source	OpenRouter listing	OpenRouter listing

Questions

Is Gemini 2.5 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 2.5 Flash Lite for a larger context window (1.05M against 33K tokens) and work measured by τ²-Bench Telecom, where it leads.

Which is cheaper, Gemini 2.5 Flash Lite or Mistral Small 3?

Gemini 2.5 Flash Lite costs $0.10 per million input tokens and $0.40 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 2.5 Flash Lite or Mistral Small 3?

Gemini 2.5 Flash Lite, with 1.05M tokens against 33K.

How many benchmarks is the Gemini 2.5 Flash Lite vs Mistral Small 3 comparison based on?

10 benchmarks have a result for both models as of October 21, 2026. Gemini 2.5 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.

Gemini 2.5 Flash Lite or Mistral Small 3: which to pick

Which one for your work

Coding

Intelligence

Reasoning

Math

Knowledge

Long documents

Everyday cost

At a glance

Benchmark by benchmark

What each workload costs

Chat turn

Repository review

Agent loop

Specification differences

Questions

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