Enter opens the highlighted result. Esc closes.

GPT-5 Mini vs Mistral Small 3

GPT-5 Mini leads Mistral Small 3 on the Artificial Analysis Intelligence Index, 20.6 to 6.7, and Mistral Small 3 costs 25.0x less per output token ($0.08 vs $2.00 per million). Updated October 22, 2026; 36 benchmarks have a result for both.

Replace GPT-5 Mini Replace Mistral Small 3
GPT-5 MiniOpenAI
Coding
34.2
Overall
43.7
Output $/M
$2.00
36
Mistral Small 3Mistral AI
Coding
No data
Overall
No data
Output $/M
$0.08
0
vs boards won of 36 shared

GPT-5 Mini or Mistral Small 3: which to pick

Only GPT-5 Mini has a coding score, 34.2 on the Vibe Coding Index; Mistral Small 3 has none, so the two cannot be ranked on coding.

Pick Mistral Small 3 for output tokens 25.0x cheaper ($0.08 vs $2.00 per million).

Model AGPT-5 MiniOpenAI34.2/1002 independent benchmarks$0.08 per solved taskModel BMistral Small 3Mistral AINot benchmarkedNo coding benchmarkNo cost per solved task
Shared results
36
GPT-5 Mini only
65
Mistral Small 3 only
0
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.

At a glance

Coding index
GPT-5 Mini 34.2 from 2 benchmarks, Mistral Small 3 not benchmarked.
Widest category
Math, 54.6 points apart on average over 4 shared benchmarks.
Widest single gap
AA Math Index: GPT-5 Mini 90.7 against Mistral Small 3 4.3, 86.4 points apart on a 0 to 100 scale.
Output price
GPT-5 Mini $2.00 against Mistral Small 3 $0.08 per million output tokens, 25.0x apart.
Context window
GPT-5 Mini takes 400K 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
CategoryGPT-5 MiniBarsMistral Small 3Ties
Coding30
Intelligence10
Agentic work10
Reasoning50
Math40
Knowledge50
General170
All shared boards360
CodingLike-for-likeSix of these boards feed the Vibe Coding Index30
Coding benchmarks for GPT-5 Mini and Mistral Small 3
BenchmarkGPT-5 MiniMistral Small 3Leader
SWE-bench Verified59.8%Not measuredOnly GPT-5 Mini measured
SWE-bench Multilingual39.7%Not measuredOnly GPT-5 Mini measured
LiveCodeBench (Vals AI)86.6%Not measuredOnly GPT-5 Mini measured
SWE-bench Verified (Vals AI)60.8%Not measuredOnly GPT-5 Mini measured
Vibe Code Bench (Vals AI)14.2%Not measuredOnly GPT-5 Mini measured
LiveCodeBench (Artificial Analysis run)83.8%25.2%GPT-5 Mini
SciCode39.0%Not measuredOnly GPT-5 Mini measured
Terminal-Bench Hard (Artificial Analysis run)33.3%Not measuredOnly GPT-5 Mini measured
Terminal-Bench34.8%Not measuredOnly GPT-5 Mini measured
WeirdML52.7%Not measuredOnly GPT-5 Mini measured
LMArena Text: coding14061246GPT-5 Mini
LMArena Text: software and IT13941248GPT-5 Mini
Neither model has a result on the other 27 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
Intelligence benchmarks for GPT-5 Mini and Mistral Small 3
BenchmarkGPT-5 MiniMistral Small 3Leader
AA Intelligence Index20.66.7GPT-5 Mini
Epoch Capabilities Index145.3Not measuredOnly GPT-5 Mini measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index10
Agentic work benchmarks for GPT-5 Mini and Mistral Small 3
BenchmarkGPT-5 MiniMistral Small 3Leader
τ²-Bench Telecom71.1%19.6%GPT-5 Mini
Vending-Bench 2-$31Not measuredOnly GPT-5 Mini measured
Berkeley Function Calling Leaderboard (BFCL)55.5%Not measuredOnly GPT-5 Mini measured
Neither model has a result on the other 38 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index50
Reasoning benchmarks for GPT-5 Mini and Mistral Small 3
BenchmarkGPT-5 MiniMistral Small 3Leader
GPQA Diamond80.3%Not measuredOnly GPT-5 Mini measured
MMMU Pro (Vals AI)78.9%Not measuredOnly GPT-5 Mini measured
GPQA Diamond (Artificial Analysis run)82.8%46.2%GPT-5 Mini
Humanity's Last Exam (Artificial Analysis run)21.5%3.8%GPT-5 Mini
GPQA Diamond (Epoch AI run)75.0%Not measuredOnly GPT-5 Mini measured
ARC-AGI54.3%Not measuredOnly GPT-5 Mini measured
ARC-AGI-24.4%Not measuredOnly GPT-5 Mini measured
Chess puzzles24.0%Not measuredOnly GPT-5 Mini measured
Mystery game puzzles10.0%Not measuredOnly GPT-5 Mini measured
VPCT40.2%Not measuredOnly GPT-5 Mini measured
LMArena Text: hard prompts13801233GPT-5 Mini
LMArena Text: expert13791202GPT-5 Mini
LMArena Text: hard prompts in English13831243GPT-5 Mini
LMArena Vision: diagrams1202Not measuredOnly GPT-5 Mini measured
LMArena Vision: homework1210Not measuredOnly GPT-5 Mini measured
Kagi LLM Benchmark70.3%Not measuredOnly GPT-5 Mini measured
Neither model has a result on the other 6 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index40
Math benchmarks for GPT-5 Mini and Mistral Small 3
BenchmarkGPT-5 MiniMistral Small 3Leader
AIME91.5%Not measuredOnly GPT-5 Mini measured
MATH 500 (Vals AI)94.8%Not measuredOnly GPT-5 Mini measured
MGSM (Vals AI)92.6%Not measuredOnly GPT-5 Mini measured
AA Math Index90.74.3GPT-5 Mini
AIME 2025 (Artificial Analysis run)90.7%4.3%GPT-5 Mini
OTIS Mock AIME86.7%Not measuredOnly GPT-5 Mini measured
FrontierMath, tiers 1 to 346.7%Not measuredOnly GPT-5 Mini measured
FrontierMath, tier 412.2%Not measuredOnly GPT-5 Mini measured
ProofBench9.0%Not measuredOnly GPT-5 Mini measured
MATH level 597.8%Not measuredOnly GPT-5 Mini measured
LMArena Text: math13781240GPT-5 Mini
LMArena Text: mathematical work13801243GPT-5 Mini
Neither model has a result on the other 1 board here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index50
Knowledge benchmarks for GPT-5 Mini and Mistral Small 3
BenchmarkGPT-5 MiniMistral Small 3Leader
MMLU Pro82.2%Not measuredOnly GPT-5 Mini measured
LegalBench (Vals AI)81.8%Not measuredOnly GPT-5 Mini measured
CaseLaw (Vals AI)68.5%Not measuredOnly GPT-5 Mini measured
CorpFin (Vals AI)60.2%Not measuredOnly GPT-5 Mini measured
TaxEval (Vals AI)75.2%Not measuredOnly GPT-5 Mini measured
MortgageTax (Vals AI)66.9%Not measuredOnly GPT-5 Mini measured
MedQA (Vals AI)96.1%Not measuredOnly GPT-5 Mini measured
MedCode (Vals AI)43.0%Not measuredOnly GPT-5 Mini measured
MMLU Pro (Artificial Analysis run)83.7%65.2%GPT-5 Mini
SimpleQA Verified21.6%Not measuredOnly GPT-5 Mini measured
LMArena Text: science13711235GPT-5 Mini
LMArena Text: medicine and healthcare13801215GPT-5 Mini
LMArena Text: legal and government13751219GPT-5 Mini
LMArena Text: business and finance13581205GPT-5 Mini
FACTS Benchmark Suite38.6%Not measuredOnly GPT-5 Mini measured
Neither model has a result on the other 3 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
Web design benchmarks for GPT-5 Mini and Mistral Small 3
BenchmarkGPT-5 MiniMistral Small 3Leader
Design Arena: websites1125Not measuredOnly GPT-5 Mini measured
Design Arena: UI components1103Not measuredOnly GPT-5 Mini measured
Design Arena: game dev1129Not measuredOnly GPT-5 Mini measured
Design Arena: data viz1131Not measuredOnly GPT-5 Mini measured
Design Arena: 3D1036Not measuredOnly GPT-5 Mini measured
Design Arena: all code categories1114Not measuredOnly GPT-5 Mini measured
Design Arena: SVG1091Not measuredOnly GPT-5 Mini measured
Design Arena: ASCII art1125Not measuredOnly GPT-5 Mini measured
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index170
General benchmarks for GPT-5 Mini and Mistral Small 3
BenchmarkGPT-5 MiniMistral Small 3Leader
SAGE (Vals AI)43.0%Not measuredOnly GPT-5 Mini measured
MedScribe (Vals AI)80.6%Not measuredOnly GPT-5 Mini measured
IFBench75.4%26.4%GPT-5 Mini
Long context reasoning (AA-LCR)72.3%0.0%GPT-5 Mini
DTBench80.5%Not measuredOnly GPT-5 Mini measured
LMCA34.2%Not measuredOnly GPT-5 Mini measured
Fiction.LiveBench69.4%Not measuredOnly GPT-5 Mini measured
Creative writing (Lech Mazur)83.1%Not measuredOnly GPT-5 Mini measured
LMArena Text13731234GPT-5 Mini
LMArena Text: instruction following13571214GPT-5 Mini
LMArena Text: creative writing13251194GPT-5 Mini
LMArena Vision1202Not measuredOnly GPT-5 Mini measured
LMArena Text: English13791256GPT-5 Mini
LMArena Text: non-English13631198GPT-5 Mini
LMArena Text: Chinese13861204GPT-5 Mini
LMArena Text: German13661211GPT-5 Mini
LMArena Text: Japanese13411111GPT-5 Mini
LMArena Text: Korean13081188GPT-5 Mini
LMArena Text: French13861204GPT-5 Mini
LMArena Text: Spanish1354Not measuredOnly GPT-5 Mini measured
LMArena Text: Russian13621216GPT-5 Mini
LMArena Text: Polish1378Not measuredOnly GPT-5 Mini measured
LMArena Text: multi-turn13631217GPT-5 Mini
LMArena Text: longer queries13551246GPT-5 Mini
LMArena Text: writing and language13441214GPT-5 Mini
LMArena Text: entertainment and media13401184GPT-5 Mini
LMArena Vision: English1216Not measuredOnly GPT-5 Mini measured
LMArena Vision: Chinese1214Not measuredOnly GPT-5 Mini measured
LMArena Vision: reading text1199Not measuredOnly GPT-5 Mini measured
LMArena Vision: humor1205Not measuredOnly GPT-5 Mini measured
LMArena Vision: captioning1217Not measuredOnly GPT-5 Mini measured
LMArena Vision: recognizing things1226Not measuredOnly GPT-5 Mini measured
LMArena Vision: creative writing1181Not measuredOnly GPT-5 Mini measured
Neither model has a result on the other 13 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for GPT-5 Mini and Mistral Small 3
BenchmarkGPT-5 MiniMistral 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

GPT-5 Mini$0.0013Fits in one request
Mistral Small 3$0.0001Fits in one request

Mistral Small 3 costs less

Repository review

50K input + 3K output tokens

GPT-5 Mini$0.018Fits in one request
Mistral Small 3$0.0027Exceeds the context window

Mistral Small 3 costs less

Agent loop

200K input + 10K output tokens

GPT-5 Mini$0.070Fits 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 GPT-5 Mini and Mistral Small 3
SpecificationOpenAI GPT-5 MiniMistral Small 3
MakerOpenAIMistral AI
WeightsNo public weights listedOpen weights
ReleasedAugust 7, 2025January 30, 2025
Context window400K33K
Input $/Mtok$0.25$0.05
Output $/Mtok$2.00$0.08
Coding index34.2Not benchmarked
Independent measurements behind it20
Cost per solved task$0.08Not computable
SourceOpenRouter listingOpenRouter listing

Questions

Is GPT-5 Mini better than Mistral Small 3 for coding?

Only GPT-5 Mini has a coding score, 34.2 on the Vibe Coding Index; Mistral Small 3 has none, so the two cannot be ranked on coding. Pick Mistral Small 3 for output tokens 25.0x cheaper ($0.08 vs $2.00 per million).

Which is cheaper, GPT-5 Mini or Mistral Small 3?

GPT-5 Mini costs $0.25 per million input tokens and $2.00 per million output tokens; Mistral Small 3 costs $0.05 and $0.08. Cost per solved task is known for GPT-5 Mini only.

Which has the bigger context window, GPT-5 Mini or Mistral Small 3?

GPT-5 Mini, with 400K tokens against 33K.

How many benchmarks is the GPT-5 Mini vs Mistral Small 3 comparison based on?

36 benchmarks have a result for both models as of October 22, 2026. GPT-5 Mini's coding index rests on 2 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.

Compare next