DeepSeek V4 Flash 0423 vs Mistral Small 3.1 24B
DeepSeek V4 Flash 0423 costs 2.0x less per output token than Mistral Small 3.1 24B ($0.28 vs $0.555 per million). Updated October 21, 2026; 28 benchmarks have a result for both.
DeepSeek V4 Flash 0423 or Mistral Small 3.1 24B: which to pick
Neither model has a coding score yet, so the two cannot be ranked on coding.
Pick DeepSeek V4 Flash 0423 for output tokens 2.0x cheaper ($0.28 vs $0.555 per million) and a larger context window (1.05M against 128K tokens).
- Shared results
- 28
- DeepSeek V4 Flash 0423 only
- 20
- Mistral Small 3.1 24B only
- 10
- Like-for-like categories
- 5 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
No call
Only DeepSeek V4 Flash 0423 has a AA Intelligence Index result, 24.4.
Directional only
Agentic work
AA Agentic Index
No call
Only DeepSeek V4 Flash 0423 has a AA Agentic Index result, 26.3.
Directional only
Web design
Design Arena: websites
No call
Only DeepSeek V4 Flash 0423 has a Design Arena: websites result, 1208.
Directional only
Long documents
Listed context window
DeepSeek V4 Flash 0423
DeepSeek V4 Flash 0423 takes 1.05M tokens against 128K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
DeepSeek V4 Flash 0423
DeepSeek V4 Flash 0423 $0.0003, Mistral Small 3.1 24B $0.0006 per turn.
List prices
At a glance
- Coding index
- DeepSeek V4 Flash 0423 not benchmarked, Mistral Small 3.1 24B not benchmarked.
- Widest category
- Knowledge, 29.1 points apart on average over 4 shared benchmarks.
- Widest single gap
- LMArena Text: Chinese: DeepSeek V4 Flash 0423 1463 against Mistral Small 3.1 24B 1253, 35.1 points apart on a 0 to 100 scale.
- Output price
- DeepSeek V4 Flash 0423 $0.28 against Mistral Small 3.1 24B $0.555 per million output tokens, 2.0x apart.
- Context window
- DeepSeek V4 Flash 0423 takes 1.05M tokens, Mistral Small 3.1 24B 128K.
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.
| Category | DeepSeek V4 Flash 0423 | Bars | Mistral Small 3.1 24B | Ties |
|---|---|---|---|---|
| Coding | 2 | 0 | ||
| Reasoning | 3 | 0 | ||
| Math | 2 | 0 | ||
| Knowledge | 4 | 0 | ||
| General | 17 | 0 | ||
| All shared boards | 28 | 0 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index20
| Benchmark | DeepSeek V4 Flash 0423 | Mistral Small 3.1 24B | Leader |
|---|---|---|---|
| LMArena WebDev | 1582 | Not measured | Only DeepSeek V4 Flash 0423 measured |
| AA Coding Index | 52.0 | Not measured | Only DeepSeek V4 Flash 0423 measured |
| WeirdML | 45.6% | Not measured | Only DeepSeek V4 Flash 0423 measured |
| ALE-Bench | 678.2 | Not measured | Only DeepSeek V4 Flash 0423 measured |
| LMArena Text: coding | 1457 | 1309 | DeepSeek V4 Flash 0423 |
| LMArena Text: software and IT | 1453 | 1301 | DeepSeek V4 Flash 0423 |
| LMArena WebDev: React | 1585 | Not measured | Only DeepSeek V4 Flash 0423 measured |
| LMArena WebDev: HTML | 1558 | Not measured | Only DeepSeek V4 Flash 0423 measured |
| Neither model has a result on the other 30 boards here | |||
IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index2 boards, none shared
| Benchmark | DeepSeek V4 Flash 0423 | Mistral Small 3.1 24B | Leader |
|---|---|---|---|
| AA Intelligence Index | 24.4 | Not measured | Only DeepSeek V4 Flash 0423 measured |
| Epoch Capabilities Index | 146.1 | Not measured | Only DeepSeek V4 Flash 0423 measured |
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index1 board, none shared
| Benchmark | DeepSeek V4 Flash 0423 | Mistral Small 3.1 24B | Leader |
|---|---|---|---|
| AA Agentic Index | 26.3 | Not measured | Only DeepSeek V4 Flash 0423 measured |
| Neither model has a result on the other 38 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index30
| Benchmark | DeepSeek V4 Flash 0423 | Mistral Small 3.1 24B | Leader |
|---|---|---|---|
| SimpleBench | 46.3% | Not measured | Only DeepSeek V4 Flash 0423 measured |
| LMArena Text: hard prompts | 1444 | 1278 | DeepSeek V4 Flash 0423 |
| LMArena Text: expert | 1441 | 1257 | DeepSeek V4 Flash 0423 |
| LMArena Text: hard prompts in English | 1449 | 1290 | DeepSeek V4 Flash 0423 |
| LMArena Vision: diagrams | Not measured | 1119 | Only Mistral Small 3.1 24B measured |
| LMArena Vision: homework | Not measured | 1158 | Only Mistral Small 3.1 24B measured |
| Neither model has a result on the other 15 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index20
| Benchmark | DeepSeek V4 Flash 0423 | Mistral Small 3.1 24B | Leader |
|---|---|---|---|
| LMArena Text: math | 1426 | 1261 | DeepSeek V4 Flash 0423 |
| LMArena Text: mathematical work | 1432 | 1271 | DeepSeek V4 Flash 0423 |
| Neither model has a result on the other 11 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index40
| Benchmark | DeepSeek V4 Flash 0423 | Mistral Small 3.1 24B | Leader |
|---|---|---|---|
| LMArena Text: science | 1446 | 1265 | DeepSeek V4 Flash 0423 |
| LMArena Text: medicine and healthcare | 1448 | 1267 | DeepSeek V4 Flash 0423 |
| LMArena Text: legal and government | 1439 | 1271 | DeepSeek V4 Flash 0423 |
| LMArena Text: business and finance | 1425 | 1257 | DeepSeek V4 Flash 0423 |
| Neither model has a result on the other 13 boards here | |||
Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
| Benchmark | DeepSeek V4 Flash 0423 | Mistral Small 3.1 24B | Leader |
|---|---|---|---|
| Design Arena: websites | 1208 | Not measured | Only DeepSeek V4 Flash 0423 measured |
| Design Arena: UI components | 1165 | Not measured | Only DeepSeek V4 Flash 0423 measured |
| Design Arena: game dev | 1197 | Not measured | Only DeepSeek V4 Flash 0423 measured |
| Design Arena: data viz | 1127 | Not measured | Only DeepSeek V4 Flash 0423 measured |
| Design Arena: 3D | 1189 | Not measured | Only DeepSeek V4 Flash 0423 measured |
| Design Arena: all code categories | 1205 | Not measured | Only DeepSeek V4 Flash 0423 measured |
| Design Arena: SVG | 1155 | Not measured | Only DeepSeek V4 Flash 0423 measured |
| Design Arena: ASCII art | 1109 | Not measured | Only DeepSeek V4 Flash 0423 measured |
| Neither model has a result on the other 1 board here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index170
| Benchmark | DeepSeek V4 Flash 0423 | Mistral Small 3.1 24B | Leader |
|---|---|---|---|
| DTBench | 86.4% | Not measured | Only DeepSeek V4 Flash 0423 measured |
| LMCA | 35.9% | Not measured | Only DeepSeek V4 Flash 0423 measured |
| LMArena Text | 1432 | 1277 | DeepSeek V4 Flash 0423 |
| LMArena Text: instruction following | 1421 | 1263 | DeepSeek V4 Flash 0423 |
| LMArena Text: creative writing | 1403 | 1252 | DeepSeek V4 Flash 0423 |
| LMArena Vision | Not measured | 1136 | Only Mistral Small 3.1 24B measured |
| LMArena Text: English | 1441 | 1295 | DeepSeek V4 Flash 0423 |
| LMArena Text: non-English | 1419 | 1255 | DeepSeek V4 Flash 0423 |
| LMArena Text: Chinese | 1463 | 1253 | DeepSeek V4 Flash 0423 |
| LMArena Text: German | 1419 | 1266 | DeepSeek V4 Flash 0423 |
| LMArena Text: Japanese | 1389 | 1208 | DeepSeek V4 Flash 0423 |
| LMArena Text: Korean | 1383 | 1207 | DeepSeek V4 Flash 0423 |
| LMArena Text: French | 1439 | 1273 | DeepSeek V4 Flash 0423 |
| LMArena Text: Spanish | 1436 | 1284 | DeepSeek V4 Flash 0423 |
| LMArena Text: Russian | 1427 | 1263 | DeepSeek V4 Flash 0423 |
| LMArena Text: Polish | 1436 | 1242 | DeepSeek V4 Flash 0423 |
| LMArena Text: multi-turn | 1449 | 1270 | DeepSeek V4 Flash 0423 |
| LMArena Text: longer queries | 1434 | 1299 | DeepSeek V4 Flash 0423 |
| LMArena Text: writing and language | 1410 | 1268 | DeepSeek V4 Flash 0423 |
| LMArena Text: entertainment and media | 1400 | 1250 | DeepSeek V4 Flash 0423 |
| LMArena Vision: English | Not measured | 1157 | Only Mistral Small 3.1 24B measured |
| LMArena Vision: Chinese | Not measured | 1155 | Only Mistral Small 3.1 24B measured |
| LMArena Vision: reading text | Not measured | 1132 | Only Mistral Small 3.1 24B measured |
| LMArena Vision: humor | Not measured | 1142 | Only Mistral Small 3.1 24B measured |
| LMArena Vision: captioning | Not measured | 1153 | Only Mistral Small 3.1 24B measured |
| LMArena Vision: recognizing things | Not measured | 1155 | Only Mistral Small 3.1 24B measured |
| LMArena Vision: creative writing | Not measured | 1123 | Only Mistral Small 3.1 24B measured |
| Neither model has a result on the other 19 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | DeepSeek V4 Flash 0423 | Mistral Small 3.1 24B | 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
DeepSeek V4 Flash 0423 costs less
Repository review
50K input + 3K output tokens
DeepSeek V4 Flash 0423 costs less
Agent loop
200K input + 10K output tokens
DeepSeek V4 Flash 0423 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.
| Specification | DeepSeek V4 Flash 0423 | Mistral Small 3.1 24B |
|---|---|---|
| Maker | DeepSeek | Mistral AI |
| Weights | Open weights | Open weights |
| Released | April 24, 2026 | March 17, 2025 |
| Context window | 1.05M | 128K |
| Input $/Mtok | $0.13 | $0.351 |
| Output $/Mtok | $0.28 | $0.555 |
| Coding index | Not benchmarked | Not benchmarked |
| Independent measurements behind it | 1 | 0 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is DeepSeek V4 Flash 0423 better than Mistral Small 3.1 24B for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Pick DeepSeek V4 Flash 0423 for output tokens 2.0x cheaper ($0.28 vs $0.555 per million) and a larger context window (1.05M against 128K tokens).
Which is cheaper, DeepSeek V4 Flash 0423 or Mistral Small 3.1 24B?
DeepSeek V4 Flash 0423 costs $0.13 per million input tokens and $0.28 per million output tokens; Mistral Small 3.1 24B costs $0.351 and $0.555. Cost per solved task is known for neither of them.
Which has the bigger context window, DeepSeek V4 Flash 0423 or Mistral Small 3.1 24B?
DeepSeek V4 Flash 0423, with 1.05M tokens against 128K.
How many benchmarks is the DeepSeek V4 Flash 0423 vs Mistral Small 3.1 24B comparison based on?
28 benchmarks have a result for both models as of October 21, 2026. DeepSeek V4 Flash 0423's coding index rests on 1 independent benchmark and Mistral Small 3.1 24B's on 0. Where only one model has a result, the page says so instead of naming a winner.