DeepSeek V4 Pro 0423 vs Solar Pro 4
DeepSeek V4 Pro 0423 leads Solar Pro 4 on the Artificial Analysis Intelligence Index, 30.4 to 28.2, and Solar Pro 4 costs 5.0x less per output token ($0.60 vs $2.976 per million). Updated October 22, 2026; 41 benchmarks have a result for both.
DeepSeek V4 Pro 0423 or Solar Pro 4: which to pick
Only DeepSeek V4 Pro 0423 has a coding score, 38.7 on the Vibe Coding Index; Solar Pro 4 has none, so the two cannot be ranked on coding.
Pick Solar Pro 4 for output tokens 5.0x cheaper ($0.60 vs $2.976 per million) and work measured by Design Arena: agents building web apps, where it leads.
- Shared results
- 41
- DeepSeek V4 Pro 0423 only
- 43
- Solar Pro 4 only
- 4
- 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.
Coding
Vibe Coding Index, six public coding benchmarks
No call
Only DeepSeek V4 Pro 0423 has a coding score, so no call is made.
One side not measured
Intelligence
AA Intelligence Index
DeepSeek V4 Pro 0423
DeepSeek V4 Pro 0423 leads, 30.4 against 28.2.
Same board, both measured
Agentic work
AA Agentic Index
No call
Only DeepSeek V4 Pro 0423 has a AA Agentic Index result, 26.3.
Directional only
Reasoning
GPQA Diamond
No call
Only DeepSeek V4 Pro 0423 has a GPQA Diamond result, 89.4%.
Directional only
Knowledge
MMLU Pro
No call
Only DeepSeek V4 Pro 0423 has a MMLU Pro result, 87.3%.
Directional only
Web design
Design Arena: websites
DeepSeek V4 Pro 0423
DeepSeek V4 Pro 0423 leads, 1234 against 1176.
Same board, both measured
Long documents
Listed context window
DeepSeek V4 Pro 0423
DeepSeek V4 Pro 0423 takes 1.05M tokens against 524K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Solar Pro 4
DeepSeek V4 Pro 0423 $0.0028, Solar Pro 4 $0.0004 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
No call
Only DeepSeek V4 Pro 0423 has the number, $0.57.
Directional only
At a glance
- Coding index
- DeepSeek V4 Pro 0423 38.7 from 5 benchmarks, Solar Pro 4 not benchmarked.
- Widest category
- General, 14.0 points apart on average over 17 shared benchmarks.
- Widest single gap
- ALE-Bench: DeepSeek V4 Pro 0423 1006.1 against Solar Pro 4 179.3, 27.6 points apart on a 0 to 100 scale.
- Output price
- DeepSeek V4 Pro 0423 $2.976 against Solar Pro 4 $0.60 per million output tokens, 5.0x apart.
- Context window
- DeepSeek V4 Pro 0423 takes 1.05M tokens, Solar Pro 4 524K.
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 Pro 0423 | Bars | Solar Pro 4 | Ties |
|---|---|---|---|---|
| Coding | 7 | 0 | ||
| Intelligence | 1 | 0 | ||
| Agentic work | 0 | 1 | ||
| Reasoning | 3 | 0 | ||
| Math | 2 | 0 | ||
| Knowledge | 4 | 0 | ||
| Web design | 6 | 0 | ||
| General | 17 | 0 | ||
| All shared boards | 40 | 1 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index70
| Benchmark | DeepSeek V4 Pro 0423 | Solar Pro 4 | Leader |
|---|---|---|---|
| LMArena WebDev | 1447 | 1371 | DeepSeek V4 Pro 0423 |
| AA Coding Index | 59.4 | 52.7 | DeepSeek V4 Pro 0423 |
| LiveCodeBench (Vals AI) | 87.5% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| SWE-bench Verified (Vals AI) | 77.4% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| Terminal-Bench 4 (Vals AI) | 11.1% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| Vibe Code Bench (Vals AI) | 49.9% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| Code migration (Vals AI) | 26.2% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| ProgramBench (Vals AI) | 0.0% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| Terminal-Bench 2.1 (Vals AI) | 50.2% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| SkillsBench (Vals AI) | 51.3% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| SciCode | Not measured | 48.0% | Only Solar Pro 4 measured |
| FrontierCode | 17.6% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| WeirdML | 48.9% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| ALE-Bench | 1006.1 | 179.3 | DeepSeek V4 Pro 0423 |
| LMArena Text: coding | 1470 | 1438 | DeepSeek V4 Pro 0423 |
| LMArena Text: software and IT | 1469 | 1431 | DeepSeek V4 Pro 0423 |
| LMArena WebDev: React | 1441 | 1363 | DeepSeek V4 Pro 0423 |
| LMArena WebDev: HTML | 1435 | 1371 | DeepSeek V4 Pro 0423 |
| Neither model has a result on the other 21 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | DeepSeek V4 Pro 0423 | Solar Pro 4 | Leader |
|---|---|---|---|
| AA Intelligence Index | 30.4 | 28.2 | DeepSeek V4 Pro 0423 |
| Epoch Capabilities Index | 149.1 | Not measured | Only DeepSeek V4 Pro 0423 measured |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | DeepSeek V4 Pro 0423 | Solar Pro 4 | Leader |
|---|---|---|---|
| AA Agentic Index | 26.3 | Not measured | Only DeepSeek V4 Pro 0423 measured |
| Design Arena: agents building web apps | 1000 | 1105 | Solar Pro 4 |
| Design Arena: agents building full-stack apps | 948 | Not measured | Only DeepSeek V4 Pro 0423 measured |
| Design Arena: agents building Godot games | 1059 | Not measured | Only DeepSeek V4 Pro 0423 measured |
| Finance Agent (Vals AI) | 44.1% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| Tax Agent Bench (Vals AI) | 25.2% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| Legal Research Bench (Vals AI) | 23.1% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| Excel Modeling Benchmark (Vals AI) | 51.6% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| Vending-Bench 2 | $3,285 | Not measured | Only DeepSeek V4 Pro 0423 measured |
| Neither model has a result on the other 32 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index30
| Benchmark | DeepSeek V4 Pro 0423 | Solar Pro 4 | Leader |
|---|---|---|---|
| GPQA Diamond | 89.4% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| GPQA Diamond (Artificial Analysis run) | Not measured | 89.1% | Only Solar Pro 4 measured |
| Humanity's Last Exam (Artificial Analysis run) | Not measured | 29.8% | Only Solar Pro 4 measured |
| GPQA Diamond (Epoch AI run) | 90.9% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| Chess puzzles | 19.0% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| Mystery game puzzles | 17.0% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| LMArena Text: hard prompts | 1461 | 1400 | DeepSeek V4 Pro 0423 |
| LMArena Text: expert | 1463 | 1428 | DeepSeek V4 Pro 0423 |
| LMArena Text: hard prompts in English | 1466 | 1427 | DeepSeek V4 Pro 0423 |
| Kagi LLM Benchmark | 53.5% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| Neither model has a result on the other 12 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index20
| Benchmark | DeepSeek V4 Pro 0423 | Solar Pro 4 | Leader |
|---|---|---|---|
| OTIS Mock AIME | 96.7% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| FrontierMath, tiers 1 to 3 | 45.3% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| FrontierMath, tier 4 | 2.4% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| ProofBench | 16.0% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| LMArena Text: math | 1443 | 1421 | DeepSeek V4 Pro 0423 |
| LMArena Text: mathematical work | 1455 | 1427 | DeepSeek V4 Pro 0423 |
| Neither model has a result on the other 7 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index40
| Benchmark | DeepSeek V4 Pro 0423 | Solar Pro 4 | Leader |
|---|---|---|---|
| MMLU Pro | 87.3% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| LegalBench (Vals AI) | 80.3% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| CaseLaw (Vals AI) | 59.4% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| CorpFin (Vals AI) | 61.4% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| TaxEval (Vals AI) | 72.1% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| MedCode (Vals AI) | 40.5% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| SimpleQA Verified | 47.0% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| LMArena Text: science | 1470 | 1404 | DeepSeek V4 Pro 0423 |
| LMArena Text: medicine and healthcare | 1466 | 1374 | DeepSeek V4 Pro 0423 |
| LMArena Text: legal and government | 1464 | 1383 | DeepSeek V4 Pro 0423 |
| LMArena Text: business and finance | 1443 | 1381 | DeepSeek V4 Pro 0423 |
| Neither model has a result on the other 7 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index60
| Benchmark | DeepSeek V4 Pro 0423 | Solar Pro 4 | Leader |
|---|---|---|---|
| Design Arena: websites | 1234 | 1176 | DeepSeek V4 Pro 0423 |
| Design Arena: UI components | 1219 | 1147 | DeepSeek V4 Pro 0423 |
| Design Arena: game dev | 1228 | 1169 | DeepSeek V4 Pro 0423 |
| Design Arena: data viz | 1203 | 1177 | DeepSeek V4 Pro 0423 |
| Design Arena: 3D | 1253 | 1178 | DeepSeek V4 Pro 0423 |
| Design Arena: all code categories | 1240 | 1182 | DeepSeek V4 Pro 0423 |
| Design Arena: SVG | 1139 | Not measured | Only DeepSeek V4 Pro 0423 measured |
| Design Arena: ASCII art | 1149 | Not measured | Only DeepSeek V4 Pro 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 Pro 0423 | Solar Pro 4 | Leader |
|---|---|---|---|
| Public Benefits Bench (Vals AI) | 62.9% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| MedScribe (Vals AI) | 75.1% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| Long context reasoning (AA-LCR) | Not measured | 70.7% | Only Solar Pro 4 measured |
| DTBench | 90.7% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| LMCA | 41.2% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| Surface Evolver Bench | 40.0% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| CL-bench Life | 13.5% | Not measured | Only DeepSeek V4 Pro 0423 measured |
| LMArena Text | 1451 | 1388 | DeepSeek V4 Pro 0423 |
| LMArena Text: instruction following | 1445 | 1375 | DeepSeek V4 Pro 0423 |
| LMArena Text: creative writing | 1446 | 1317 | DeepSeek V4 Pro 0423 |
| LMArena Text: English | 1459 | 1414 | DeepSeek V4 Pro 0423 |
| LMArena Text: non-English | 1439 | 1363 | DeepSeek V4 Pro 0423 |
| LMArena Text: Chinese | 1481 | 1422 | DeepSeek V4 Pro 0423 |
| LMArena Text: German | 1458 | 1358 | DeepSeek V4 Pro 0423 |
| LMArena Text: Japanese | 1446 | 1320 | DeepSeek V4 Pro 0423 |
| LMArena Text: Korean | 1409 | 1383 | DeepSeek V4 Pro 0423 |
| LMArena Text: French | 1473 | 1400 | DeepSeek V4 Pro 0423 |
| LMArena Text: Spanish | 1457 | 1409 | DeepSeek V4 Pro 0423 |
| LMArena Text: Russian | 1453 | 1357 | DeepSeek V4 Pro 0423 |
| LMArena Text: Polish | 1461 | 1304 | DeepSeek V4 Pro 0423 |
| LMArena Text: multi-turn | 1468 | 1385 | DeepSeek V4 Pro 0423 |
| LMArena Text: longer queries | 1458 | 1382 | DeepSeek V4 Pro 0423 |
| LMArena Text: writing and language | 1447 | 1344 | DeepSeek V4 Pro 0423 |
| LMArena Text: entertainment and media | 1431 | 1332 | DeepSeek V4 Pro 0423 |
| Neither model has a result on the other 22 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | DeepSeek V4 Pro 0423 | Solar Pro 4 | 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
Solar Pro 4 costs less
Repository review
50K input + 3K output tokens
Solar Pro 4 costs less
Agent loop
200K input + 10K output tokens
Solar Pro 4 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 Pro 0423 | Upstage Solar Pro 4 |
|---|---|---|
| Maker | DeepSeek | Upstage |
| Weights | Open weights | No public weights listed |
| Released | April 24, 2026 | August 10, 2026 |
| Context window | 1.05M | 524K |
| Input $/Mtok | $1.358 | $0.15 |
| Output $/Mtok | $2.976 | $0.60 |
| Coding index | 38.7 | Not benchmarked |
| Independent measurements behind it | 5 | 1 |
| Cost per solved task | $0.57 | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is DeepSeek V4 Pro 0423 better than Solar Pro 4 for coding?
Only DeepSeek V4 Pro 0423 has a coding score, 38.7 on the Vibe Coding Index; Solar Pro 4 has none, so the two cannot be ranked on coding. Pick Solar Pro 4 for output tokens 5.0x cheaper ($0.60 vs $2.976 per million) and work measured by Design Arena: agents building web apps, where it leads.
Which is cheaper, DeepSeek V4 Pro 0423 or Solar Pro 4?
DeepSeek V4 Pro 0423 costs $1.358 per million input tokens and $2.976 per million output tokens; Solar Pro 4 costs $0.15 and $0.60. Cost per solved task is known for DeepSeek V4 Pro 0423 only.
Which has the bigger context window, DeepSeek V4 Pro 0423 or Solar Pro 4?
DeepSeek V4 Pro 0423, with 1.05M tokens against 524K.
How many benchmarks is the DeepSeek V4 Pro 0423 vs Solar Pro 4 comparison based on?
41 benchmarks have a result for both models as of October 22, 2026. DeepSeek V4 Pro 0423's coding index rests on 5 independent benchmarks and Solar Pro 4's on 1. Where only one model has a result, the page says so instead of naming a winner.