Hy3 preview vs Solar Pro 4
Solar Pro 4 leads Hy3 preview on the Artificial Analysis Intelligence Index, 28.2 to 25.3, at about the same output price ($0.60 vs $0.60 per million). Updated October 22, 2026; 32 benchmarks have a result for both.
Hy3 preview or Solar Pro 4: which to pick
Neither model has a coding score yet, so the two cannot be ranked on coding.
Pick Hy3 preview for work measured by LMArena WebDev or LMArena Text: coding, where it leads.
- Shared results
- 32
- Hy3 preview only
- 4
- Solar Pro 4 only
- 13
- Like-for-like categories
- 6 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
Solar Pro 4
Solar Pro 4 leads, 28.2 against 25.3.
Same board, both measured
Agentic work
AA Agentic Index
No call
Only Hy3 preview has a AA Agentic Index result, 24.1.
Directional only
Web design
Design Arena: websites
No call
Only Solar Pro 4 has a Design Arena: websites result, 1176.
Directional only
Long documents
Listed context window
Solar Pro 4
Solar Pro 4 takes 524K tokens against 262K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Solar Pro 4
Hy3 preview $0.0005, Solar Pro 4 $0.0004 per turn.
List prices
At a glance
- Coding index
- Hy3 preview not benchmarked, Solar Pro 4 not benchmarked.
- Widest category
- Knowledge, 4.4 points apart on average over 4 shared benchmarks.
- Widest single gap
- LMArena Text: legal and government: Hy3 preview 1430 against Solar Pro 4 1383, 7.9 points apart on a 0 to 100 scale.
- Output price
- Both cost $0.60 per million output tokens.
- Context window
- Hy3 preview takes 262K 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 | Hy3 preview | Bars | Solar Pro 4 | Ties |
|---|---|---|---|---|
| Coding | 1 | 5 | ||
| Intelligence | 0 | 1 | ||
| Reasoning | 1 | 4 | ||
| Math | 2 | 0 | ||
| Knowledge | 4 | 0 | ||
| General | 11 | 3 | ||
| All shared boards | 19 | 13 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index15
| Benchmark | Hy3 preview | Solar Pro 4 | Leader |
|---|---|---|---|
| LMArena WebDev | 1357 | 1371 | Solar Pro 4 |
| AA Coding Index | 58.8 | 52.7 | Hy3 preview |
| SciCode | Not measured | 48.0% | Only Solar Pro 4 measured |
| Terminal-Bench Hard (Artificial Analysis run) | 34.1% | Not measured | Only Hy3 preview measured |
| ALE-Bench | Not measured | 179.3 | Only Solar Pro 4 measured |
| LMArena Text: coding | 1421 | 1438 | Solar Pro 4 |
| LMArena Text: software and IT | 1423 | 1431 | Solar Pro 4 |
| LMArena WebDev: React | 1349 | 1363 | Solar Pro 4 |
| LMArena WebDev: HTML | 1356 | 1371 | Solar Pro 4 |
| Neither model has a result on the other 30 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | Hy3 preview | Solar Pro 4 | Leader |
|---|---|---|---|
| AA Intelligence Index | 25.3 | 28.2 | Solar Pro 4 |
| Neither model has a result on the other 1 board here | |||
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index3 boards, none shared
| Benchmark | Hy3 preview | Solar Pro 4 | Leader |
|---|---|---|---|
| AA Agentic Index | 24.1 | Not measured | Only Hy3 preview measured |
| Design Arena: agents building web apps | Not measured | 1105 | Only Solar Pro 4 measured |
| τ²-Bench Telecom | 92.7% | Not measured | Only Hy3 preview measured |
| Neither model has a result on the other 38 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index14
| Benchmark | Hy3 preview | Solar Pro 4 | Leader |
|---|---|---|---|
| GPQA Diamond (Artificial Analysis run) | 86.7% | 89.1% | Solar Pro 4 |
| Humanity's Last Exam (Artificial Analysis run) | 27.8% | 29.8% | Solar Pro 4 |
| LMArena Text: hard prompts | 1413 | 1400 | Hy3 preview |
| LMArena Text: expert | 1422 | 1428 | Solar Pro 4 |
| LMArena Text: hard prompts in English | 1416 | 1427 | Solar Pro 4 |
| Neither model has a result on the other 17 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index20
| Benchmark | Hy3 preview | Solar Pro 4 | Leader |
|---|---|---|---|
| LMArena Text: math | 1424 | 1421 | Hy3 preview |
| LMArena Text: mathematical work | 1442 | 1427 | Hy3 preview |
| Neither model has a result on the other 11 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index40
| Benchmark | Hy3 preview | Solar Pro 4 | Leader |
|---|---|---|---|
| LMArena Text: science | 1416 | 1404 | Hy3 preview |
| LMArena Text: medicine and healthcare | 1405 | 1374 | Hy3 preview |
| LMArena Text: legal and government | 1430 | 1383 | Hy3 preview |
| LMArena Text: business and finance | 1397 | 1381 | Hy3 preview |
| Neither model has a result on the other 14 boards here | |||
Web designDirectional onlyPublic boards, shown as published, kept out of the index6 boards, none shared
| Benchmark | Hy3 preview | Solar Pro 4 | Leader |
|---|---|---|---|
| Design Arena: websites | Not measured | 1176 | Only Solar Pro 4 measured |
| Design Arena: UI components | Not measured | 1147 | Only Solar Pro 4 measured |
| Design Arena: game dev | Not measured | 1169 | Only Solar Pro 4 measured |
| Design Arena: data viz | Not measured | 1177 | Only Solar Pro 4 measured |
| Design Arena: 3D | Not measured | 1178 | Only Solar Pro 4 measured |
| Design Arena: all code categories | Not measured | 1182 | Only Solar Pro 4 measured |
| Neither model has a result on the other 3 boards here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index113
| Benchmark | Hy3 preview | Solar Pro 4 | Leader |
|---|---|---|---|
| IFBench | 63.1% | Not measured | Only Hy3 preview measured |
| Long context reasoning (AA-LCR) | 64.7% | 70.7% | Solar Pro 4 |
| LMArena Text | 1401 | 1388 | Hy3 preview |
| LMArena Text: instruction following | 1383 | 1375 | Hy3 preview |
| LMArena Text: creative writing | 1339 | 1317 | Hy3 preview |
| LMArena Text: English | 1409 | 1414 | Solar Pro 4 |
| LMArena Text: non-English | 1390 | 1363 | Hy3 preview |
| LMArena Text: Chinese | 1435 | 1422 | Hy3 preview |
| LMArena Text: German | Not measured | 1358 | Only Solar Pro 4 measured |
| LMArena Text: Japanese | Not measured | 1320 | Only Solar Pro 4 measured |
| LMArena Text: Korean | Not measured | 1383 | Only Solar Pro 4 measured |
| LMArena Text: French | 1425 | 1400 | Hy3 preview |
| LMArena Text: Spanish | 1399 | 1409 | Solar Pro 4 |
| LMArena Text: Russian | 1399 | 1357 | Hy3 preview |
| LMArena Text: Polish | Not measured | 1304 | Only Solar Pro 4 measured |
| LMArena Text: multi-turn | 1411 | 1385 | Hy3 preview |
| LMArena Text: longer queries | 1402 | 1382 | Hy3 preview |
| LMArena Text: writing and language | 1370 | 1344 | Hy3 preview |
| LMArena Text: entertainment and media | 1352 | 1332 | Hy3 preview |
| 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
| Benchmark | Hy3 preview | 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 | Tencent Hy3 preview | Upstage Solar Pro 4 |
|---|---|---|
| Maker | Tencent | Upstage |
| Weights | Open weights | No public weights listed |
| Released | April 22, 2026 | August 10, 2026 |
| Context window | 262K | 524K |
| Input $/Mtok | $0.18 | $0.15 |
| Output $/Mtok | $0.60 | $0.60 |
| Coding index | Not benchmarked | Not benchmarked |
| Independent measurements behind it | 1 | 1 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Hy3 preview better than Solar Pro 4 for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Pick Hy3 preview for work measured by LMArena WebDev or LMArena Text: coding, where it leads.
Which is cheaper, Hy3 preview or Solar Pro 4?
Hy3 preview costs $0.18 per million input tokens and $0.60 per million output tokens; Solar Pro 4 costs $0.15 and $0.60. Cost per solved task is known for neither of them.
Which has the bigger context window, Hy3 preview or Solar Pro 4?
Solar Pro 4, with 524K tokens against 262K.
How many benchmarks is the Hy3 preview vs Solar Pro 4 comparison based on?
32 benchmarks have a result for both models as of October 22, 2026. Hy3 preview's coding index rests on 1 independent benchmark and Solar Pro 4's on 1. Where only one model has a result, the page says so instead of naming a winner.