GPT-4 Turbo vs Solar Pro 4
Solar Pro 4 leads GPT-4 Turbo on the Artificial Analysis Intelligence Index, 28.2 to 7.0, and Solar Pro 4 costs 50.0x less per output token ($0.60 vs $30.00 per million). Updated October 22, 2026; 31 benchmarks have a result for both.
GPT-4 Turbo or Solar Pro 4: which to pick
Neither model has a coding score yet, so the two cannot be ranked on coding.
Pick GPT-4 Turbo for work measured by AA Coding Index or LMArena Text: coding, where it leads.
- Shared results
- 31
- GPT-4 Turbo only
- 11
- Solar Pro 4 only
- 14
- 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 7.0.
Same board, both measured
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 128K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Solar Pro 4
GPT-4 Turbo $0.025, Solar Pro 4 $0.0004 per turn.
List prices
At a glance
- Coding index
- GPT-4 Turbo not benchmarked, Solar Pro 4 not benchmarked.
- Widest category
- Coding, 28.9 points apart on average over 3 shared benchmarks.
- Widest single gap
- LMArena Text: expert: GPT-4 Turbo 1223 against Solar Pro 4 1428, 34.1 points apart on a 0 to 100 scale.
- Output price
- GPT-4 Turbo $30.00 against Solar Pro 4 $0.60 per million output tokens, 50.0x apart.
- Context window
- GPT-4 Turbo takes 128K 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 | GPT-4 Turbo | Bars | Solar Pro 4 | Ties |
|---|---|---|---|---|
| Coding | 0 | 3 | ||
| Intelligence | 0 | 1 | ||
| Reasoning | 0 | 4 | ||
| Math | 0 | 2 | ||
| Knowledge | 0 | 4 | ||
| General | 0 | 17 | ||
| All shared boards | 0 | 31 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index03
| Benchmark | GPT-4 Turbo | Solar Pro 4 | Leader |
|---|---|---|---|
| LMArena WebDev | Not measured | 1371 | Only Solar Pro 4 measured |
| AA Coding Index | 21.5 | 52.7 | Solar Pro 4 |
| LiveCodeBench (Artificial Analysis run) | 29.1% | Not measured | Only GPT-4 Turbo measured |
| SciCode | Not measured | 48.0% | Only Solar Pro 4 measured |
| ALE-Bench | Not measured | 179.3 | Only Solar Pro 4 measured |
| LMArena Text: coding | 1268 | 1438 | Solar Pro 4 |
| LMArena Text: software and IT | 1267 | 1431 | Solar Pro 4 |
| LMArena WebDev: React | Not measured | 1363 | Only Solar Pro 4 measured |
| LMArena WebDev: HTML | Not measured | 1371 | Only Solar Pro 4 measured |
| Neither model has a result on the other 30 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | GPT-4 Turbo | Solar Pro 4 | Leader |
|---|---|---|---|
| AA Intelligence Index | 7.0 | 28.2 | Solar Pro 4 |
| Epoch Capabilities Index | 127.3 | Not measured | Only GPT-4 Turbo measured |
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index1 board, none shared
| Benchmark | GPT-4 Turbo | Solar Pro 4 | Leader |
|---|---|---|---|
| Design Arena: agents building web apps | Not measured | 1105 | Only Solar Pro 4 measured |
| Neither model has a result on the other 40 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index04
| Benchmark | GPT-4 Turbo | Solar Pro 4 | Leader |
|---|---|---|---|
| GPQA Diamond (Artificial Analysis run) | Not measured | 89.1% | Only Solar Pro 4 measured |
| Humanity's Last Exam (Artificial Analysis run) | 3.1% | 29.8% | Solar Pro 4 |
| LMArena Text: hard prompts | 1251 | 1400 | Solar Pro 4 |
| LMArena Text: expert | 1223 | 1428 | Solar Pro 4 |
| LMArena Text: hard prompts in English | 1266 | 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 index02
| Benchmark | GPT-4 Turbo | Solar Pro 4 | Leader |
|---|---|---|---|
| LMArena Text: math | 1272 | 1421 | Solar Pro 4 |
| LMArena Text: mathematical work | 1268 | 1427 | Solar Pro 4 |
| Neither model has a result on the other 11 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index04
| Benchmark | GPT-4 Turbo | Solar Pro 4 | Leader |
|---|---|---|---|
| LegalBench (Vals AI) | 80.5% | Not measured | Only GPT-4 Turbo measured |
| MedQA (Vals AI) | 82.0% | Not measured | Only GPT-4 Turbo measured |
| MMLU Pro (Artificial Analysis run) | 69.4% | Not measured | Only GPT-4 Turbo measured |
| MMLU | 81.3% | Not measured | Only GPT-4 Turbo measured |
| LMArena Text: science | 1256 | 1404 | Solar Pro 4 |
| LMArena Text: medicine and healthcare | 1239 | 1374 | Solar Pro 4 |
| LMArena Text: legal and government | 1265 | 1383 | Solar Pro 4 |
| LMArena Text: business and finance | 1222 | 1381 | Solar Pro 4 |
| Neither model has a result on the other 10 boards here | |||
Web designDirectional onlyPublic boards, shown as published, kept out of the index6 boards, none shared
| Benchmark | GPT-4 Turbo | 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 | 1178 | Only Solar Pro 4 measured |
| Design Arena: 3D | Not measured | 1178 | Only Solar Pro 4 measured |
| Design Arena: all code categories | Not measured | 1181 | 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 index017
| Benchmark | GPT-4 Turbo | Solar Pro 4 | Leader |
|---|---|---|---|
| Long context reasoning (AA-LCR) | Not measured | 70.7% | Only Solar Pro 4 measured |
| DTBench | 61.6% | Not measured | Only GPT-4 Turbo measured |
| LMCA | 9.8% | Not measured | Only GPT-4 Turbo measured |
| LMArena Text | 1272 | 1388 | Solar Pro 4 |
| LMArena Text: instruction following | 1249 | 1375 | Solar Pro 4 |
| LMArena Text: creative writing | 1268 | 1317 | Solar Pro 4 |
| LMArena Vision | 1090 | Not measured | Only GPT-4 Turbo measured |
| LMArena Text: English | 1291 | 1414 | Solar Pro 4 |
| LMArena Text: non-English | 1245 | 1363 | Solar Pro 4 |
| LMArena Text: Chinese | 1242 | 1422 | Solar Pro 4 |
| LMArena Text: German | 1259 | 1358 | Solar Pro 4 |
| LMArena Text: Japanese | 1194 | 1320 | Solar Pro 4 |
| LMArena Text: Korean | 1187 | 1383 | Solar Pro 4 |
| LMArena Text: French | 1276 | 1400 | Solar Pro 4 |
| LMArena Text: Spanish | 1260 | 1409 | Solar Pro 4 |
| LMArena Text: Russian | 1259 | 1357 | Solar Pro 4 |
| LMArena Text: Polish | 1302 | 1304 | Solar Pro 4 |
| LMArena Text: multi-turn | 1267 | 1385 | Solar Pro 4 |
| LMArena Text: longer queries | 1254 | 1382 | Solar Pro 4 |
| LMArena Text: writing and language | 1279 | 1344 | Solar Pro 4 |
| LMArena Text: entertainment and media | 1258 | 1332 | Solar Pro 4 |
| LMArena Vision: English | 1097 | Not measured | Only GPT-4 Turbo measured |
| LMArena Vision: Chinese | 1045 | Not measured | Only GPT-4 Turbo measured |
| Neither model has a result on the other 23 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | GPT-4 Turbo | 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 | OpenAI GPT-4 Turbo | Upstage Solar Pro 4 |
|---|---|---|
| Maker | OpenAI | Upstage |
| Weights | No public weights listed | No public weights listed |
| Released | April 9, 2024 | August 10, 2026 |
| Context window | 128K | 524K |
| Input $/Mtok | $10.00 | $0.15 |
| Output $/Mtok | $30.00 | $0.60 |
| Coding index | Not benchmarked | Not benchmarked |
| Independent measurements behind it | 0 | 1 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is GPT-4 Turbo better than Solar Pro 4 for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Pick GPT-4 Turbo for work measured by AA Coding Index or LMArena Text: coding, where it leads.
Which is cheaper, GPT-4 Turbo or Solar Pro 4?
GPT-4 Turbo costs $10.00 per million input tokens and $30.00 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, GPT-4 Turbo or Solar Pro 4?
Solar Pro 4, with 524K tokens against 128K.
How many benchmarks is the GPT-4 Turbo vs Solar Pro 4 comparison based on?
31 benchmarks have a result for both models as of October 22, 2026. GPT-4 Turbo's coding index rests on 0 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.