# Phi-4 vs Solar Pro4

> Solar Pro4 is the stronger model overall, scoring 41.5 to 30.9 on the Noometry Index. Phi-4 costs 6.0× less per token, which makes it the better buy when Solar Pro4's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/phi-4-vs-solar-pro4
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Phi-4 scores higher in 0 categories and Solar Pro4 in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Solar Pro4 leads 36.1 to 19.6.
- Phi-4 is cheaper at $0.07 / $0.14 per million input/output tokens, against $0.30 / $1.20 for Solar Pro4.
- Solar Pro4 accepts more context: 524K tokens versus 128K.
- Phi-4 has downloadable open weights; the other is API-only.

## Snapshot

| | Phi-4 | Solar Pro4 |
|---|---|---|
| Provider | Microsoft | Upstage |
| Noometry Index | 30.9 | 41.5 |
| Rank | 269 | 123 |
| Context | 128K | 524K |
| Input $/M | $0.07 | $0.30 |
| Output $/M | $0.14 | $1.20 |
| Weights | Open | Proprietary |

## Coding

- Phi-4: 33.8 (#237)
- Solar Pro4: 39.9 (#135)

| Benchmark | Phi-4 | Solar Pro4 |
|---|---|---|
| LMArena Coding | 1231 | 1439 |
| LMArena WebDev | — | 1371 |
| BigCodeBench Instruct | 45.5% | — |
| LiveBench Coding | 30.7% | — |
| BigCodeBench Complete | 55.4% | — |

## Agentic & Tool Use

- Phi-4: 22.6 (#120)
- Solar Pro4: —

| Benchmark | Phi-4 | Solar Pro4 |
|---|---|---|
| Berkeley Function Calling Leaderboard | 28.8% | — |
| BALROG | 11.6% | — |

## Reasoning

- Phi-4: 17.0 (#287)
- Solar Pro4: 27.3 (#107)

| Benchmark | Phi-4 | Solar Pro4 |
|---|---|---|
| LMArena Hard Prompts | 1220 | 1398 |
| Chess Puzzles | 1% | — |
| LiveBench Reasoning | 47.8% | — |
| LiveBench Data Analysis | 45.2% | — |
| Epoch Capabilities Index | 130.43 | — |
| LiveBench | 41.6% | — |

## Math

- Phi-4: 19.6 (#279)
- Solar Pro4: 36.1 (#129)

| Benchmark | Phi-4 | Solar Pro4 |
|---|---|---|
| LMArena Math | 1246 | 1418 |
| OTIS Mock AIME 2024-2025 | 13.8% | — |
| LiveBench Math | 42% | — |
| MATH Level 5 | 64.9% | — |

## Knowledge

- Phi-4: 32.5 (#204)
- Solar Pro4: 39.0 (#128)

| Benchmark | Phi-4 | Solar Pro4 |
|---|---|---|
| LMArena Expert | 1203 | 1421 |
| GPQA Diamond | 56.1% | — |
| Confabulations | 29.4% | — |
| Vectara Hallucination Rate | 3.7% | — |
| MMLU | 84.8% | — |

## Multilingual

- Phi-4: 37.4 (#232)
- Solar Pro4: 49.0 (#134)

| Benchmark | Phi-4 | Solar Pro4 |
|---|---|---|
| LMArena Non-English | 1197 | 1362 |
| LMArena Chinese | 1211 | 1417 |
| LMArena French | 1223 | 1403 |
| LMArena German | 1222 | 1351 |
| LMArena Japanese | 1158 | 1300 |
| LMArena Korean | 1151 | 1383 |
| LMArena Russian | 1209 | 1360 |
| LMArena Spanish | 1234 | 1408 |

## Instruction Following

- Phi-4: 60.6 (#246)
- Solar Pro4: 72.8 (#128)

| Benchmark | Phi-4 | Solar Pro4 |
|---|---|---|
| LMArena Instruction Following | 1201 | 1376 |
| LiveBench Instruction Following | 58.4% | — |

## Long Context

- Phi-4: 36.9 (#221)
- Solar Pro4: 42.0 (#125)

| Benchmark | Phi-4 | Solar Pro4 |
|---|---|---|
| LMArena Longer Query | 1217 | 1379 |

## Writing & Preference

- Phi-4: 40.7 (#239)
- Solar Pro4: 56.7 (#133)

| Benchmark | Phi-4 | Solar Pro4 |
|---|---|---|
| LMArena Text | 1217 | 1386 |
| LMArena Creative Writing | 1182 | 1313 |
| LMArena Multi-Turn | 1206 | 1391 |
| Short-Story Creative Writing | 62.6% | — |
| LiveBench Language | 25.6% | — |

## FAQ

### Is Phi-4 better than Solar Pro4?

Solar Pro4 is the stronger model overall, scoring 41.5 to 30.9 on the Noometry Index. Phi-4 costs 6.0× less per token, which makes it the better buy when Solar Pro4's lead doesn't matter for your workload.

### Which is cheaper, Phi-4 or Solar Pro4?

Phi-4 is cheaper. It lists at $0.07 per million input tokens and $0.14 per million output tokens; Solar Pro4 lists at $0.30 and $1.20.

### Is Phi-4 or Solar Pro4 better for coding?

Solar Pro4 scores higher on coding benchmarks: 39.9 versus 33.8 in the Noometry coding category.

### Which has the bigger context window?

Solar Pro4 does, with 524K tokens against 128K.

### How many benchmarks do Phi-4 and Solar Pro4 share?

17 benchmarks have published results for both models. Phi-4 has 37 scored results on Noometry and Solar Pro4 has 18.