Model comparison

Ministral 8B vs Solar Pro4

Solar Pro4 is the stronger model overall, scoring 42.1 to 28.2 on the Noometry Index. Ministral 8B costs 3.5× less per token, which makes it the better buy when Solar Pro4's lead doesn't matter for your workload.

Last verified October 10, 2026. 12 shared benchmarks.

Ministral 8B

Mistral AI

28.2

Rank #325 Confirmed

Solar Pro4

Upstage

42.1

Rank #121 Confirmed

Summary

They share 12 benchmarks with published results for both. Ministral 8B scores higher in 0 categories and Solar Pro4 in 8 categories; 8 gaps are clear of the uncertainty.
The widest gap is in knowledge, where Solar Pro4 leads 39.8 to 12.6.
Ministral 8B is cheaper at $0.15 / $0.15 per million input/output tokens, against $0.30 / $1.20 for Solar Pro4.
Solar Pro4 accepts more context: 524K tokens versus 262K.
Ministral 8B has downloadable open weights; the other is API-only.

Side by side

Ministral 8B and Solar Pro4 specifications
	Ministral 8B	Solar Pro4
Provider	Mistral AI	Upstage
Noometry Index	28.2	42.1
Released	2024-10-01	2026-08-06
Weights	Open	Proprietary
Context window	262K	524K
Max output	262K	131K
Input $ / M tokens	$0.15	$0.30
Output $ / M tokens	$0.15	$1.20
Results tracked	17	18

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Category by category

Coding Solar Pro4 leads

Ministral 8B: 35.0 (#230), Solar Pro4: 40.1 (#149)

Coding benchmarks
Benchmark	Ministral 8B	Solar Pro4
LMArena Coding	1202	1437
LMArena WebDev	—	1371

Agentic & Tool Use Not comparable

Ministral 8B: 16.4 (#148), Solar Pro4: —

Agentic & Tool Use benchmarks
Benchmark	Ministral 8B	Solar Pro4
Berkeley Function Calling Leaderboard	11.1%	—

Reasoning Solar Pro4 leads

Ministral 8B: 18.4 (#281), Solar Pro4: 28.5 (#104)

Reasoning benchmarks
Benchmark	Ministral 8B	Solar Pro4
LMArena Hard Prompts	1191	1399
DTBench	45.7%	—

Math Solar Pro4 leads

Ministral 8B: 25.7 (#267), Solar Pro4: 38.8 (#128)

Math benchmarks
Benchmark	Ministral 8B	Solar Pro4
LMArena Math	1188	1416
MATH Level 5	14.9%	—

Knowledge Solar Pro4 leads

Ministral 8B: 12.6 (#297), Solar Pro4: 39.8 (#129)

Knowledge benchmarks
Benchmark	Ministral 8B	Solar Pro4
LMArena Expert	1170	1427
GPQA Diamond	27.1%	—
Vectara Hallucination Rate	7.4%	—

Multilingual Solar Pro4 leads

Ministral 8B: 35.1 (#247), Solar Pro4: 48.7 (#139)

Multilingual benchmarks
Benchmark	Ministral 8B	Solar Pro4
LMArena Non-English	1165	1361
LMArena Chinese	1193	1415
LMArena Russian	1195	1360
LMArena French	—	1397
LMArena German	—	1364
LMArena Japanese	—	1309
LMArena Korean	—	1382
LMArena Spanish	—	1401

Instruction Following Solar Pro4 leads

Ministral 8B: 60.5 (#250), Solar Pro4: 72.7 (#132)

Instruction Following benchmarks
Benchmark	Ministral 8B	Solar Pro4
LMArena Instruction Following	1161	1377

Long Context Solar Pro4 leads

Ministral 8B: 36.7 (#227), Solar Pro4: 42.1 (#130)

Long Context benchmarks
Benchmark	Ministral 8B	Solar Pro4
LMArena Longer Query	1212	1381

Writing & Preference Solar Pro4 leads

Ministral 8B: 39.6 (#246), Solar Pro4: 56.5 (#138)

Writing & Preference benchmarks
Benchmark	Ministral 8B	Solar Pro4
LMArena Text	1191	1386
LMArena Creative Writing	1175	1316
LMArena Multi-Turn	1166	1385

Frequently asked questions

Is Ministral 8B better than Solar Pro4?

Which is cheaper, Ministral 8B or Solar Pro4?

Ministral 8B is cheaper. It lists at $0.15 per million input tokens and $0.15 per million output tokens; Solar Pro4 lists at $0.30 and $1.20.

Is Ministral 8B or Solar Pro4 better for coding?

Solar Pro4 scores higher on coding benchmarks: 40.1 versus 35.0 in the Noometry coding category.

Which has the bigger context window?

Solar Pro4 does, with 524K tokens against 262K.

How many benchmarks do Ministral 8B and Solar Pro4 share?

12 benchmarks have published results for both models. Ministral 8B has 17 scored results on Noometry and Solar Pro4 has 18.