Noometry

Model comparison

GPT-4.1 vs Solar Pro4

Solar Pro4 is the stronger model overall, scoring 42.1 to 35.9 on the Noometry Index.

Last verified . 17 shared benchmarks.

GPT-4.1 OpenAI

35.9

Rank #219 Confirmed

Solar Pro4 Upstage

42.1

Rank #121 Confirmed

Summary

  • They share 17 benchmarks with published results for both. GPT-4.1 scores higher in 2 categories and Solar Pro4 in 6 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Solar Pro4 leads 28.5 to 11.7.
  • Solar Pro4 is cheaper at $0.30 / $1.20 per million input/output tokens, against $2 / $8 for GPT-4.1.
  • GPT-4.1 accepts more context: 1.05M tokens versus 524K.

Side by side

GPT-4.1Solar Pro4
ProviderOpenAIUpstage
Noometry Index35.942.1
Released2025-04-142026-08-06
WeightsProprietaryProprietary
Context window1.05M524K
Max output33K131K
Input $ / M tokens$2$0.30
Output $ / M tokens$8$1.20
Results tracked5218

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Category by category

Coding Solar Pro4 leads

GPT-4.1: 34.4 (#238), Solar Pro4: 40.1 (#149)

BenchmarkGPT-4.1Solar Pro4
LMArena Coding13911437
SWE-bench Verified48.5%—
SWE-bench Verified (bash only)39.6%—
Aider Polyglot52.4%—
LMArena WebDev—1371
WeirdML39%—
CadEval42%—
ALE-Bench558.1—

Agentic & Tool Use Not comparable

GPT-4.1: 34.7 (#43), Solar Pro4: —

BenchmarkGPT-4.1Solar Pro4
Berkeley Function Calling Leaderboard54%—

Reasoning Solar Pro4 leads

GPT-4.1: 11.7 (#339), Solar Pro4: 28.5 (#104)

BenchmarkGPT-4.1Solar Pro4
LMArena Hard Prompts13841399
ARC-AGI-20.4%—
SimpleBench27%—
Kagi LLM Benchmark52.3%—
ARC-AGI-15.5%—
Chess Puzzles6%—
EnigmaEval2.2%—
DTBench68.3%—
LMCA25.6%—
Epoch Capabilities Index136.78—
ForecastBench61.5—

Math Solar Pro4 leads

GPT-4.1: 22.3 (#280), Solar Pro4: 38.8 (#128)

BenchmarkGPT-4.1Solar Pro4
LMArena Math13701416
FrontierMath (Tiers 1-3)6%—
OTIS Mock AIME 2024-202538.3%—
Omni-MATH47.1%—
MATH Level 583%—
FrontierMath (Feb 2025 set)5.5%—
FrontierMath Tier 4 (v1)0%—

Knowledge Solar Pro4 leads

GPT-4.1: 37.1 (#160), Solar Pro4: 39.8 (#129)

BenchmarkGPT-4.1Solar Pro4
LMArena Expert13641427
GPQA Diamond66.9%—
Humanity's Last Exam5.4%—
SimpleQA Verified31.1%—
MMLU-Pro81.1%—
Vectara Hallucination Rate5.6%—
GPQA (HELM)65.9%—

Multimodal Not comparable

GPT-4.1: 38.2 (#67), Solar Pro4: —

BenchmarkGPT-4.1Solar Pro4
LMArena Vision1211—
GeoBench72%—

Multilingual Too close to call

GPT-4.1: 49.4 (#133), Solar Pro4: 48.7 (#139)

BenchmarkGPT-4.1Solar Pro4
LMArena Non-English13701361
LMArena Chinese13821415
LMArena French13821397
LMArena German13811364
LMArena Japanese13191309
LMArena Korean13391382
LMArena Russian13771360
LMArena Spanish13761401

Instruction Following Solar Pro4 leads

GPT-4.1: 71.3 (#153), Solar Pro4: 72.7 (#132)

BenchmarkGPT-4.1Solar Pro4
LMArena Instruction Following13671377
IFEval83.8%—

Long Context Solar Pro4 leads

GPT-4.1: 40.0 (#163), Solar Pro4: 42.1 (#130)

BenchmarkGPT-4.1Solar Pro4
LMArena Longer Query13851381
Fiction.LiveBench63.9%—

Writing & Preference GPT-4.1 leads

GPT-4.1: 57.6 (#125), Solar Pro4: 56.5 (#138)

BenchmarkGPT-4.1Solar Pro4
LMArena Text13831386
LMArena Creative Writing13631316
LMArena Multi-Turn13981385
EQ-Bench Creative Writing1420—
WildBench85.4%—

Frequently asked questions

Is GPT-4.1 better than Solar Pro4?

Solar Pro4 is the stronger model overall, scoring 42.1 to 35.9 on the Noometry Index.

Which is cheaper, GPT-4.1 or Solar Pro4?

Solar Pro4 is cheaper. It lists at $0.30 per million input tokens and $1.20 per million output tokens; GPT-4.1 lists at $2 and $8.

Is GPT-4.1 or Solar Pro4 better for coding?

Solar Pro4 scores higher on coding benchmarks: 40.1 versus 34.4 in the Noometry coding category.

Which has the bigger context window?

GPT-4.1 does, with 1.05M tokens against 524K.

How many benchmarks do GPT-4.1 and Solar Pro4 share?

17 benchmarks have published results for both models. GPT-4.1 has 52 scored results on Noometry and Solar Pro4 has 18.

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