Noometry

Model comparison

Claude Opus 4.1 vs Solar Pro4

Solar Pro4 is the stronger model overall, scoring 42.1 to 41.0 on the Noometry Index.

Last verified . 18 shared benchmarks.

Claude Opus 4.1 Anthropic

41.0

Rank #142 Confirmed

Solar Pro4 Upstage

42.1

Rank #121 Confirmed

Summary

  • They share 18 benchmarks with published results for both. Claude Opus 4.1 scores higher in 7 categories and Solar Pro4 in 1 category; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where Solar Pro4 leads 38.8 to 22.3.
  • Solar Pro4 is cheaper at $0.30 / $1.20 per million input/output tokens, against $15 / $75 for Claude Opus 4.1.
  • Solar Pro4 accepts more context: 524K tokens versus 200K.

Side by side

Claude Opus 4.1Solar Pro4
ProviderAnthropicUpstage
Noometry Index41.042.1
Released2025-08-052026-08-06
WeightsProprietaryProprietary
Context window200K524K
Max output32K131K
Input $ / M tokens$15$0.30
Output $ / M tokens$75$1.20
Results tracked4818

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Category by category

Coding Claude Opus 4.1 leads

Claude Opus 4.1: 44.4 (#73), Solar Pro4: 40.1 (#149)

BenchmarkClaude Opus 4.1Solar Pro4
LMArena WebDev13901371
LMArena Coding14791437
SWE-bench Verified73.3%—
WeirdML45.9%—
ALE-Bench674.77—
AlgoTune1.34—

Agentic & Tool Use Not comparable

Claude Opus 4.1: 35.0 (#41), Solar Pro4: —

BenchmarkClaude Opus 4.1Solar Pro4
Terminal-Bench38%—
GDPval43.6%—
Cybench42%—
DeepResearch Bench48.3%—
LMArena Search1148—
METR Time Horizons66.8%—

Reasoning Claude Opus 4.1 leads

Claude Opus 4.1: 32.2 (#76), Solar Pro4: 28.5 (#104)

BenchmarkClaude Opus 4.1Solar Pro4
LMArena Hard Prompts14431399
SimpleBench60%—
Chess Puzzles7%—
EnigmaEval7.2%—
EBR-Bench7.9%—
Mystery Game Puzzles21%—
DTBench80%—
LMCA37.1%—
Epoch Capabilities Index144.12—
ForecastBench62—

Math Solar Pro4 leads

Claude Opus 4.1: 22.3 (#277), Solar Pro4: 38.8 (#128)

BenchmarkClaude Opus 4.1Solar Pro4
LMArena Math14311416
FrontierMath (Tiers 1-3)12.6%—
FrontierMath Tier 42.4%—
OTIS Mock AIME 2024-202568.9%—
FrontierMath (Feb 2025 set)7.2%—
FrontierMath Tier 4 (v1)4.2%—

Knowledge Claude Opus 4.1 leads

Claude Opus 4.1: 42.0 (#101), Solar Pro4: 39.8 (#129)

BenchmarkClaude Opus 4.1Solar Pro4
LMArena Expert14391427
GPQA Diamond77.3%—
Humanity's Last Exam11.5%—
Confabulations17.1%—
Vectara Hallucination Rate11.8%—

Multimodal Not comparable

Claude Opus 4.1: 26.8 (#119), Solar Pro4: —

BenchmarkClaude Opus 4.1Solar Pro4
VPCT35%—

Multilingual Claude Opus 4.1 leads

Claude Opus 4.1: 52.0 (#95), Solar Pro4: 48.7 (#139)

BenchmarkClaude Opus 4.1Solar Pro4
LMArena Non-English14051361
LMArena Chinese14271415
LMArena French14311397
LMArena German14131364
LMArena Japanese13781309
LMArena Korean13801382
LMArena Russian14221360
LMArena Spanish14481401

Instruction Following Claude Opus 4.1 leads

Claude Opus 4.1: 75.6 (#58), Solar Pro4: 72.7 (#132)

BenchmarkClaude Opus 4.1Solar Pro4
LMArena Instruction Following14351377

Long Context Claude Opus 4.1 leads

Claude Opus 4.1: 44.5 (#63), Solar Pro4: 42.1 (#130)

BenchmarkClaude Opus 4.1Solar Pro4
LMArena Longer Query14551381

Writing & Preference Claude Opus 4.1 leads

Claude Opus 4.1: 62.4 (#74), Solar Pro4: 56.5 (#138)

BenchmarkClaude Opus 4.1Solar Pro4
LMArena Text14191386
LMArena Creative Writing14121316
LMArena Multi-Turn14441385
Short-Story Creative Writing84.7%—

Frequently asked questions

Is Claude Opus 4.1 better than Solar Pro4?

Solar Pro4 is the stronger model overall, scoring 42.1 to 41.0 on the Noometry Index.

Which is cheaper, Claude Opus 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; Claude Opus 4.1 lists at $15 and $75.

Is Claude Opus 4.1 or Solar Pro4 better for coding?

Claude Opus 4.1 scores higher on coding benchmarks: 44.4 versus 40.1 in the Noometry coding category.

Which has the bigger context window?

Solar Pro4 does, with 524K tokens against 200K.

How many benchmarks do Claude Opus 4.1 and Solar Pro4 share?

18 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and Solar Pro4 has 18.

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