Noometry

Model comparison

GPT-4.1 nano vs Hy4 preview

Hy4 preview is the stronger model overall, scoring 45.3 to 27.9 on the Noometry Index. GPT-4.1 nano costs 7.1× less per token, which makes it the better buy when Hy4 preview's lead doesn't matter for your workload.

Last verified . 0 shared benchmarks.

GPT-4.1 nano OpenAI

27.9

Rank #327 Confirmed

Hy4 preview Tencent

45.3

Rank #73 Reported

Summary

  • The widest gap is in math, where Hy4 preview leads 55.7 to 26.9.
  • GPT-4.1 nano is cheaper at $0.10 / $0.40 per million input/output tokens, against $0.83 / $2.50 for Hy4 preview.
  • Hy4 preview accepts more context: 1.05M tokens versus 1.05M.
  • Hy4 preview has downloadable open weights; the other is API-only.

Side by side

GPT-4.1 nanoHy4 preview
ProviderOpenAITencent
Noometry Index27.945.3
Released2025-04-142026-08-28
WeightsProprietaryOpen
Context window1.05M1.05M
Max output33K64K
Input $ / M tokens$0.10$0.83
Output $ / M tokens$0.40$2.50
Results tracked383

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Category by category

Coding Hy4 preview leads

GPT-4.1 nano: 24.1 (#330), Hy4 preview: 51.6 (#38)

BenchmarkGPT-4.1 nanoHy4 preview
Aider Polyglot8.9%—
LMArena WebDev—1632
SciCode25.9%—
WeirdML19%—
LMArena Coding1306—

Agentic & Tool Use Not comparable

GPT-4.1 nano: 26.5 (#104), Hy4 preview: —

BenchmarkGPT-4.1 nanoHy4 preview
Berkeley Function Calling Leaderboard33%—

Reasoning Hy4 preview leads

GPT-4.1 nano: 8.5 (#349), Hy4 preview: 31.9 (#79)

BenchmarkGPT-4.1 nanoHy4 preview
ARC-AGI-20%—
Kagi LLM Benchmark33.3%—
NYT Connections (extended)—68.2%
ARC-AGI-10%—
CritPt0%—
LMArena Hard Prompts1286—
DTBench52.5%—
LMCA5.5%—
Epoch Capabilities Index129.62—

Math Hy4 preview leads

GPT-4.1 nano: 26.9 (#252), Hy4 preview: 55.7 (#42)

BenchmarkGPT-4.1 nanoHy4 preview
OTIS Mock AIME 2024-202528.9%—
ProofBench—75%
Omni-MATH36.7%—
LMArena Math1274—
MATH Level 570%—
FrontierMath (Feb 2025 set)1%—

Knowledge Not comparable

GPT-4.1 nano: 21.8 (#273), Hy4 preview: —

BenchmarkGPT-4.1 nanoHy4 preview
GPQA Diamond48.9%—
SimpleQA Verified6%—
MMLU-Pro55%—
GPQA (HELM)50.7%—
LMArena Expert1272—

Multimodal Not comparable

GPT-4.1 nano: 29.2 (#113), Hy4 preview: —

BenchmarkGPT-4.1 nanoHy4 preview
LMArena Vision1063—

Multilingual Not comparable

GPT-4.1 nano: 41.6 (#205), Hy4 preview: —

BenchmarkGPT-4.1 nanoHy4 preview
LMArena Non-English1260—
LMArena Chinese1270—
LMArena German1288—
LMArena Japanese1198—
LMArena Russian1261—

Instruction Following Not comparable

GPT-4.1 nano: 67.8 (#193), Hy4 preview: —

BenchmarkGPT-4.1 nanoHy4 preview
IFEval84.3%—
LMArena Instruction Following1267—

Long Context Not comparable

GPT-4.1 nano: 23.7 (#296), Hy4 preview: —

BenchmarkGPT-4.1 nanoHy4 preview
Fiction.LiveBench25%—
LMArena Longer Query1283—

Writing & Preference Not comparable

GPT-4.1 nano: 40.5 (#243), Hy4 preview: —

BenchmarkGPT-4.1 nanoHy4 preview
LMArena Text1285—
LMArena Creative Writing1260—
EQ-Bench Creative Writing946—
WildBench81.2%—
LMArena Multi-Turn1277—

Frequently asked questions

Is GPT-4.1 nano better than Hy4 preview?

Hy4 preview is the stronger model overall, scoring 45.3 to 27.9 on the Noometry Index. GPT-4.1 nano costs 7.1× less per token, which makes it the better buy when Hy4 preview's lead doesn't matter for your workload.

Which is cheaper, GPT-4.1 nano or Hy4 preview?

GPT-4.1 nano is cheaper. It lists at $0.10 per million input tokens and $0.40 per million output tokens; Hy4 preview lists at $0.83 and $2.50.

Is GPT-4.1 nano or Hy4 preview better for coding?

Hy4 preview scores higher on coding benchmarks: 51.6 versus 24.1 in the Noometry coding category.

Which has the bigger context window?

Hy4 preview does, with 1.05M tokens against 1.05M.

How many benchmarks do GPT-4.1 nano and Hy4 preview share?

0 benchmarks have published results for both models. GPT-4.1 nano has 38 scored results on Noometry and Hy4 preview has 3.

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