Noometry

Model comparison

GPT-6.1 Sol vs Hy4 preview

GPT-6.1 Sol is the stronger model overall, scoring 65.6 to 45.3 on the Noometry Index. Hy4 preview costs 3.6× less per token, which makes it the better buy when GPT-6.1 Sol's lead doesn't matter for your workload.

Last verified . 3 shared benchmarks.

GPT-6.1 Sol OpenAI

65.6

Rank #6 Confirmed

Hy4 preview Tencent

45.3

Rank #73 Reported

Summary

  • They share 3 benchmarks with published results for both. GPT-6.1 Sol scores higher in 3 categories and Hy4 preview in 0 categories; 3 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where GPT-6.1 Sol leads 81.9 to 31.9.
  • The biggest single-benchmark swing is NYT Connections (extended): 95.5% for GPT-6.1 Sol and 68.2% for Hy4 preview.
  • Hy4 preview is cheaper at $0.75 / $2.25 per million input/output tokens, against $2 / $10 for GPT-6.1 Sol.
  • GPT-6.1 Sol accepts more context: 1.05M tokens versus 1.05M.
  • Hy4 preview has downloadable open weights; the other is API-only.

Side by side

GPT-6.1 SolHy4 preview
ProviderOpenAITencent
Noometry Index65.645.3
Released2026-09-292026-08-28
WeightsProprietaryOpen
Context window1.05M1.05M
Max output128K64K
Input $ / M tokens$2$0.75
Output $ / M tokens$10$2.25
Results tracked343

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Category by category

Coding GPT-6.1 Sol leads

GPT-6.1 Sol: 63.2 (#8), Hy4 preview: 51.6 (#38)

BenchmarkGPT-6.1 SolHy4 preview
LMArena WebDev17551632
DeepSWE75.2%—
FrontierCode50.2%—
SciCode55.8%—
LMArena Coding1487—

Agentic & Tool Use Not comparable

GPT-6.1 Sol: 39.6 (#26), Hy4 preview: —

BenchmarkGPT-6.1 SolHy4 preview
APEX-Agents60%—
GDP.pdf32%—

Reasoning GPT-6.1 Sol leads

GPT-6.1 Sol: 81.9 (#2), Hy4 preview: 31.9 (#79)

BenchmarkGPT-6.1 SolHy4 preview
NYT Connections (extended)95.5%68.2%
ARC-AGI-294.2%—
ARC-AGI-198.5%—
CritPt31.7%—
Chess Puzzles61%—
EBR-Bench54.3%—
LMArena Hard Prompts1466—
Mystery Game Puzzles80%—
Epoch Capabilities Index166.09—

Math GPT-6.1 Sol leads

GPT-6.1 Sol: 93.7 (#1), Hy4 preview: 55.7 (#42)

BenchmarkGPT-6.1 SolHy4 preview
ProofBench99%75%
FrontierMath (Tiers 1-3)93.7%—
FrontierMath Tier 4100%—
OTIS Mock AIME 2024-2025100%—
LMArena Math1464—

Knowledge Not comparable

GPT-6.1 Sol: 71.8 (#4), Hy4 preview: —

BenchmarkGPT-6.1 SolHy4 preview
GPQA Diamond95.4%—
SimpleQA Verified73.9%—
LMArena Expert1502—

Multimodal Not comparable

GPT-6.1 Sol: 52.7 (#5), Hy4 preview: —

BenchmarkGPT-6.1 SolHy4 preview
LMArena Vision1288—
Furniture Assembly80%—

Multilingual Not comparable

GPT-6.1 Sol: 54.3 (#46), Hy4 preview: —

BenchmarkGPT-6.1 SolHy4 preview
LMArena Non-English1438—
LMArena Chinese1477—
LMArena Russian1455—

Instruction Following Not comparable

GPT-6.1 Sol: 77.0 (#29), Hy4 preview: —

BenchmarkGPT-6.1 SolHy4 preview
LMArena Instruction Following1468—

Long Context Not comparable

GPT-6.1 Sol: 44.9 (#54), Hy4 preview: —

BenchmarkGPT-6.1 SolHy4 preview
LMArena Longer Query1465—

Writing & Preference Not comparable

GPT-6.1 Sol: 63.6 (#63), Hy4 preview: —

BenchmarkGPT-6.1 SolHy4 preview
LMArena Text1447—
LMArena Creative Writing1432—
LMArena Multi-Turn1449—

Frequently asked questions

Is GPT-6.1 Sol better than Hy4 preview?

GPT-6.1 Sol is the stronger model overall, scoring 65.6 to 45.3 on the Noometry Index. Hy4 preview costs 3.6× less per token, which makes it the better buy when GPT-6.1 Sol's lead doesn't matter for your workload.

Which is cheaper, GPT-6.1 Sol or Hy4 preview?

Hy4 preview is cheaper. It lists at $0.75 per million input tokens and $2.25 per million output tokens; GPT-6.1 Sol lists at $2 and $10.

Is GPT-6.1 Sol or Hy4 preview better for coding?

GPT-6.1 Sol scores higher on coding benchmarks: 63.2 versus 51.6 in the Noometry coding category.

Which has the bigger context window?

GPT-6.1 Sol does, with 1.05M tokens against 1.05M.

How many benchmarks do GPT-6.1 Sol and Hy4 preview share?

3 benchmarks have published results for both models. GPT-6.1 Sol has 34 scored results on Noometry and Hy4 preview has 3.

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