Noometry

Model comparison

GPT-5 Mini vs Yi-1.5-34B

GPT-5 Mini is the stronger model overall, scoring 41.8 to 30.6 on the Noometry Index.

Last verified . 19 shared benchmarks.

GPT-5 Mini OpenAI

41.8

Rank #128 Confirmed

Yi-1.5-34B 01.AI

30.6

Rank #289 Confirmed

Summary

  • They share 19 benchmarks with published results for both. GPT-5 Mini scores higher in 8 categories and Yi-1.5-34B in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where GPT-5 Mini leads 45.6 to 14.8.
  • The biggest single-benchmark swing is MATH Level 5: 97.8% for GPT-5 Mini and 25.5% for Yi-1.5-34B.
  • Yi-1.5-34B has downloadable open weights; the other is API-only.

Side by side

GPT-5 MiniYi-1.5-34B
ProviderOpenAI01.AI
Noometry Index41.830.6
Released2025-08-072024-05-13
WeightsProprietaryOpen
Context window400K—
Max output128K—
Input $ / M tokens$0.25—
Output $ / M tokens$2—
Results tracked6021

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Category by category

Coding GPT-5 Mini leads

GPT-5 Mini: 40.1 (#146), Yi-1.5-34B: 32.4 (#272)

BenchmarkGPT-5 MiniYi-1.5-34B
LMArena Coding14061169
SWE-bench Verified64.7%—
SWE-bench Verified (bash only)59.8%—
SWE-bench Multilingual39.7%—
SciCode39.2%—
WeirdML52.7%—
BigCodeBench Instruct—33.9%
BigCodeBench Complete—43.8%
ALE-Bench799.77—
AlgoTune1.38—

Agentic & Tool Use Not comparable

GPT-5 Mini: 31.1 (#70), Yi-1.5-34B: —

BenchmarkGPT-5 MiniYi-1.5-34B
Terminal-Bench34.8%—
Berkeley Function Calling Leaderboard55.5%—
Vending-Bench 2-31.18—

Reasoning GPT-5 Mini leads

GPT-5 Mini: 23.9 (#168), Yi-1.5-34B: 22.5 (#191)

BenchmarkGPT-5 MiniYi-1.5-34B
LMArena Hard Prompts13801160
ARC-AGI-24.4%—
Kagi LLM Benchmark70.3%—
ARC-AGI-154.3%—
CritPt0%—
Chess Puzzles30%—
EnigmaEval8.2%—
Mystery Game Puzzles10%—
DTBench80.5%—
LMCA34.2%—
Epoch Capabilities Index145.52—
ForecastBench61—

Math GPT-5 Mini leads

GPT-5 Mini: 46.7 (#69), Yi-1.5-34B: 27.5 (#249)

BenchmarkGPT-5 MiniYi-1.5-34B
LMArena Math13781182
MATH Level 597.8%25.5%
FrontierMath (Tiers 1-3)46.7%—
FrontierMath Tier 412.2%—
OTIS Mock AIME 2024-202586.7%—
ProofBench9%—
Omni-MATH72.2%—
FrontierMath (Feb 2025 set)27.2%—
FrontierMath Tier 4 (v1)6.3%—

Knowledge GPT-5 Mini leads

GPT-5 Mini: 45.6 (#86), Yi-1.5-34B: 14.8 (#295)

BenchmarkGPT-5 MiniYi-1.5-34B
GPQA Diamond75%32%
LMArena Expert13791144
Humanity's Last Exam19.4%—
SimpleQA Verified21.6%—
MMLU-Pro83.5%—
Confabulations13.3%—
Vectara Hallucination Rate12.9%—
GPQA (HELM)75.6%—

Multimodal Not comparable

GPT-5 Mini: 35.6 (#85), Yi-1.5-34B: —

BenchmarkGPT-5 MiniYi-1.5-34B
LMArena Vision1202—
VPCT40.2%—

Multilingual GPT-5 Mini leads

GPT-5 Mini: 48.9 (#137), Yi-1.5-34B: 32.3 (#256)

BenchmarkGPT-5 MiniYi-1.5-34B
LMArena Non-English13631121
LMArena Chinese13851213
LMArena French13861156
LMArena German13661111
LMArena Japanese13411021
LMArena Korean13081005
LMArena Russian13621091
LMArena Spanish13551121

Instruction Following GPT-5 Mini leads

GPT-5 Mini: 76.2 (#46), Yi-1.5-34B: 59.2 (#257)

BenchmarkGPT-5 MiniYi-1.5-34B
LMArena Instruction Following13571139
IFEval92.7%—

Long Context GPT-5 Mini leads

GPT-5 Mini: 41.9 (#132), Yi-1.5-34B: 34.6 (#248)

BenchmarkGPT-5 MiniYi-1.5-34B
LMArena Longer Query13551143
Fiction.LiveBench69.4%—

Writing & Preference GPT-5 Mini leads

GPT-5 Mini: 55.2 (#148), Yi-1.5-34B: 37.4 (#257)

BenchmarkGPT-5 MiniYi-1.5-34B
LMArena Text13731173
LMArena Creative Writing13251135
LMArena Multi-Turn13631153
Short-Story Creative Writing83.1%—
EQ-Bench Creative Writing1313—
WildBench85.5%—

Frequently asked questions

Is GPT-5 Mini better than Yi-1.5-34B?

GPT-5 Mini is the stronger model overall, scoring 41.8 to 30.6 on the Noometry Index.

Is GPT-5 Mini or Yi-1.5-34B better for coding?

GPT-5 Mini scores higher on coding benchmarks: 40.1 versus 32.4 in the Noometry coding category.

How many benchmarks do GPT-5 Mini and Yi-1.5-34B share?

19 benchmarks have published results for both models. GPT-5 Mini has 60 scored results on Noometry and Yi-1.5-34B has 21.

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