Noometry

Model comparison

GPT-5 Nano vs Yi-34B

GPT-5 Nano is the stronger model overall, scoring 33.4 to 27.4 on the Noometry Index.

Last verified . 18 shared benchmarks.

GPT-5 Nano OpenAI

33.4

Rank #234 Confirmed

Yi-34B 01.AI

27.4

Rank #325 Confirmed

Summary

  • They share 18 benchmarks with published results for both. GPT-5 Nano scores higher in 6 categories and Yi-34B in 2 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where GPT-5 Nano leads 35.8 to 7.5.
  • The biggest single-benchmark swing is MATH Level 5: 95.2% for GPT-5 Nano and 5.1% for Yi-34B.
  • Yi-34B has downloadable open weights; the other is API-only.

Side by side

GPT-5 NanoYi-34B
ProviderOpenAI01.AI
Noometry Index33.427.4
Released2025-08-072023-11-02
WeightsProprietaryOpen
Context window400K—
Max output128K—
Input $ / M tokens$0.05—
Output $ / M tokens$0.40—
Results tracked4823

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Category by category

Coding GPT-5 Nano leads

GPT-5 Nano: 33.3 (#248), Yi-34B: 31.8 (#269)

BenchmarkGPT-5 NanoYi-34B
LMArena Coding13511112
SWE-bench Verified (bash only)34.8%—
WeirdML38.1%—
ALE-Bench718.67—

Agentic & Tool Use Not comparable

GPT-5 Nano: 25.6 (#99), Yi-34B: —

BenchmarkGPT-5 NanoYi-34B
Terminal-Bench21.8%—
Berkeley Function Calling Leaderboard51.5%—

Reasoning Yi-34B leads

GPT-5 Nano: 16.4 (#291), Yi-34B: 20.3 (#222)

BenchmarkGPT-5 NanoYi-34B
LMArena Hard Prompts13291104
Epoch Capabilities Index139.39117.28
ARC-AGI-22.6%—
Kagi LLM Benchmark62.2%—
ARC-AGI-120.7%—
Chess Puzzles27%—
Mystery Game Puzzles9%—
DTBench62.7%—
LMCA7.9%—
BIG-Bench Hard—71.7%
ForecastBench59.1—

Math GPT-5 Nano leads

GPT-5 Nano: 29.1 (#221), Yi-34B: 19.8 (#277)

BenchmarkGPT-5 NanoYi-34B
LMArena Math13181114
MATH Level 595.2%5.1%
FrontierMath (Tiers 1-3)20%—
FrontierMath Tier 42.4%—
OTIS Mock AIME 2024-202581.1%—
ProofBench12%—
Omni-MATH54.6%—
FrontierMath (Feb 2025 set)8.3%—
FrontierMath Tier 4 (v1)2.1%—
GSM8K—76%

Knowledge GPT-5 Nano leads

GPT-5 Nano: 35.8 (#166), Yi-34B: 7.5 (#304)

BenchmarkGPT-5 NanoYi-34B
GPQA Diamond69.4%14.7%
LMArena Expert13211061
SimpleQA Verified11.7%—
MMLU-Pro77.8%—
Vectara Hallucination Rate10.5%—
GPQA (HELM)67.9%—
MMLU—76.3%

Multimodal Not comparable

GPT-5 Nano: 30.7 (#102), Yi-34B: —

BenchmarkGPT-5 NanoYi-34B
LMArena Vision1159—
VPCT37.2%—

Multilingual GPT-5 Nano leads

GPT-5 Nano: 45.5 (#167), Yi-34B: 29.9 (#259)

BenchmarkGPT-5 NanoYi-34B
LMArena Non-English13131079
LMArena Chinese13551175
LMArena German13291042
LMArena Korean1269959
LMArena Russian12961050
LMArena Spanish13601070
LMArena French—1080
LMArena Japanese—993

Instruction Following GPT-5 Nano leads

GPT-5 Nano: 75.2 (#72), Yi-34B: 56.4 (#269)

BenchmarkGPT-5 NanoYi-34B
LMArena Instruction Following13061091
IFEval93.2%—

Long Context Yi-34B leads

GPT-5 Nano: 31.3 (#275), Yi-34B: 33.2 (#259)

BenchmarkGPT-5 NanoYi-34B
LMArena Longer Query13131094
Fiction.LiveBench44.4%—

Writing & Preference GPT-5 Nano leads

GPT-5 Nano: 39.4 (#244), Yi-34B: 34.3 (#268)

BenchmarkGPT-5 NanoYi-34B
LMArena Text13201129
LMArena Creative Writing12501108
LMArena Multi-Turn13111113
EQ-Bench Creative Writing705—
WildBench80.6%—

Frequently asked questions

Is GPT-5 Nano better than Yi-34B?

GPT-5 Nano is the stronger model overall, scoring 33.4 to 27.4 on the Noometry Index.

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

GPT-5 Nano scores higher on coding benchmarks: 33.3 versus 31.8 in the Noometry coding category.

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

18 benchmarks have published results for both models. GPT-5 Nano has 48 scored results on Noometry and Yi-34B has 23.

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