What are Yi-1.5-34B's benchmark scores?

As of 25 Oct 2026, Yi-1.5-34B scores 39.2 ±2.9 on the BenchLeader Index, strongest in maths (37) and weakest in reasoning (29). That rests on 6 independent benchmark results, and every score on this page links to its publisher.

How does Yi-1.5-34B rank?

Yi-1.5-34B is #694 of 785 ranked configurations on 25 Oct 2026. 222 other configurations score within its margin, so the exact position matters less than the band. The leader is Claude Opus 5.5 (max effort) at 72.6.

When was Yi-1.5-34B released?

01.AI released Yi-1.5-34B on 13 May 2024.

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Yi-1.5-34B

Yi-1.5-34B is a 01.AI proprietary model, released 13 May 2024. Its best configuration ranks #694 of 785 on the BenchLeader Index at 39.2 ±2.9, in the lower half. The ± is the point: 222 other configurations score within that range, so they and this one cannot be told apart on quality alone — price and speed are what separate them. It scores highest in maths (37) and lowest in reasoning (29). Last measured 22 Oct 2026.

Blended price: –
Output speed: –
First answer: –
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Full answer: –
Cost per run: –
Released: 13 May 2024

How it scores by categoryDashed line = average model (50). One step of 15 = one standard deviation.

Overall index39
Reasoning29
Coding35
Maths37
Human preference35

Versions

01.AI has shipped 2 models under this name. Each is ranked on its own results; a newer version often has fewer results so far, which holds its index nearer the average until more arrive.

Model	Released	Index	Rank
Yi-1.5-34Bthis page	13 May 2024	39.2	#694
Yi-34B	2 Nov 2023	35.0	#767

How its index has moved

8 Sept 2026 to 19 Oct 2026

The index is recomputed from scratch every day, so a line moves when a new benchmark result lands, when a publisher revises a score, or when the models it is normalised against change. Early movement usually means the score is still settling.

Benchmark results

See all LLM benchmarks. One column per reasoning effort. Rank is among every configuration of every model on that benchmark. Hover a score for the run it came from.

Reasoning

Benchmark	not stated	Source	Trend
GPQA Diamond	32.0%#267	Epoch AI Benchmarking Hub
Arena Hard Prompts	1226#305	Arena (LMArena)

Coding

Benchmark	not stated	Source	Trend
Arena Coding	1248#309	Arena (LMArena)

Maths

Benchmark	not stated	Source	Trend
MATH Level 5	25.5%#71	Epoch AI Benchmarking Hub
Arena Maths	1212#287	Arena (LMArena)

Instruction following

Benchmark	not stated	Source	Trend
Arena Instruction Followingnot in index	1188#308	Arena (LMArena)

Human preference

Benchmark	not stated	Source
Arena Text	1213#305	Arena (LMArena)
Arena Creative Writingnot in index	1159#311	Arena (LMArena)
Arena Multi-turnnot in index	1190#303	Arena (LMArena)
Arena Longer Queriesnot in index	1205#307	Arena (LMArena)

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Questions people ask

What are Yi-1.5-34B's benchmark scores?: As of 25 Oct 2026, Yi-1.5-34B scores 39.2 ±2.9 on the BenchLeader Index, strongest in maths (37) and weakest in reasoning (29). That rests on 6 independent benchmark results, and every score on this page links to its publisher.
How does Yi-1.5-34B rank?: Yi-1.5-34B is #694 of 785 ranked configurations on 25 Oct 2026. 222 other configurations score within its margin, so the exact position matters less than the band. The leader is Claude Opus 5.5 (max effort) at 72.6.
When was Yi-1.5-34B released?: 01.AI released Yi-1.5-34B on 13 May 2024.

Data as of 25 Oct 2026. Compare with another model.

Cite as: BenchLeader, “Yi-1.5-34B: benchmarks, pricing, speed and rank”, data as of 25 Oct 2026, https://www.benchleader.com/models/yi-1-5-34b.