# Step 2 16k Exp 202412 vs Yi-34B

> Step 2 16k Exp 202412 is the stronger model overall, scoring 39.2 to 27.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/step-2-16k-exp-202412-vs-yi-34b
- Last updated: 2026-10-12
- Shared benchmarks: 12

## Summary

- They share 12 benchmarks with published results for both. Step 2 16k Exp 202412 scores higher in 8 categories and Yi-34B in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Step 2 16k Exp 202412 leads 35.2 to 7.5.
- Yi-34B has downloadable open weights; the other is API-only.

## Snapshot

| | Step 2 16k Exp 202412 | Yi-34B |
|---|---|---|
| Provider | StepFun | 01.AI |
| Noometry Index | 39.2 | 27.8 |
| Rank | 171 | 329 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Open |

## Coding

- Step 2 16k Exp 202412: 38.5 (#174)
- Yi-34B: 32.3 (#274)

| Benchmark | Step 2 16k Exp 202412 | Yi-34B |
|---|---|---|
| LMArena Coding | 1316 | 1112 |

## Reasoning

- Step 2 16k Exp 202412: 25.9 (#142)
- Yi-34B: 21.2 (#226)

| Benchmark | Step 2 16k Exp 202412 | Yi-34B |
|---|---|---|
| LMArena Hard Prompts | 1299 | 1104 |
| BIG-Bench Hard | — | 71.7% |
| Epoch Capabilities Index | — | 117.39 |

## Math

- Step 2 16k Exp 202412: 36.3 (#169)
- Yi-34B: 21.6 (#282)

| Benchmark | Step 2 16k Exp 202412 | Yi-34B |
|---|---|---|
| LMArena Math | 1304 | 1114 |
| MATH Level 5 | — | 5.1% |
| GSM8K | — | 76% |

## Knowledge

- Step 2 16k Exp 202412: 35.2 (#187)
- Yi-34B: 7.5 (#309)

| Benchmark | Step 2 16k Exp 202412 | Yi-34B |
|---|---|---|
| LMArena Expert | 1279 | 1061 |
| GPQA Diamond | — | 14.7% |
| MMLU | — | 76.3% |

## Multilingual

- Step 2 16k Exp 202412: 43.7 (#181)
- Yi-34B: 29.7 (#264)

| Benchmark | Step 2 16k Exp 202412 | Yi-34B |
|---|---|---|
| LMArena Non-English | 1290 | 1079 |
| LMArena Chinese | 1331 | 1176 |
| LMArena Russian | 1324 | 1050 |
| LMArena French | — | 1081 |
| LMArena German | — | 1042 |
| LMArena Japanese | — | 993 |
| LMArena Korean | — | 959 |
| LMArena Spanish | — | 1070 |

## Instruction Following

- Step 2 16k Exp 202412: 67.9 (#192)
- Yi-34B: 56.2 (#274)

| Benchmark | Step 2 16k Exp 202412 | Yi-34B |
|---|---|---|
| LMArena Instruction Following | 1287 | 1091 |

## Long Context

- Step 2 16k Exp 202412: 39.7 (#170)
- Yi-34B: 33.2 (#264)

| Benchmark | Step 2 16k Exp 202412 | Yi-34B |
|---|---|---|
| LMArena Longer Query | 1307 | 1094 |

## Writing & Preference

- Step 2 16k Exp 202412: 52.3 (#173)
- Yi-34B: 34.1 (#273)

| Benchmark | Step 2 16k Exp 202412 | Yi-34B |
|---|---|---|
| LMArena Text | 1321 | 1129 |
| LMArena Creative Writing | 1328 | 1108 |
| LMArena Multi-Turn | 1292 | 1113 |

## FAQ

### Is Step 2 16k Exp 202412 better than Yi-34B?

Step 2 16k Exp 202412 is the stronger model overall, scoring 39.2 to 27.8 on the Noometry Index.

### Is Step 2 16k Exp 202412 or Yi-34B better for coding?

Step 2 16k Exp 202412 scores higher on coding benchmarks: 38.5 versus 32.3 in the Noometry coding category.

### How many benchmarks do Step 2 16k Exp 202412 and Yi-34B share?

12 benchmarks have published results for both models. Step 2 16k Exp 202412 has 12 scored results on Noometry and Yi-34B has 23.