# StarCoder 2 15B vs Step 1o Turbo 202506

> Step 1o Turbo 202506 has enough public results to be ranked (#160); StarCoder 2 15B does not yet, so treat this comparison as directional.

- Canonical page: https://noometry.com/compare/starcoder-2-15b-vs-step-1o-turbo-202506
- Last updated: 2026-10-12
- Shared benchmarks: 0

## Summary

- StarCoder 2 15B has downloadable open weights; the other is API-only.

## Snapshot

| | StarCoder 2 15B | Step 1o Turbo 202506 |
|---|---|---|
| Provider | NVIDIA | StepFun |
| Noometry Index | 38.1 | 39.7 |
| Rank | — | 160 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Open | Proprietary |

## Coding

- StarCoder 2 15B: 36.6
- Step 1o Turbo 202506: 39.2 (#160)

| Benchmark | StarCoder 2 15B | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Coding | — | 1339 |
| BigCodeBench Complete | 38.4% | — |
| HumanEval+ | 37.8% | — |

## Reasoning

- StarCoder 2 15B: —
- Step 1o Turbo 202506: 26.8 (#129)

| Benchmark | StarCoder 2 15B | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Hard Prompts | — | 1335 |
| Epoch Capabilities Index | 105 | — |
| WinoGrande | 64.3% | — |

## Math

- StarCoder 2 15B: —
- Step 1o Turbo 202506: 36.6 (#164)

| Benchmark | StarCoder 2 15B | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Math | — | 1318 |
| GSM8K | 57.7% | — |

## Knowledge

- StarCoder 2 15B: —
- Step 1o Turbo 202506: 36.1 (#176)

| Benchmark | StarCoder 2 15B | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Expert | — | 1308 |
| ARC (AI2) Challenge | 47.2% | — |
| MMLU | 64.1% | — |

## Multimodal

- StarCoder 2 15B: —
- Step 1o Turbo 202506: 36.1 (#80)

| Benchmark | StarCoder 2 15B | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Vision | — | 1186 |

## Multilingual

- StarCoder 2 15B: —
- Step 1o Turbo 202506: 45.3 (#173)

| Benchmark | StarCoder 2 15B | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Non-English | — | 1313 |
| LMArena Chinese | — | 1380 |
| LMArena German | — | 1314 |
| LMArena Russian | — | 1327 |

## Instruction Following

- StarCoder 2 15B: —
- Step 1o Turbo 202506: 69.2 (#176)

| Benchmark | StarCoder 2 15B | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Instruction Following | — | 1310 |

## Long Context

- StarCoder 2 15B: —
- Step 1o Turbo 202506: 41.0 (#146)

| Benchmark | StarCoder 2 15B | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Longer Query | — | 1348 |

## Writing & Preference

- StarCoder 2 15B: —
- Step 1o Turbo 202506: 53.1 (#160)

| Benchmark | StarCoder 2 15B | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Text | — | 1336 |
| LMArena Creative Writing | — | 1307 |
| LMArena Multi-Turn | — | 1340 |

## FAQ

### Is StarCoder 2 15B better than Step 1o Turbo 202506?

Step 1o Turbo 202506 has enough public results to be ranked (#160); StarCoder 2 15B does not yet, so treat this comparison as directional.

### Is StarCoder 2 15B or Step 1o Turbo 202506 better for coding?

Step 1o Turbo 202506 scores higher on coding benchmarks: 39.2 versus 36.6 in the Noometry coding category.

### How many benchmarks do StarCoder 2 15B and Step 1o Turbo 202506 share?

0 benchmarks have published results for both models. StarCoder 2 15B has 7 scored results on Noometry and Step 1o Turbo 202506 has 14.