# Mercury 2.5 vs StarCoder 2 15B

> Mercury 2.5 has enough public results to be ranked (#242); StarCoder 2 15B does not yet, so treat this comparison as directional.

- Canonical page: https://noometry.com/compare/mercury-2-5-vs-starcoder-2-15b
- Last updated: 2026-10-11
- Shared benchmarks: 0

## Summary

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

## Snapshot

| | Mercury 2.5 | StarCoder 2 15B |
|---|---|---|
| Provider | Inception | NVIDIA |
| Noometry Index | 33.5 | 38.1 |
| Rank | 242 | — |
| Context | 260K | — |
| Input $/M | $0.04 | — |
| Output $/M | $0.15 | — |
| Weights | Proprietary | Open |

## Coding

- Mercury 2.5: 39.5 (#156)
- StarCoder 2 15B: 36.6

| Benchmark | Mercury 2.5 | StarCoder 2 15B |
|---|---|---|
| SciCode | 38.5% | — |
| BigCodeBench Complete | — | 38.4% |
| ALE-Bench | 301.65 | — |
| HumanEval+ | — | 37.8% |

## Reasoning

- Mercury 2.5: 22.4 (#193)
- StarCoder 2 15B: —

| Benchmark | Mercury 2.5 | StarCoder 2 15B |
|---|---|---|
| CritPt | 0% | — |
| Epoch Capabilities Index | — | 105 |
| WinoGrande | — | 64.3% |

## Math

- Mercury 2.5: 23.3 (#272)
- StarCoder 2 15B: —

| Benchmark | Mercury 2.5 | StarCoder 2 15B |
|---|---|---|
| ProofBench | 3% | — |
| GSM8K | — | 57.7% |

## Knowledge

- Mercury 2.5: —
- StarCoder 2 15B: —

| Benchmark | Mercury 2.5 | StarCoder 2 15B |
|---|---|---|
| ARC (AI2) Challenge | — | 47.2% |
| MMLU | — | 64.1% |

## FAQ

### Is Mercury 2.5 better than StarCoder 2 15B?

Mercury 2.5 has enough public results to be ranked (#242); StarCoder 2 15B does not yet, so treat this comparison as directional.

### Is Mercury 2.5 or StarCoder 2 15B better for coding?

Mercury 2.5 scores higher on coding benchmarks: 39.5 versus 36.6 in the Noometry coding category.

### How many benchmarks do Mercury 2.5 and StarCoder 2 15B share?

0 benchmarks have published results for both models. Mercury 2.5 has 4 scored results on Noometry and StarCoder 2 15B has 7.