Model comparison
GPT-5.5 Pro vs StarCoder 2 15B
GPT-5.5 Pro has enough public results to be ranked (#8); StarCoder 2 15B does not yet, so treat this comparison as directional.
Last verified . 1 shared benchmarks.
NVIDIASummary
- They share 1 benchmark with published results for both.
- StarCoder 2 15B has downloadable open weights; the other is API-only.
Side by side
| GPT-5.5 Pro | StarCoder 2 15B | |
|---|---|---|
| Provider | OpenAI | NVIDIA |
| Noometry Index | 64.3 | 38.1 |
| Released | 2026-04-23 | 2024-02-20 |
| Weights | Proprietary | Open |
| Context window | 1.05M | — |
| Max output | 128K | — |
| Input $ / M tokens | $30 | — |
| Output $ / M tokens | $180 | — |
| Results tracked | 14 | 7 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Not comparable
GPT-5.5 Pro: —, StarCoder 2 15B: 36.6
| Benchmark | GPT-5.5 Pro | StarCoder 2 15B |
|---|---|---|
| BigCodeBench Complete | — | 38.4% |
| HumanEval+ | — | 37.8% |
Reasoning Not comparable
GPT-5.5 Pro: 73.3 (#10), StarCoder 2 15B: —
| Benchmark | GPT-5.5 Pro | StarCoder 2 15B |
|---|---|---|
| Epoch Capabilities Index | 162.07 | 105 |
| ARC-AGI-2 | 84.6% | — |
| SimpleBench | 76.9% | — |
| ARC-AGI-1 | 96.5% | — |
| CritPt | 30.6% | — |
| Chess Puzzles | 64% | — |
| DTBench | 96% | — |
| LMCA | 53.9% | — |
| WinoGrande | — | 64.3% |
Math Not comparable
GPT-5.5 Pro: 84.0 (#10), StarCoder 2 15B: —
| Benchmark | GPT-5.5 Pro | StarCoder 2 15B |
|---|---|---|
| FrontierMath (Tiers 1-3) | 87.7% | — |
| FrontierMath Tier 4 | 78% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| FrontierMath (Feb 2025 set) | 52.4% | — |
| FrontierMath Tier 4 (v1) | 39.6% | — |
| GSM8K | — | 57.7% |
Knowledge Not comparable
GPT-5.5 Pro: 64.1 (#19), StarCoder 2 15B: —
| Benchmark | GPT-5.5 Pro | StarCoder 2 15B |
|---|---|---|
| GPQA Diamond | 93.9% | — |
| ARC (AI2) Challenge | — | 47.2% |
| MMLU | — | 64.1% |
Frequently asked questions
Is GPT-5.5 Pro better than StarCoder 2 15B?
GPT-5.5 Pro has enough public results to be ranked (#8); StarCoder 2 15B does not yet, so treat this comparison as directional.
How many benchmarks do GPT-5.5 Pro and StarCoder 2 15B share?
1 benchmark has published results for both models. GPT-5.5 Pro has 14 scored results on Noometry and StarCoder 2 15B has 7.