Model comparison
Claude Sonnet 5.5 vs StarCoder 2 15B
Claude Sonnet 5.5 has enough public results to be ranked (#10); StarCoder 2 15B does not yet, so treat this comparison as directional.
Last verified . 0 shared benchmarks.
NVIDIASummary
- The widest gap is in coding, where Claude Sonnet 5.5 leads 65.5 to 36.0.
- StarCoder 2 15B has downloadable open weights; the other is API-only.
Side by side
| Claude Sonnet 5.5 | StarCoder 2 15B | |
|---|---|---|
| Provider | Anthropic | NVIDIA |
| Noometry Index | 60.5 | 37.5 |
| Released | 2026-09-28 | 2024-02-20 |
| Weights | Proprietary | Open |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $2 | — |
| Output $ / M tokens | $10 | — |
| Results tracked | 16 | 7 |
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Category by category
Coding Claude Sonnet 5.5 leads
Claude Sonnet 5.5: 65.5 (#6), StarCoder 2 15B: 36.0
| Benchmark | Claude Sonnet 5.5 | StarCoder 2 15B |
|---|---|---|
| FrontierCode | 52.1% | — |
| CursorBench | 55.5% | — |
| LMArena WebDev | 1699 | — |
| FrontierSWE | 61.9% | — |
| SciCode | 61% | — |
| BigCodeBench Complete | — | 38.4% |
| ALE-Bench | 1,819 | — |
| HumanEval+ | — | 37.8% |
Agentic & Tool Use Not comparable
Claude Sonnet 5.5: 44.9 (#14), StarCoder 2 15B: —
| Benchmark | Claude Sonnet 5.5 | StarCoder 2 15B |
|---|---|---|
| APEX-Agents | 75.5% | — |
Reasoning Not comparable
Claude Sonnet 5.5: 52.4 (#29), StarCoder 2 15B: —
| Benchmark | Claude Sonnet 5.5 | StarCoder 2 15B |
|---|---|---|
| CritPt | 31.4% | — |
| Mystery Game Puzzles | 65% | — |
| Epoch Capabilities Index | — | 104.61 |
| WinoGrande | — | 64.3% |
Math Not comparable
Claude Sonnet 5.5: 88.7 (#4), StarCoder 2 15B: —
| Benchmark | Claude Sonnet 5.5 | StarCoder 2 15B |
|---|---|---|
| FrontierMath (Tiers 1-3) | 88.8% | — |
| FrontierMath Tier 4 | 80.5% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| ProofBench | 100% | — |
| GSM8K | — | 57.7% |
Knowledge Not comparable
Claude Sonnet 5.5: 66.0 (#11), StarCoder 2 15B: —
| Benchmark | Claude Sonnet 5.5 | StarCoder 2 15B |
|---|---|---|
| GPQA Diamond | 95.6% | — |
| SimpleQA Verified | 46.5% | — |
| ARC (AI2) Challenge | — | 47.2% |
| MMLU | — | 64.1% |
Multimodal Not comparable
Claude Sonnet 5.5: 53.2 (#5), StarCoder 2 15B: —
| Benchmark | Claude Sonnet 5.5 | StarCoder 2 15B |
|---|---|---|
| Furniture Assembly | 75% | — |
Frequently asked questions
Is Claude Sonnet 5.5 better than StarCoder 2 15B?
Claude Sonnet 5.5 has enough public results to be ranked (#10); StarCoder 2 15B does not yet, so treat this comparison as directional.
Is Claude Sonnet 5.5 or StarCoder 2 15B better for coding?
Claude Sonnet 5.5 scores higher on coding benchmarks: 65.5 versus 36.0 in the Noometry coding category.
How many benchmarks do Claude Sonnet 5.5 and StarCoder 2 15B share?
0 benchmarks have published results for both models. Claude Sonnet 5.5 has 16 scored results on Noometry and StarCoder 2 15B has 7.