Model comparison
GPT-6 Astra vs StarCoder 2 15B
GPT-6 Astra has enough public results to be ranked (#1); 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. GPT-6 Astra scores higher in 1 category and StarCoder 2 15B in 0 categories; one gap is clear of the uncertainty.
- The widest gap is in coding, where GPT-6 Astra leads 73.7 to 36.6.
- StarCoder 2 15B has downloadable open weights; the other is API-only.
Side by side
| GPT-6 Astra | StarCoder 2 15B | |
|---|---|---|
| Provider | OpenAI | NVIDIA |
| Noometry Index | 70.8 | 38.1 |
| Released | 2026-09-03 | 2024-02-20 |
| Weights | Proprietary | Open |
| Context window | 1.05M | — |
| Max output | 128K | — |
| Input $ / M tokens | $10 | — |
| Output $ / M tokens | $50 | — |
| Results tracked | 56 | 7 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding GPT-6 Astra leads
GPT-6 Astra: 73.7 (#2), StarCoder 2 15B: 36.6
| Benchmark | GPT-6 Astra | StarCoder 2 15B |
|---|---|---|
| DeepSWE | 74.1% | — |
| FrontierCode | 53.3% | — |
| LMArena WebDev | 1786 | — |
| FrontierSWE | 65.5% | — |
| SciCode | 56.5% | — |
| GSO | 79.4% | — |
| WeirdML | 93.6% | — |
| LMArena Coding | 1487 | — |
| MirrorCode | 46.7% | — |
| BigCodeBench Complete | — | 38.4% |
| ALE-Bench | 2,951 | — |
| HumanEval+ | — | 37.8% |
Agentic & Tool Use Not comparable
GPT-6 Astra: 52.9 (#3), StarCoder 2 15B: —
| Benchmark | GPT-6 Astra | StarCoder 2 15B |
|---|---|---|
| APEX-Agents | 64.7% | — |
| Remote Labor Index | 20.8% | — |
| BALROG | 68.3% | — |
| GDP.pdf | 34.2% | — |
| Vending-Bench 2 | 15,515 | — |
Reasoning Not comparable
GPT-6 Astra: 85.1 (#1), StarCoder 2 15B: —
| Benchmark | GPT-6 Astra | StarCoder 2 15B |
|---|---|---|
| Epoch Capabilities Index | 166.45 | 105 |
| ARC-AGI-2 | 95% | — |
| NYT Connections (extended) | 98.1% | — |
| ARC-AGI-1 | 98.5% | — |
| CritPt | 31.7% | — |
| Chess Puzzles | 72% | — |
| EBR-Bench | 76.2% | — |
| LMArena Hard Prompts | 1462 | — |
| Mystery Game Puzzles | 84% | — |
| DTBench | 97.3% | — |
| LMCA | 64.4% | — |
| Bench to the Future 3 | 0.14 | — |
| WinoGrande | — | 64.3% |
Math Not comparable
GPT-6 Astra: 93.5 (#2), StarCoder 2 15B: —
| Benchmark | GPT-6 Astra | StarCoder 2 15B |
|---|---|---|
| FrontierMath (Tiers 1-3) | 93.7% | — |
| FrontierMath Tier 4 | 97.6% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| ProofBench | 99% | — |
| LMArena Math | 1465 | — |
| FrontierMath Erdős | 2.9% | — |
| GSM8K | — | 57.7% |
Knowledge Not comparable
GPT-6 Astra: 75.3 (#1), StarCoder 2 15B: —
| Benchmark | GPT-6 Astra | StarCoder 2 15B |
|---|---|---|
| GPQA Diamond | 95.8% | — |
| Humanity's Last Exam | 54.8% | — |
| SimpleQA Verified | 75.6% | — |
| Vectara Hallucination Rate | 8.7% | — |
| LMArena Expert | 1483 | — |
| ARC (AI2) Challenge | — | 47.2% |
| MMLU | — | 64.1% |
Multimodal Not comparable
GPT-6 Astra: 55.0 (#3), StarCoder 2 15B: —
| Benchmark | GPT-6 Astra | StarCoder 2 15B |
|---|---|---|
| LMArena Vision | 1281 | — |
| Blueprint-Bench 2 | 49.7% | — |
| Furniture Assembly | 80% | — |
| LMArena Document | 1468 | — |
Multilingual Not comparable
GPT-6 Astra: 53.7 (#61), StarCoder 2 15B: —
| Benchmark | GPT-6 Astra | StarCoder 2 15B |
|---|---|---|
| LMArena Non-English | 1430 | — |
| LMArena Chinese | 1484 | — |
| LMArena French | 1456 | — |
| LMArena German | 1440 | — |
| LMArena Japanese | 1379 | — |
| LMArena Korean | 1426 | — |
| LMArena Russian | 1436 | — |
| LMArena Spanish | 1407 | — |
Instruction Following Not comparable
GPT-6 Astra: 76.3 (#44), StarCoder 2 15B: —
| Benchmark | GPT-6 Astra | StarCoder 2 15B |
|---|---|---|
| LMArena Instruction Following | 1450 | — |
Long Context Not comparable
GPT-6 Astra: 44.5 (#62), StarCoder 2 15B: —
| Benchmark | GPT-6 Astra | StarCoder 2 15B |
|---|---|---|
| LMArena Longer Query | 1456 | — |
Writing & Preference Not comparable
GPT-6 Astra: 75.3 (#7), StarCoder 2 15B: —
| Benchmark | GPT-6 Astra | StarCoder 2 15B |
|---|---|---|
| LMArena Text | 1441 | — |
| LMArena Creative Writing | 1418 | — |
| EQ-Bench Creative Writing | 2173 | — |
| LMArena Multi-Turn | 1448 | — |
Frequently asked questions
Is GPT-6 Astra better than StarCoder 2 15B?
GPT-6 Astra has enough public results to be ranked (#1); StarCoder 2 15B does not yet, so treat this comparison as directional.
Is GPT-6 Astra or StarCoder 2 15B better for coding?
GPT-6 Astra scores higher on coding benchmarks: 73.7 versus 36.6 in the Noometry coding category.
How many benchmarks do GPT-6 Astra and StarCoder 2 15B share?
1 benchmark has published results for both models. GPT-6 Astra has 56 scored results on Noometry and StarCoder 2 15B has 7.