Model comparison
Gemini 2.5 Flash vs StarCoder 2 15B
Gemini 2.5 Flash has enough public results to be ranked (#162); StarCoder 2 15B does not yet, so treat this comparison as directional.
Last verified . 1 shared benchmarks.
Google
NVIDIASummary
- They share 1 benchmark with published results for both. Gemini 2.5 Flash scores higher in 0 categories and StarCoder 2 15B in 1 category, but none of those gaps is larger than the uncertainty.
- StarCoder 2 15B has downloadable open weights; the other is API-only.
Side by side
| Gemini 2.5 Flash | StarCoder 2 15B | |
|---|---|---|
| Provider | NVIDIA | |
| Noometry Index | 39.0 | 37.5 |
| Released | 2025-04-17 | 2024-02-20 |
| Weights | Proprietary | Open |
| Context window | 1.05M | — |
| Max output | 66K | — |
| Input $ / M tokens | $0.30 | — |
| Output $ / M tokens | $2.50 | — |
| Results tracked | 54 | 7 |
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Category by category
Coding Too close to call
Gemini 2.5 Flash: 35.5 (#210), StarCoder 2 15B: 36.0
| Benchmark | Gemini 2.5 Flash | StarCoder 2 15B |
|---|---|---|
| SWE-bench Verified (bash only) | 28.7% | — |
| Aider Polyglot | 55.1% | — |
| WeirdML | 41.9% | — |
| LMArena Coding | 1424 | — |
| BigCodeBench Complete | — | 38.4% |
| ALE-Bench | 661.88 | — |
| HumanEval+ | — | 37.8% |
Agentic & Tool Use Not comparable
Gemini 2.5 Flash: 30.6 (#67), StarCoder 2 15B: —
| Benchmark | Gemini 2.5 Flash | StarCoder 2 15B |
|---|---|---|
| Terminal-Bench | 17.1% | — |
| Berkeley Function Calling Leaderboard | 56.2% | — |
| TheAgentCompany | 41.1% | — |
| BALROG | 33.5% | — |
| Vending-Bench 2 | 548.84 | — |
Reasoning Not comparable
Gemini 2.5 Flash: 18.2 (#271), StarCoder 2 15B: —
| Benchmark | Gemini 2.5 Flash | StarCoder 2 15B |
|---|---|---|
| Epoch Capabilities Index | 143.04 | 104.61 |
| ARC-AGI-2 | 2.5% | — |
| SimpleBench | 41.2% | — |
| Kagi LLM Benchmark | 56.8% | — |
| ARC-AGI-1 | 33.3% | — |
| CritPt | 1.1% | — |
| EnigmaEval | 2.7% | — |
| LMArena Hard Prompts | 1422 | — |
| DTBench | 76.5% | — |
| LMCA | 27.5% | — |
| ForecastBench | 60.6 | — |
| WinoGrande | — | 64.3% |
Math Not comparable
Gemini 2.5 Flash: 38.1 (#87), StarCoder 2 15B: —
| Benchmark | Gemini 2.5 Flash | StarCoder 2 15B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 73.1% | — |
| Omni-MATH | 38.5% | — |
| LMArena Math | 1415 | — |
| FrontierMath (Feb 2025 set) | 4.8% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
| GSM8K | — | 57.7% |
Knowledge Not comparable
Gemini 2.5 Flash: 36.1 (#162), StarCoder 2 15B: —
| Benchmark | Gemini 2.5 Flash | StarCoder 2 15B |
|---|---|---|
| Humanity's Last Exam | 12.1% | — |
| MMLU-Pro | 63.9% | — |
| Confabulations | 16.8% | — |
| Vectara Hallucination Rate | 7.8% | — |
| GPQA (HELM) | 39% | — |
| LMArena Expert | 1426 | — |
| ARC (AI2) Challenge | — | 47.2% |
| MMLU | — | 64.1% |
Multimodal Not comparable
Gemini 2.5 Flash: 41.2 (#31), StarCoder 2 15B: —
| Benchmark | Gemini 2.5 Flash | StarCoder 2 15B |
|---|---|---|
| LMArena Vision | 1254 | — |
| GeoBench | 76% | — |
| VPCT | 46.2% | — |
| SpatialViz-Bench | 36.9% | — |
Multilingual Not comparable
Gemini 2.5 Flash: 52.5 (#83), StarCoder 2 15B: —
| Benchmark | Gemini 2.5 Flash | StarCoder 2 15B |
|---|---|---|
| LMArena Non-English | 1410 | — |
| LMArena Chinese | 1450 | — |
| LMArena French | 1433 | — |
| LMArena German | 1419 | — |
| LMArena Japanese | 1403 | — |
| LMArena Korean | 1385 | — |
| LMArena Russian | 1415 | — |
| LMArena Spanish | 1421 | — |
Instruction Following Not comparable
Gemini 2.5 Flash: 75.9 (#50), StarCoder 2 15B: —
| Benchmark | Gemini 2.5 Flash | StarCoder 2 15B |
|---|---|---|
| IFEval | 89.8% | — |
| LMArena Instruction Following | 1405 | — |
Long Context Not comparable
Gemini 2.5 Flash: 47.5 (#16), StarCoder 2 15B: —
| Benchmark | Gemini 2.5 Flash | StarCoder 2 15B |
|---|---|---|
| Fiction.LiveBench | 77.8% | — |
| LMArena Longer Query | 1419 | — |
Writing & Preference Not comparable
Gemini 2.5 Flash: 54.0 (#153), StarCoder 2 15B: —
| Benchmark | Gemini 2.5 Flash | StarCoder 2 15B |
|---|---|---|
| LMArena Text | 1417 | — |
| LMArena Creative Writing | 1400 | — |
| Short-Story Creative Writing | 76.5% | — |
| EQ-Bench Creative Writing | 1137 | — |
| WildBench | 81.7% | — |
| LMArena Multi-Turn | 1408 | — |
Frequently asked questions
Is Gemini 2.5 Flash better than StarCoder 2 15B?
Gemini 2.5 Flash has enough public results to be ranked (#162); StarCoder 2 15B does not yet, so treat this comparison as directional.
Is Gemini 2.5 Flash or StarCoder 2 15B better for coding?
They score almost the same on coding (35.5 vs 36.0); test both on your own repository before choosing.
How many benchmarks do Gemini 2.5 Flash and StarCoder 2 15B share?
1 benchmark has published results for both models. Gemini 2.5 Flash has 54 scored results on Noometry and StarCoder 2 15B has 7.