Model comparison
Gemini 2.5 Flash vs Step 2 16k Exp 202412
Gemini 2.5 Flash and Step 2 16k Exp 202412 score almost the same on the Noometry Index (39.3 vs 39.2), so choose on price, context window or the category you care about most.
Last verified . 12 shared benchmarks.
Google
StepFunSummary
- They share 12 benchmarks with published results for both. Gemini 2.5 Flash scores higher in 6 categories and Step 2 16k Exp 202412 in 2 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in multilingual, where Gemini 2.5 Flash leads 52.3 to 43.7.
Side by side
| Gemini 2.5 Flash | Step 2 16k Exp 202412 | |
|---|---|---|
| Provider | StepFun | |
| Noometry Index | 39.3 | 39.2 |
| Released | 2025-04-17 | — |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | — |
| Max output | 66K | — |
| Input $ / M tokens | $0.30 | — |
| Output $ / M tokens | $2.50 | — |
| Results tracked | 54 | 12 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Step 2 16k Exp 202412 leads
Gemini 2.5 Flash: 35.8 (#220), Step 2 16k Exp 202412: 38.5 (#174)
| Benchmark | Gemini 2.5 Flash | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Coding | 1424 | 1316 |
| SWE-bench Verified (bash only) | 28.7% | — |
| Aider Polyglot | 55.1% | — |
| WeirdML | 41.9% | — |
| ALE-Bench | 661.88 | — |
Agentic & Tool Use Not comparable
Gemini 2.5 Flash: 30.8 (#74), Step 2 16k Exp 202412: —
| Benchmark | Gemini 2.5 Flash | Step 2 16k Exp 202412 |
|---|---|---|
| Terminal-Bench | 17.1% | — |
| Berkeley Function Calling Leaderboard | 56.2% | — |
| TheAgentCompany | 41.1% | — |
| BALROG | 33.5% | — |
| Vending-Bench 2 | 548.84 | — |
Reasoning Step 2 16k Exp 202412 leads
Gemini 2.5 Flash: 18.1 (#286), Step 2 16k Exp 202412: 25.9 (#142)
| Benchmark | Gemini 2.5 Flash | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Hard Prompts | 1422 | 1299 |
| ARC-AGI-2 | 2.5% | — |
| SimpleBench | 41.2% | — |
| Kagi LLM Benchmark | 56.8% | — |
| ARC-AGI-1 | 33.3% | — |
| CritPt | 1.1% | — |
| EnigmaEval | 2.7% | — |
| DTBench | 76.5% | — |
| LMCA | 27.5% | — |
| Epoch Capabilities Index | 143.03 | — |
| ForecastBench | 60.6 | — |
Math Gemini 2.5 Flash leads
Gemini 2.5 Flash: 39.9 (#98), Step 2 16k Exp 202412: 36.3 (#169)
| Benchmark | Gemini 2.5 Flash | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Math | 1415 | 1304 |
| OTIS Mock AIME 2024-2025 | 73.1% | — |
| Omni-MATH | 38.5% | — |
| FrontierMath (Feb 2025 set) | 4.8% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Gemini 2.5 Flash leads
Gemini 2.5 Flash: 36.4 (#168), Step 2 16k Exp 202412: 35.2 (#187)
| Benchmark | Gemini 2.5 Flash | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Expert | 1426 | 1279 |
| Humanity's Last Exam | 12.1% | — |
| MMLU-Pro | 63.9% | — |
| Confabulations | 16.8% | — |
| Vectara Hallucination Rate | 7.8% | — |
| GPQA (HELM) | 39% | — |
Multimodal Not comparable
Gemini 2.5 Flash: 41.8 (#32), Step 2 16k Exp 202412: —
| Benchmark | Gemini 2.5 Flash | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Vision | 1253 | — |
| GeoBench | 76% | — |
| VPCT | 46.2% | — |
| SpatialViz-Bench | 36.9% | — |
Multilingual Gemini 2.5 Flash leads
Gemini 2.5 Flash: 52.3 (#88), Step 2 16k Exp 202412: 43.7 (#181)
| Benchmark | Gemini 2.5 Flash | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Non-English | 1409 | 1290 |
| LMArena Chinese | 1450 | 1331 |
| LMArena Russian | 1415 | 1324 |
| LMArena French | 1433 | — |
| LMArena German | 1418 | — |
| LMArena Japanese | 1405 | — |
| LMArena Korean | 1385 | — |
| LMArena Spanish | 1421 | — |
Instruction Following Gemini 2.5 Flash leads
Gemini 2.5 Flash: 75.7 (#54), Step 2 16k Exp 202412: 67.9 (#192)
| Benchmark | Gemini 2.5 Flash | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Instruction Following | 1405 | 1287 |
| IFEval | 89.8% | — |
Long Context Gemini 2.5 Flash leads
Gemini 2.5 Flash: 47.5 (#17), Step 2 16k Exp 202412: 39.7 (#170)
| Benchmark | Gemini 2.5 Flash | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Longer Query | 1419 | 1307 |
| Fiction.LiveBench | 77.8% | — |
Writing & Preference Gemini 2.5 Flash leads
Gemini 2.5 Flash: 53.8 (#157), Step 2 16k Exp 202412: 52.3 (#173)
| Benchmark | Gemini 2.5 Flash | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Text | 1417 | 1321 |
| LMArena Creative Writing | 1400 | 1328 |
| LMArena Multi-Turn | 1408 | 1292 |
| Short-Story Creative Writing | 76.5% | — |
| EQ-Bench Creative Writing | 1137 | — |
| WildBench | 81.7% | — |
Frequently asked questions
Is Gemini 2.5 Flash better than Step 2 16k Exp 202412?
Gemini 2.5 Flash and Step 2 16k Exp 202412 score almost the same on the Noometry Index (39.3 vs 39.2), so choose on price, context window or the category you care about most.
Is Gemini 2.5 Flash or Step 2 16k Exp 202412 better for coding?
Step 2 16k Exp 202412 scores higher on coding benchmarks: 38.5 versus 35.8 in the Noometry coding category.
How many benchmarks do Gemini 2.5 Flash and Step 2 16k Exp 202412 share?
12 benchmarks have published results for both models. Gemini 2.5 Flash has 54 scored results on Noometry and Step 2 16k Exp 202412 has 12.