Model comparison
Gemini 3.8 Flash vs Step 1o Turbo 202506
Gemini 3.8 Flash is the stronger model overall, scoring 61.8 to 39.7 on the Noometry Index.
Last verified . 14 shared benchmarks.
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StepFunSummary
- They share 14 benchmarks with published results for both. Gemini 3.8 Flash scores higher in 9 categories and Step 1o Turbo 202506 in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3.8 Flash leads 76.9 to 26.8.
Side by side
| Gemini 3.8 Flash | Step 1o Turbo 202506 | |
|---|---|---|
| Provider | StepFun | |
| Noometry Index | 61.8 | 39.7 |
| Released | 2026-09-02 | — |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | — |
| Max output | 66K | — |
| Input $ / M tokens | $0.75 | — |
| Output $ / M tokens | $3.75 | — |
| Results tracked | 50 | 14 |
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Category by category
Coding Gemini 3.8 Flash leads
Gemini 3.8 Flash: 59.2 (#15), Step 1o Turbo 202506: 39.2 (#160)
| Benchmark | Gemini 3.8 Flash | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Coding | 1510 | 1339 |
| DeepSWE | 73.8% | — |
| FrontierCode | 41.2% | — |
| CursorBench | 39.6% | — |
| LMArena WebDev | 1584 | — |
| FrontierSWE | 19.6% | — |
| SciCode | 56.6% | — |
| WeirdML | 84.8% | — |
| ALE-Bench | 1,270 | — |
Agentic & Tool Use Not comparable
Gemini 3.8 Flash: 41.8 (#21), Step 1o Turbo 202506: —
| Benchmark | Gemini 3.8 Flash | Step 1o Turbo 202506 |
|---|---|---|
| APEX-Agents | 64.3% | — |
| Remote Labor Index | 5.8% | — |
| GDP.pdf | 23.4% | — |
| Vending-Bench 2 | 5,094 | — |
Reasoning Gemini 3.8 Flash leads
Gemini 3.8 Flash: 76.9 (#5), Step 1o Turbo 202506: 26.8 (#129)
| Benchmark | Gemini 3.8 Flash | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Hard Prompts | 1508 | 1335 |
| ARC-AGI-2 | 89.2% | — |
| NYT Connections (extended) | 97.4% | — |
| ARC-AGI-1 | 98.5% | — |
| CritPt | 18.3% | — |
| Chess Puzzles | 61% | — |
| Mystery Game Puzzles | 47% | — |
| DTBench | 95.7% | — |
| LMCA | 52.9% | — |
| Surface Evolver Bench | 76.9% | — |
| Epoch Capabilities Index | 156.71 | — |
Math Gemini 3.8 Flash leads
Gemini 3.8 Flash: 65.3 (#28), Step 1o Turbo 202506: 36.6 (#164)
| Benchmark | Gemini 3.8 Flash | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Math | 1528 | 1318 |
| FrontierMath (Tiers 1-3) | 68.4% | — |
| FrontierMath Tier 4 | 22% | — |
| OTIS Mock AIME 2024-2025 | 98.9% | — |
| ProofBench | 48% | — |
Knowledge Gemini 3.8 Flash leads
Gemini 3.8 Flash: 74.8 (#2), Step 1o Turbo 202506: 36.1 (#176)
| Benchmark | Gemini 3.8 Flash | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Expert | 1524 | 1308 |
| GPQA Diamond | 95.4% | — |
| Humanity's Last Exam | 44.5% | — |
| SimpleQA Verified | 69.7% | — |
Multimodal Gemini 3.8 Flash leads
Gemini 3.8 Flash: 40.7 (#45), Step 1o Turbo 202506: 36.1 (#80)
| Benchmark | Gemini 3.8 Flash | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Vision | 1314 | 1186 |
| Blueprint-Bench 2 | 38.6% | — |
| Furniture Assembly | 31.7% | — |
Multilingual Gemini 3.8 Flash leads
Gemini 3.8 Flash: 58.0 (#5), Step 1o Turbo 202506: 45.3 (#173)
| Benchmark | Gemini 3.8 Flash | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Non-English | 1491 | 1313 |
| LMArena Chinese | 1554 | 1380 |
| LMArena German | 1493 | 1314 |
| LMArena Russian | 1515 | 1327 |
| LMArena French | 1498 | — |
| LMArena Japanese | 1502 | — |
| LMArena Korean | 1459 | — |
| LMArena Spanish | 1485 | — |
Instruction Following Gemini 3.8 Flash leads
Gemini 3.8 Flash: 78.0 (#13), Step 1o Turbo 202506: 69.2 (#176)
| Benchmark | Gemini 3.8 Flash | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Instruction Following | 1490 | 1310 |
Long Context Gemini 3.8 Flash leads
Gemini 3.8 Flash: 46.3 (#24), Step 1o Turbo 202506: 41.0 (#146)
| Benchmark | Gemini 3.8 Flash | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Longer Query | 1508 | 1348 |
Writing & Preference Gemini 3.8 Flash leads
Gemini 3.8 Flash: 72.2 (#15), Step 1o Turbo 202506: 53.1 (#160)
| Benchmark | Gemini 3.8 Flash | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Text | 1499 | 1336 |
| LMArena Creative Writing | 1492 | 1307 |
| LMArena Multi-Turn | 1501 | 1340 |
| EQ-Bench Creative Writing | 1748 | — |
Frequently asked questions
Is Gemini 3.8 Flash better than Step 1o Turbo 202506?
Gemini 3.8 Flash is the stronger model overall, scoring 61.8 to 39.7 on the Noometry Index.
Is Gemini 3.8 Flash or Step 1o Turbo 202506 better for coding?
Gemini 3.8 Flash scores higher on coding benchmarks: 59.2 versus 39.2 in the Noometry coding category.
How many benchmarks do Gemini 3.8 Flash and Step 1o Turbo 202506 share?
14 benchmarks have published results for both models. Gemini 3.8 Flash has 50 scored results on Noometry and Step 1o Turbo 202506 has 14.