# Gemma 4 31B vs Step 3.5 Flash

> Side-by-side benchmark comparison for Gemma 4 31B and Step 3.5 Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemma-4-31b-vs-step-3-5-flash
- Last updated: October 23, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Gemma 4 31B and Step 3.5 Flash share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Gemma 4 31B has the lower published output-token price.

## Model Snapshot

| Property | Gemma 4 31B | Step 3.5 Flash |
|----------|----------|----------|
| Creator | Google | StepFun |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 256K | 256K |
| Independent public score (not head-to-head) | 39.76 | 42.03 |
| Benchmarks Covered | 11 | 3 |
| Pricing (input/output) | $0.00 / $0.00 | $0.10 / $0.30 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemma 4 31B public-lane score: 20 (Estimated · #112/132)
- Step 3.5 Flash public-lane score: Coming soon

| Benchmark | Gemma 4 31B | Step 3.5 Flash | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 35.26% | Coming soon | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Gemma 4 31B public-lane score: 31.7 (Supported · #91/153)
- Step 3.5 Flash public-lane score: Coming soon

| Benchmark | Gemma 4 31B | Step 3.5 Flash | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench v6 | 80.0% | 86.4% | Step 3.5 Flash |
| SWE-Rebench | 41.6% | Coming soon | Coming soon |
| React Native Evals | 75.2% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 74.4% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Gemma 4 31B public-lane score: 65.8 (Unranked · 3 rankable rows)
- Step 3.5 Flash public-lane score: Coming soon

| Benchmark | Gemma 4 31B | Step 3.5 Flash | Winner |
|-----------|-----------|-----------|--------|
| MRCRv2 | 66.4% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Gemma 4 31B public-lane score: 74.7 (#25/56)
- Step 3.5 Flash public-lane score: Coming soon

| Benchmark | Gemma 4 31B | Step 3.5 Flash | Winner |
|-----------|-----------|-----------|--------|
| ParseBench | 62.40% | Coming soon | Coming soon |
| MMMU-Pro | 76.9% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Gemma 4 31B public-lane score: 40.3 (Supported · #117/187)
- Step 3.5 Flash public-lane score: Coming soon

| Benchmark | Gemma 4 31B | Step 3.5 Flash | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 84.3% | Coming soon | Coming soon |
| MMLU-Pro | 85.2% | Coming soon | Coming soon |
| HLE | 26.5% | Coming soon | Coming soon |
| HLE w/o tools | 19.5% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Gemma 4 31B public-lane score: 92.9 (#16/153)
- Step 3.5 Flash public-lane score: Coming soon

### Mathematics

- Winner: Insufficient shared evidence
- Gemma 4 31B public-lane score: Coming soon
- Step 3.5 Flash public-lane score: Coming soon

| Benchmark | Gemma 4 31B | Step 3.5 Flash | Winner |
|-----------|-----------|-----------|--------|
| AIME 2025 | Coming soon | 97.3% | Coming soon |

## FAQ

### Is there enough evidence to pick between Gemma 4 31B and Step 3.5 Flash?

Not yet. The models share only 1 sourced benchmark row, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Gemma 4 31B vs Gemma 4 26B A4B](/compare/gemma-4-26b-a4b-vs-gemma-4-31b)
- [Step 3.5 Flash vs Gemma 4 26B A4B](/compare/gemma-4-26b-a4b-vs-step-3-5-flash)
- [Gemma 4 31B vs Gemma 4 12B](/compare/gemma-4-12b-vs-gemma-4-31b)
- [Step 3.5 Flash vs Gemma 4 12B](/compare/gemma-4-12b-vs-step-3-5-flash)

## Explore More

- [Gemma 4 31B profile](/models/gemma-4-31b)
- [Step 3.5 Flash profile](/models/step-3-5-flash)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)