# Gemma 4 31B vs Grok 3 [Beta]

> Side-by-side benchmark comparison for Gemma 4 31B and Grok 3 [Beta] across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemma-4-31b-vs-grok-3-beta
- Last updated: October 17, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Gemma 4 31B and Grok 3 [Beta] share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Grok 3 [Beta] has the lower published output-token price.
- Gemma 4 31B has the larger published context window at 256K.

## Model Snapshot

| Property | Gemma 4 31B | Grok 3 [Beta] |
|----------|----------|----------|
| Creator | Google | xAI |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 256K | 128K |
| Independent public score (not head-to-head) | 39.89 | 40.98 |
| Benchmarks Covered | 10 | 5 |
| Pricing (input/output) | $0.00 / $0.00 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemma 4 31B public-lane score: 19.7 (Estimated · #109/128)
- Grok 3 [Beta] public-lane score: Coming soon

| Benchmark | Gemma 4 31B | Grok 3 [Beta] | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 35.26% | Coming soon | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Gemma 4 31B public-lane score: 31.7 (Supported · #89/150)
- Grok 3 [Beta] public-lane score: Coming soon

| Benchmark | Gemma 4 31B | Grok 3 [Beta] | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench v6 | 80.0% | Coming soon | Coming soon |
| SWE-Rebench | 41.6% | Coming soon | Coming soon |
| React Native Evals | 75.2% | Coming soon | Coming soon |
| LiveCodeBench | Coming soon | 57% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Gemma 4 31B public-lane score: 66.6 (Unranked · 3 rankable rows)
- Grok 3 [Beta] public-lane score: Coming soon

| Benchmark | Gemma 4 31B | Grok 3 [Beta] | Winner |
|-----------|-----------|-----------|--------|
| MRCRv2 | 66.4% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Gemma 4 31B public-lane score: 74.3 (#26/54)
- Grok 3 [Beta] public-lane score: Coming soon

| Benchmark | Gemma 4 31B | Grok 3 [Beta] | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 76.9% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Gemma 4 31B public-lane score: 40.9 (Supported · #114/184)
- Grok 3 [Beta] public-lane score: 41.3 (Estimated · #113/184)

| Benchmark | Gemma 4 31B | Grok 3 [Beta] | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 84.3% | 75.4% | Gemma 4 31B |
| MMLU-Pro | 85.2% | 79.9% | Gemma 4 31B |
| HLE | 26.5% | Coming soon | Coming soon |
| HLE w/o tools | 19.5% | Coming soon | Coming soon |
| SimpleQA | Coming soon | 43.6% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Gemma 4 31B public-lane score: 92.9 (#15/148)
- Grok 3 [Beta] public-lane score: Coming soon

### Mathematics

- Winner: Insufficient shared evidence
- Gemma 4 31B public-lane score: Coming soon
- Grok 3 [Beta] public-lane score: Coming soon

| Benchmark | Gemma 4 31B | Grok 3 [Beta] | Winner |
|-----------|-----------|-----------|--------|
| AIME 2024 | Coming soon | 52.2% | Coming soon |

## FAQ

### Is there enough evidence to pick between Gemma 4 31B and Grok 3 [Beta]?

Not yet. The models share only 2 sourced benchmark rows, 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)
- [Grok 3 [Beta] vs Gemma 4 26B A4B](/compare/gemma-4-26b-a4b-vs-grok-3-beta)
- [Gemma 4 31B vs Gemma 4 12B](/compare/gemma-4-12b-vs-gemma-4-31b)
- [Grok 3 [Beta] vs Gemma 4 12B](/compare/gemma-4-12b-vs-grok-3-beta)

## Explore More

- [Gemma 4 31B profile](/models/gemma-4-31b)
- [Grok 3 [Beta] profile](/models/grok-3-beta)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)