# Gemma 4 26B A4B vs Grok 4.20

> Side-by-side benchmark comparison for Gemma 4 26B A4B and Grok 4.20 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemma-4-26b-a4b-vs-grok-4-20-beta
- Last updated: October 27, 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 26B A4B and Grok 4.20 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.
- Gemma 4 26B A4B has the lower published output-token price.
- Grok 4.20 has the larger published context window at 2M.

## Model Snapshot

| Property | Gemma 4 26B A4B | Grok 4.20 |
|----------|----------|----------|
| Creator | Google | xAI |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 256K | 2M |
| Independent public score (not head-to-head) | 45.84 | 57.6 |
| Benchmarks Covered | 9 | 24 |
| Pricing (input/output) | $0.00 / $0.00 | $1.25 / $2.50 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemma 4 26B A4B public-lane score: Coming soon
- Grok 4.20 public-lane score: 25.6 (Supported · #109/134)

| Benchmark | Gemma 4 26B A4B | Grok 4.20 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | Coming soon | 47.1% | Coming soon |
| DeepSearchQA | Coming soon | 62.8% | Coming soon |
| Gert Labs | Coming soon | 38.36% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 44.2% | Coming soon |
| MazeBench | Coming soon | 0% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Gemma 4 26B A4B public-lane score: 31.3 (Supported · #97/155)
- Grok 4.20 public-lane score: 21.8 (Supported · #122/155)

| Benchmark | Gemma 4 26B A4B | Grok 4.20 | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench v6 | 77.1% | Coming soon | Coming soon |
| LiveCodeBench Pro | Coming soon | 74.2% | Coming soon |
| SWE-bench Verified | Coming soon | 76.7% | Coming soon |
| SWE-bench Pro | Coming soon | 51.8% | Coming soon |
| Vibe Code Bench | Coming soon | 4.06% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 84.3% | Coming soon |
| SWE-bench (Vals) | Coming soon | 72.2% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Gemma 4 26B A4B public-lane score: 52.8 (Unranked · 3 rankable rows)
- Grok 4.20 public-lane score: 44.9 (Unranked · 2 rankable rows)

| Benchmark | Gemma 4 26B A4B | Grok 4.20 | Winner |
|-----------|-----------|-----------|--------|
| MRCRv2 | 44.1% | Coming soon | Coming soon |
| ARC-AGI-2 | Coming soon | 53.3% | Coming soon |
| ARC-AGI-3 | Coming soon | 0.1% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Gemma 4 26B A4B public-lane score: 67.4 (#43/58)
- Grok 4.20 public-lane score: 54.3 (#50/58)

| Benchmark | Gemma 4 26B A4B | Grok 4.20 | Winner |
|-----------|-----------|-----------|--------|
| ExtractBench (LlamaIndex) | 70.27% | Coming soon | Coming soon |
| ParseBench | 58.50% | Coming soon | Coming soon |
| MMMU-Pro | 73.8% | 75.2% | Grok 4.20 |
| CharXiv | Coming soon | 60.9% | Coming soon |
| ERQA | Coming soon | 54.1% | Coming soon |
| SimpleVQA | Coming soon | 57.4% | Coming soon |
| MedXpertQA (MM) | Coming soon | 65.8% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Gemma 4 26B A4B public-lane score: 39.9 (Estimated · #122/189)
- Grok 4.20 public-lane score: 52.8 (Supported · #72/189)

| Benchmark | Gemma 4 26B A4B | Grok 4.20 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 82.3% | Coming soon | Coming soon |
| MMLU-Pro | 82.6% | Coming soon | Coming soon |
| HLE | 17.2% | Coming soon | Coming soon |
| HLE w/o tools | 8.7% | 31.6% | Grok 4.20 |
| GPQA-D | Coming soon | 88.5% | Coming soon |
| HealthBench Hard | Coming soon | 20.3% | Coming soon |
| MedXpertQA (Text) | Coming soon | 50.2% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 88.6% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 86.3% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Gemma 4 26B A4B public-lane score: 88.7 (#37/156)
- Grok 4.20 public-lane score: Coming soon

## FAQ

### Is there enough evidence to pick between Gemma 4 26B A4B and Grok 4.20?

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 26B A4B vs Gemma 4 31B](/compare/gemma-4-26b-a4b-vs-gemma-4-31b)
- [Grok 4.20 vs Gemma 4 31B](/compare/gemma-4-31b-vs-grok-4-20-beta)
- [Gemma 4 26B A4B vs Gemma 4 12B](/compare/gemma-4-12b-vs-gemma-4-26b-a4b)
- [Grok 4.20 vs Gemma 4 12B](/compare/gemma-4-12b-vs-grok-4-20-beta)

## Explore More

- [Gemma 4 26B A4B profile](/models/gemma-4-26b-a4b)
- [Grok 4.20 profile](/models/grok-4-20-beta)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)