# Gemini 4 Argon vs Grok 4.20

> Side-by-side benchmark comparison for Gemini 4 Argon and Grok 4.20 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-4-argon-vs-grok-4-20-beta
- Last updated: September 30, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Evidence is too thin for a benchmark verdict: Gemini 4 Argon and Grok 4.20 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.
- Grok 4.20 has the lower published output-token price.
- Grok 4.20 has the larger published context window at 2M.

## Model Snapshot

| Property | Gemini 4 Argon | Grok 4.20 |
|----------|----------|----------|
| Creator | Google | xAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | null | 2M |
| Independent public score (not head-to-head) | 64.59 | 59.79 |
| Benchmarks Covered | 17 | 23 |
| Pricing (input/output) | $2.00 / $10.00 | $1.25 / $2.50 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemini 4 Argon public-lane score: 63.7 (Estimated · #14/119)
- Grok 4.20 public-lane score: 23.5 (Supported · #96/119)

| Benchmark | Gemini 4 Argon | Grok 4.20 | Winner |
|-----------|-----------|-----------|--------|
| AutomationBench | 51.3% | Coming soon | Coming soon |
| Finance Agent v2 | 65.4% | Coming soon | Coming soon |
| Terminal-Bench 4.0 | 57.40% | Coming soon | Coming soon |
| Agents' Last Exam | 39.5% | Coming soon | Coming soon |
| OSWorld 2.0 | 69.2% | Coming soon | Coming soon |
| CWE-bench v1 | 68.0% | Coming soon | Coming soon |
| Terminal-Bench-Science 0.1 (6x verifier timeout) | 57.6% | Coming soon | Coming soon |
| 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 |

### Coding

- Winner: Insufficient shared evidence
- Gemini 4 Argon public-lane score: 68.4 (Supported · #8/144)
- Grok 4.20 public-lane score: 22.6 (Supported · #116/144)

| Benchmark | Gemini 4 Argon | Grok 4.20 | Winner |
|-----------|-----------|-----------|--------|
| DeepSWE | 77.9% | Coming soon | Coming soon |
| FrontierSWE v2 | 55.1% | Coming soon | Coming soon |
| Vibe Code Bench | 91.90% | 4.06% | Gemini 4 Argon |
| PostTrainBench v1.1 | 45.3% | 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 |
| LiveCodeBench (Vals) | Coming soon | 84.3% | Coming soon |
| SWE-bench (Vals) | Coming soon | 72.2% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Gemini 4 Argon public-lane score: 77.1 (Unranked · 3 rankable rows)
- Grok 4.20 public-lane score: 41.1 (Unranked · 2 rankable rows)

| Benchmark | Gemini 4 Argon | Grok 4.20 | Winner |
|-----------|-----------|-----------|--------|
| Graphwalks BFS 128K | 99.7% | Coming soon | Coming soon |
| GraphWalks BFS 256K–1M | 84.2% | 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
- Gemini 4 Argon public-lane score: Coming soon
- Grok 4.20 public-lane score: 35.6 (#44/49)

| Benchmark | Gemini 4 Argon | Grok 4.20 | Winner |
|-----------|-----------|-----------|--------|
| Chartography (no tools) | 71.6% | Coming soon | Coming soon |
| LVBench | 91.7% | Coming soon | Coming soon |
| MMMU-Pro | Coming soon | 75.2% | Coming soon |
| 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
- Gemini 4 Argon public-lane score: 72.9 (Supported · #11/170)
- Grok 4.20 public-lane score: 49.4 (Supported · #65/170)

| Benchmark | Gemini 4 Argon | Grok 4.20 | Winner |
|-----------|-----------|-----------|--------|
| LABBench2 | 88.8% | Coming soon | Coming soon |
| GPQA-D | Coming soon | 88.5% | Coming soon |
| HLE w/o tools | Coming soon | 31.6% | 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
- Gemini 4 Argon public-lane score: Coming soon
- Grok 4.20 public-lane score: Coming soon

| Benchmark | Gemini 4 Argon | Grok 4.20 | Winner |
|-----------|-----------|-----------|--------|
| Gray Swan IPI (15 attempts) | 0.7% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between Gemini 4 Argon and Grok 4.20?

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

- [Gemini 4 Argon vs Grok 4.20 Multi-agent](/compare/gemini-4-argon-vs-grok-4-20-multi-agent-beta)
- [Grok 4.20 vs Grok 4.20 Multi-agent](/compare/grok-4-20-beta-vs-grok-4-20-multi-agent-beta)
- [Gemini 4 Argon vs GPT-6 Astra](/compare/gemini-4-argon-vs-gpt-6-astra)
- [Grok 4.20 vs GPT-6 Astra](/compare/gpt-6-astra-vs-grok-4-20-beta)

## Explore More

- [Gemini 4 Argon profile](/models/gemini-4-argon)
- [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)