# Gemini 3.7 Flash vs Grok 4.20

> Side-by-side benchmark comparison for Gemini 3.7 Flash and Grok 4.20 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-7-flash-vs-grok-4-20-beta
- Last updated: September 27, 2026

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

## Quick Verdict

Pick Gemini 3.7 Flash if you want the stronger benchmark profile. Grok 4.20 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Gemini 3.7 Flash leads overall 67.66 to 59.66.
- The clearest category separation is in multimodal & grounded, where the averages are 82.6 for Gemini 3.7 Flash and 34.6 for Grok 4.20.
- The biggest single benchmark swing is Terminal-Bench 2.1 (Vals) in Agentic, with scores of 77.5% and 44.2%.
- Grok 4.20 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Grok 4.20 also has the larger context window at 2M.

## Model Snapshot

| Property | Gemini 3.7 Flash | Grok 4.20 |
|----------|----------|----------|
| Creator | Google | xAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 2M |
| Overall Score | 67.66 | 59.66 |
| Benchmarks Covered | 25 | 23 |
| Pricing (input/output) | $0.75 / $3.75 | $1.25 / $2.50 |

## Category Breakdown

### Agentic

- Winner: Gemini 3.7 Flash
- Gemini 3.7 Flash public-lane score: 58.6 (Supported · #20/105)
- Grok 4.20 public-lane score: 24.5 (Supported · #81/105)

| Benchmark | Gemini 3.7 Flash | Grok 4.20 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 85.8% | Coming soon | Coming soon |
| Terminal-Bench 3.0 | 14.9% | Coming soon | Coming soon |
| AutomationBench | 30.4% | Coming soon | Coming soon |
| OSWorld 2.0 | 47.9% | Coming soon | Coming soon |
| Agents' Last Exam | 26.3% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 77.5% | 44.2% | Gemini 3.7 Flash |
| ApprenticeBench | 16% | 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 |

### Coding

- Winner: Gemini 3.7 Flash
- Gemini 3.7 Flash public-lane score: 60.3 (Supported · #17/135)
- Grok 4.20 public-lane score: 23.8 (Supported · #106/135)

| Benchmark | Gemini 3.7 Flash | Grok 4.20 | Winner |
|-----------|-----------|-----------|--------|
| FrontierCode 1.1 Main | 43.6% | Coming soon | Coming soon |
| DeepSWE | 65.3% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 85.8% | Coming soon | Coming soon |
| FrontierSWE v2 | 20.3% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 88.7% | 84.3% | Gemini 3.7 Flash |
| SWE-bench (Vals) | 80.8% | 72.2% | Gemini 3.7 Flash |
| 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 |

### Reasoning

- Winner: Not comparable
- Gemini 3.7 Flash public-lane score: 77.8 (Unranked · 5 rankable rows)
- Grok 4.20 public-lane score: 41.1 (Unranked · 2 rankable rows)

| Benchmark | Gemini 3.7 Flash | Grok 4.20 | Winner |
|-----------|-----------|-----------|--------|
| MRCR v2 64K-128K | 97% | Coming soon | Coming soon |
| ARC-AGI-1 | 95.50% | Coming soon | Coming soon |
| ARC-AGI-2 | 84.6% | 53.3% | Gemini 3.7 Flash |
| ARC-AGI-3 | Coming soon | 0.1% | Coming soon |

### Multimodal & Grounded

- Winner: Directional only
- Gemini 3.7 Flash public-lane score: 82.6 (#10/50)
- Grok 4.20 public-lane score: 34.6 (#45/50)

| Benchmark | Gemini 3.7 Flash | Grok 4.20 | Winner |
|-----------|-----------|-----------|--------|
| CharXiv w/o tools | 84.5% | Coming soon | Coming soon |
| CharXiv | 88.7% | 60.9% | Gemini 3.7 Flash |
| LVBench | 85.4% | Coming soon | Coming soon |
| MMMU-Pro | Coming soon | 75.2% | 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: Gemini 3.7 Flash
- Gemini 3.7 Flash public-lane score: 71.1 (Supported · #10/158)
- Grok 4.20 public-lane score: 51 (Supported · #55/158)

| Benchmark | Gemini 3.7 Flash | Grok 4.20 | Winner |
|-----------|-----------|-----------|--------|
| HLE-Verified | 53.6% | Coming soon | Coming soon |
| LABBench2 | 82.1% | Coming soon | Coming soon |
| BioMysteryBench (human-solvable) | 87.1% | Coming soon | Coming soon |
| BioMysteryBench (human-difficult) | 43.5% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 93.9% | 88.6% | Gemini 3.7 Flash |
| MMLU-Pro (Vals) | 90.1% | 86.3% | Gemini 3.7 Flash |
| 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 |

## FAQ

### Which is better overall, Gemini 3.7 Flash or Grok 4.20?

Gemini 3.7 Flash is ahead overall on BenchLM right now.

### Where is the biggest gap between Gemini 3.7 Flash and Grok 4.20?

The widest category gap is in multimodal & grounded, where the averages are 82.6 for Gemini 3.7 Flash and 34.6 for Grok 4.20.

### How many benchmarks does Gemini 3.7 Flash cover on BenchLM?

Gemini 3.7 Flash currently has 25 sourced benchmark scores on BenchLM.

### How many benchmarks does Grok 4.20 cover on BenchLM?

Grok 4.20 currently has 23 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Gemini 3.7 Flash vs Grok 4.20 Multi-agent](/compare/gemini-3-7-flash-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 3.7 Flash vs GPT-6 Astra](/compare/gemini-3-7-flash-vs-gpt-6-astra)
- [Grok 4.20 vs GPT-6 Astra](/compare/gpt-6-astra-vs-grok-4-20-beta)

## Explore More

- [Gemini 3.7 Flash profile](/models/gemini-3-7-flash)
- [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)