# Gemini 3 Flash vs Grok 4.6

> Side-by-side benchmark comparison for Gemini 3 Flash and Grok 4.6 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-flash-vs-grok-4-6
- Last updated: September 25, 2026

- Shared sourced benchmarks: 5
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Pick Grok 4.6 if you want the stronger benchmark profile. Gemini 3 Flash only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Grok 4.6 leads overall 69.19 to 55.61.
- The clearest category separation is in agentic, where the averages are 31.8 for Gemini 3 Flash and 67.9 for Grok 4.6.
- The biggest single benchmark swing is Terminal-Bench 2.1 (Vals) in Agentic, with scores of 53.9% and 78.3%.
- Gemini 3 Flash is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Gemini 3 Flash also has the larger context window at 1M.

## Model Snapshot

| Property | Gemini 3 Flash | Grok 4.6 |
|----------|----------|----------|
| Creator | Google | xAI |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 1M | 500K |
| Overall Score | 55.61 | 69.19 |
| Benchmarks Covered | 11 | 17 |
| Pricing (input/output) | $0.50 / $3.00 | $2.00 / $6.00 |

## Category Breakdown

### Agentic

- Winner: Grok 4.6
- Gemini 3 Flash public-lane score: 31.8 (Supported · #63/105)
- Grok 4.6 public-lane score: 67.9 (Supported · #8/105)

| Benchmark | Gemini 3 Flash | Grok 4.6 | Winner |
|-----------|-----------|-----------|--------|
| Claw-Eval | 49.2% | Coming soon | Coming soon |
| Gert Labs | 56.63% | Coming soon | Coming soon |
| JobBench | 11.4% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 53.9% | 78.3% | Grok 4.6 |
| Terminal-Bench 3.0 | Coming soon | 26.5% | Coming soon |
| APEX-Agents | Coming soon | 57.5% | Coming soon |
| ApprenticeBench | Coming soon | 13% | Coming soon |

### Coding

- Winner: Grok 4.6
- Gemini 3 Flash public-lane score: 36.5 (Supported · #67/135)
- Grok 4.6 public-lane score: 62 (Supported · #14/135)

| Benchmark | Gemini 3 Flash | Grok 4.6 | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 20.20% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 85.6% | 88.2% | Grok 4.6 |
| SWE-bench (Vals) | 75.0% | 95.6% | Grok 4.6 |
| Bug Hunt Bench | Coming soon | 27 fixes | Coming soon |
| DeepSWE | Coming soon | 65.9% | Coming soon |
| cursorBench32 | Coming soon | 70.8% | Coming soon |
| FrontierCode 1.1 Extended | Coming soon | 61.3% | Coming soon |
| VulcanBench v3 | Coming soon | 87.0% | Coming soon |
| FrontierSWE v2 | Coming soon | 25.3% | Coming soon |

### Reasoning

- Winner: Not comparable
- Gemini 3 Flash public-lane score: 60.1 (Unranked · 2 rankable rows)
- Grok 4.6 public-lane score: 57.6 (#16/19)

| Benchmark | Gemini 3 Flash | Grok 4.6 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-1 | Coming soon | 87.00% | Coming soon |
| ARC-AGI-2 | Coming soon | 67.1% | Coming soon |
| ARC-AGI-3 | Coming soon | 2.1% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Gemini 3 Flash public-lane score: 75.8 (Unranked · 1 rankable row)
- Grok 4.6 public-lane score: Coming soon

### Knowledge

- Winner: Grok 4.6
- Gemini 3 Flash public-lane score: 54.5 (Supported · #42/158)
- Grok 4.6 public-lane score: 69 (Supported · #13/158)

| Benchmark | Gemini 3 Flash | Grok 4.6 | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 87.9% | 94.7% | Grok 4.6 |
| MMLU-Pro (Vals) | 88.6% | 89.4% | Grok 4.6 |

### Instruction Following

- Winner: Not comparable
- Gemini 3 Flash public-lane score: 64.7 (#70/124)
- Grok 4.6 public-lane score: Coming soon

### Mathematics

- Winner: Not comparable
- Gemini 3 Flash public-lane score: 50 (Unranked · 2 rankable rows)
- Grok 4.6 public-lane score: Coming soon

| Benchmark | Gemini 3 Flash | Grok 4.6 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 35.640% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 4.167% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Gemini 3 Flash or Grok 4.6?

Grok 4.6 is ahead overall on BenchLM right now.

### Where is the biggest gap between Gemini 3 Flash and Grok 4.6?

The widest category gap is in agentic, where the averages are 31.8 for Gemini 3 Flash and 67.9 for Grok 4.6.

### How many benchmarks does Gemini 3 Flash cover on BenchLM?

Gemini 3 Flash currently has 11 sourced benchmark scores on BenchLM.

### How many benchmarks does Grok 4.6 cover on BenchLM?

Grok 4.6 currently has 17 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Gemini 3 Flash vs GPT-6 Astra](/compare/gemini-3-flash-vs-gpt-6-astra)
- [Grok 4.6 vs GPT-6 Astra](/compare/gpt-6-astra-vs-grok-4-6)
- [Gemini 3 Flash vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-gemini-3-flash)
- [Grok 4.6 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-grok-4-6)

## Explore More

- [Gemini 3 Flash profile](/models/gemini-3-flash)
- [Grok 4.6 profile](/models/grok-4-6)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)