# Gemini 3.6 Flash vs Grok 4.3

> Side-by-side benchmark comparison for Gemini 3.6 Flash and Grok 4.3 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

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

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

## Quick Verdict

Pick Gemini 3.6 Flash if you want the stronger benchmark profile. Grok 4.3 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Gemini 3.6 Flash leads overall 70.11 to 60.38.
- The clearest category separation is in agentic, where the averages are 50.7 for Gemini 3.6 Flash and 25 for Grok 4.3.
- The biggest single benchmark swing is Terminal-Bench 2.1 (Vals) in Agentic, with scores of 73.8% and 41.9%.
- Grok 4.3 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Gemini 3.6 Flash | Grok 4.3 |
|----------|----------|----------|
| Creator | Google | xAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | 70.11 | 60.38 |
| Benchmarks Covered | 8 | 7 |
| Pricing (input/output) | $1.50 / $7.50 | $1.25 / $2.50 |

## Category Breakdown

### Agentic

- Winner: Gemini 3.6 Flash
- Gemini 3.6 Flash public-lane score: 50.7 (Supported · #60/151)
- Grok 4.3 public-lane score: 25 (Supported · #147/151)

| Benchmark | Gemini 3.6 Flash | Grok 4.3 | Winner |
|-----------|-----------|-----------|--------|
| OSWorld-Verified | 83% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 73.8% | 41.9% | Gemini 3.6 Flash |
| Gert Labs | Coming soon | 43.86% | Coming soon |
| ResearchClawBench | Coming soon | 12.4% | Coming soon |

### Coding

- Winner: Gemini 3.6 Flash
- Gemini 3.6 Flash public-lane score: 58.9 (Supported · #30/183)
- Grok 4.3 public-lane score: 33.7 (Supported · #159/183)

| Benchmark | Gemini 3.6 Flash | Grok 4.3 | Winner |
|-----------|-----------|-----------|--------|
| deepSwe | 49% | Coming soon | Coming soon |
| cursorBench32 | 53.5% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 88.1% | 84.5% | Gemini 3.6 Flash |
| SWE-bench (Vals) | 79.6% | 71.4% | Gemini 3.6 Flash |

### Multimodal & Grounded

- Winner: Coming soon
- Gemini 3.6 Flash public-lane score: 82.3 (Unranked · 1 rankable row)
- Grok 4.3 public-lane score: 64.9 (#25/48)

### Reasoning

- Winner: Coming soon
- Gemini 3.6 Flash public-lane score: 77.8 (Unranked · 2 rankable rows)
- Grok 4.3 public-lane score: 67.2 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Gemini 3.6 Flash
- Gemini 3.6 Flash public-lane score: 68.6 (Supported · #18/181)
- Grok 4.3 public-lane score: 57.3 (Supported · #49/181)

| Benchmark | Gemini 3.6 Flash | Grok 4.3 | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 93.4% | 91.4% | Gemini 3.6 Flash |
| MMLU-Pro (Vals) | 89.3% | 85.8% | Gemini 3.6 Flash |

### Instruction Following

- Winner: Coming soon
- Gemini 3.6 Flash public-lane score: Coming soon
- Grok 4.3 public-lane score: 94.4 (#2/120)

## FAQ

### Which is better overall, Gemini 3.6 Flash or Grok 4.3?

Gemini 3.6 Flash is ahead overall on BenchLM right now.

### Where is the biggest gap between Gemini 3.6 Flash and Grok 4.3?

The widest category gap is in agentic, where the averages are 50.7 for Gemini 3.6 Flash and 25 for Grok 4.3.

### How many benchmarks does Gemini 3.6 Flash cover on BenchLM?

Gemini 3.6 Flash currently has 8 sourced benchmark scores on BenchLM.

### How many benchmarks does Grok 4.3 cover on BenchLM?

Grok 4.3 currently has 7 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Gemini 3.6 Flash vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-gemini-3-6-flash)
- [Grok 4.3 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-grok-4-3)
- [Gemini 3.6 Flash vs GPT-6 Astra](/compare/gemini-3-6-flash-vs-gpt-6-astra)
- [Grok 4.3 vs GPT-6 Astra](/compare/gpt-6-astra-vs-grok-4-3)

## Explore More

- [Gemini 3.6 Flash profile](/models/gemini-3-6-flash)
- [Grok 4.3 profile](/models/grok-4-3)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)