# Gemini 3.6 Flash vs Grok 4.5

> Side-by-side benchmark comparison for Gemini 3.6 Flash and Grok 4.5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-6-flash-vs-grok-4-5
- Last updated: September 4, 2026

- Shared sourced benchmarks: 6
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Gemini 3.6 Flash if you want the stronger benchmark profile. Grok 4.5 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 68.64.
- The clearest category separation is in reasoning, where the averages are 77.8 for Gemini 3.6 Flash and 44.3 for Grok 4.5.
- The biggest single benchmark swing is cursorBench32 in Coding, with scores of 53.5% and 66.7%.
- Grok 4.5 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Gemini 3.6 Flash also has the larger context window at 1M.

## Model Snapshot

| Property | Gemini 3.6 Flash | Grok 4.5 |
|----------|----------|----------|
| Creator | Google | xAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 500K |
| Overall Score | 70.11 | 68.64 |
| Benchmarks Covered | 8 | 15 |
| Pricing (input/output) | $1.50 / $7.50 | $2.00 / $6.00 |

## Category Breakdown

### Agentic

- Winner: Grok 4.5
- Gemini 3.6 Flash public-lane score: 50.7 (Supported · #60/151)
- Grok 4.5 public-lane score: 62.9 (Supported · #17/151)

| Benchmark | Gemini 3.6 Flash | Grok 4.5 | Winner |
|-----------|-----------|-----------|--------|
| OSWorld-Verified | 83% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 73.8% | 67.8% | Gemini 3.6 Flash |
| Terminal-Bench 3.0 | Coming soon | 15.7% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 83.3% | Coming soon |
| deepSwe | Coming soon | 53% | Coming soon |

### Coding

- Winner: Grok 4.5
- Gemini 3.6 Flash public-lane score: 58.9 (Supported · #30/183)
- Grok 4.5 public-lane score: 62.6 (Supported · #17/183)

| Benchmark | Gemini 3.6 Flash | Grok 4.5 | Winner |
|-----------|-----------|-----------|--------|
| deepSwe | 49% | Coming soon | Coming soon |
| cursorBench32 | 53.5% | 66.7% | Grok 4.5 |
| LiveCodeBench (Vals) | 88.1% | 87.4% | Gemini 3.6 Flash |
| SWE-bench (Vals) | 79.6% | 86.6% | Grok 4.5 |
| SWE-bench Pro | Coming soon | 64.7% | Coming soon |
| SWE Multilingual | Coming soon | 78% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 83.3% | Coming soon |
| VulcanBench v3 | Coming soon | 89.9% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Gemini 3.6 Flash public-lane score: 82.3 (Unranked · 1 rankable row)
- Grok 4.5 public-lane score: 78.1 (Unranked · 1 rankable row)

### Reasoning

- Winner: Coming soon
- Gemini 3.6 Flash public-lane score: 77.8 (Unranked · 2 rankable rows)
- Grok 4.5 public-lane score: 44.3 (#22/22)

| Benchmark | Gemini 3.6 Flash | Grok 4.5 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | Coming soon | 52.6% | Coming soon |
| ARC-AGI-3 | Coming soon | 0.3% | Coming soon |

### Knowledge

- Winner: Grok 4.5
- Gemini 3.6 Flash public-lane score: 68.6 (Supported · #18/181)
- Grok 4.5 public-lane score: 70 (Supported · #14/181)

| Benchmark | Gemini 3.6 Flash | Grok 4.5 | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 93.4% | 92.9% | Gemini 3.6 Flash |
| MMLU-Pro (Vals) | 89.3% | 89.2% | Gemini 3.6 Flash |

## FAQ

### Which is better overall, Gemini 3.6 Flash or Grok 4.5?

Gemini 3.6 Flash is ahead overall on BenchLM right now.

### Where is the biggest gap between Gemini 3.6 Flash and Grok 4.5?

The widest category gap is in reasoning, where the averages are 77.8 for Gemini 3.6 Flash and 44.3 for Grok 4.5.

### 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 4.5 cover on BenchLM?

Grok 4.5 currently has 15 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 4.5 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-grok-4-5)
- [Gemini 3.6 Flash vs GPT-6 Astra](/compare/gemini-3-6-flash-vs-gpt-6-astra)
- [Grok 4.5 vs GPT-6 Astra](/compare/gpt-6-astra-vs-grok-4-5)

## Explore More

- [Gemini 3.6 Flash profile](/models/gemini-3-6-flash)
- [Grok 4.5 profile](/models/grok-4-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)