# Gemini 3 Pro vs Grok 4.5

> Side-by-side benchmark comparison for Gemini 3 Pro and Grok 4.5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-pro-vs-grok-4-5
- Last updated: September 18, 2026

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

## Quick Verdict

Evidence is too thin for a benchmark verdict: Gemini 3 Pro and Grok 4.5 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 4.5 has the lower published output-token price.
- Gemini 3 Pro has the larger published context window at 2M.

## Model Snapshot

| Property | Gemini 3 Pro | Grok 4.5 |
|----------|----------|----------|
| Creator | Google | xAI |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 2M | 500K |
| Independent public score (not head-to-head) | 66.36 | 67.99 |
| Benchmarks Covered | 12 | 15 |
| Pricing (input/output) | $2.00 / $12.00 | $2.00 / $6.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemini 3 Pro public-lane score: 59.3 (Estimated · #26/154)
- Grok 4.5 public-lane score: 59.5 (Supported · #25/154)

| Benchmark | Gemini 3 Pro | Grok 4.5 | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 63.23% | Coming soon | Coming soon |
| JobBench | 11.4% | Coming soon | Coming soon |
| 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 |
| Terminal-Bench 2.1 (Vals) | Coming soon | 67.8% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Gemini 3 Pro public-lane score: 59.8 (Estimated · #22/154)
- Grok 4.5 public-lane score: 62 (Supported · #16/154)

| Benchmark | Gemini 3 Pro | Grok 4.5 | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 14.30% | Coming soon | Coming soon |
| 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 |
| cursorBench32 | Coming soon | 66.7% | Coming soon |
| VulcanBench v3 | Coming soon | 89.9% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 87.4% | Coming soon |
| SWE-bench (Vals) | Coming soon | 86.6% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Gemini 3 Pro public-lane score: 74.2 (#17/48)
- Grok 4.5 public-lane score: 78.5 (Unranked · 1 rankable row)

| Benchmark | Gemini 3 Pro | Grok 4.5 | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 81% | Coming soon | Coming soon |
| MathVision | 86.6% | Coming soon | Coming soon |
| VideoMMMU | 87.6% | Coming soon | Coming soon |
| ScreenSpot Pro | 72.7% | Coming soon | Coming soon |
| CharXiv | 81.4% | Coming soon | Coming soon |
| V* | 88.0% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Gemini 3 Pro public-lane score: 36.7 (Unranked · 3 rankable rows)
- Grok 4.5 public-lane score: 44.8 (#20/20)

| Benchmark | Gemini 3 Pro | Grok 4.5 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 31.1% | 52.6% | Grok 4.5 |
| ARC-AGI-3 | Coming soon | 0.3% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Gemini 3 Pro public-lane score: 64.6 (Estimated · #26/184)
- Grok 4.5 public-lane score: 69.4 (Supported · #14/184)

| Benchmark | Gemini 3 Pro | Grok 4.5 | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | Coming soon | 92.9% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 89.2% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Gemini 3 Pro public-lane score: 84.7 (#39/124)
- Grok 4.5 public-lane score: Coming soon

### Mathematics

- Winner: Insufficient shared evidence
- Gemini 3 Pro public-lane score: 55.2 (Unranked · 2 rankable rows)
- Grok 4.5 public-lane score: Coming soon

| Benchmark | Gemini 3 Pro | Grok 4.5 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 37.600% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 18.750% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between Gemini 3 Pro and Grok 4.5?

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 3 Pro vs Gemini 3 Pro Deep Think](/compare/gemini-3-pro-vs-gemini-3-pro-deep-think)
- [Grok 4.5 vs Gemini 3 Pro Deep Think](/compare/gemini-3-pro-deep-think-vs-grok-4-5)
- [Gemini 3 Pro vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-gemini-3-pro)
- [Grok 4.5 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-grok-4-5)

## Explore More

- [Gemini 3 Pro profile](/models/gemini-3-pro)
- [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)