# Grok 4 vs Mercury 3

> Side-by-side benchmark comparison for Grok 4 and Mercury 3 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/grok-4-vs-mercury-3
- Last updated: October 19, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Grok 4 and Mercury 3.

## Summary

- Grok 4 and Mercury 3 do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | Grok 4 | Mercury 3 |
|----------|----------|----------|
| Creator | xAI | Inception |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 128K | 1M |
| Independent public score (not head-to-head) | 51.77 | null |
| Benchmarks Covered | 2 | 8 |
| Pricing (input/output) | Pricing unavailable / Pricing unavailable | $0.10 / $0.35 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Grok 4 public-lane score: Coming soon
- Mercury 3 public-lane score: Coming soon

| Benchmark | Grok 4 | Mercury 3 | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 42.34% | Coming soon | Coming soon |
| τ³-bench results | Coming soon | 30.2% | Coming soon |
| BrowseComp+ | Coming soon | 55.18% | Coming soon |
| DeepSearchQA | Coming soon | 71.3% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Grok 4 public-lane score: Coming soon
- Mercury 3 public-lane score: Coming soon

| Benchmark | Grok 4 | Mercury 3 | Winner |
|-----------|-----------|-----------|--------|
| React Native Evals | 72.6% | Coming soon | Coming soon |
| DeepSWE | Coming soon | 46.3% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Grok 4 public-lane score: 71.7 (Unranked · 2 rankable rows)
- Mercury 3 public-lane score: Coming soon

| Benchmark | Grok 4 | Mercury 3 | Winner |
|-----------|-----------|-----------|--------|
| MRCRv2 | Coming soon | 75.5% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Grok 4 public-lane score: 65.9 (Unranked · 1 rankable row)
- Mercury 3 public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- Grok 4 public-lane score: 50.3 (Estimated · #83/186)
- Mercury 3 public-lane score: Coming soon

| Benchmark | Grok 4 | Mercury 3 | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | Coming soon | 89.2% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Grok 4 public-lane score: 64.3 (#78/148)
- Mercury 3 public-lane score: Coming soon

| Benchmark | Grok 4 | Mercury 3 | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 76.8% | Coming soon |
| MultiChallenge (provider reports) | Coming soon | 60.35% | Coming soon |

## FAQ

### Can I compare Grok 4 and Mercury 3 on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [Grok 4 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-grok-4)
- [Mercury 3 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-mercury-3)
- [Grok 4 vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-grok-4)
- [Mercury 3 vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-mercury-3)

## Explore More

- [Grok 4 profile](/models/grok-4)
- [Mercury 3 profile](/models/mercury-3)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)