# Grok 4.3 vs Grok 4.6

> Side-by-side benchmark comparison for Grok 4.3 and Grok 4.6 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/grok-4-3-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. Grok 4.3 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 54.73.
- The clearest category separation is in agentic, where the averages are 25.6 for Grok 4.3 and 67.9 for Grok 4.6.
- The biggest single benchmark swing is Terminal-Bench 2.1 (Vals) in Agentic, with scores of 41.9% and 78.3%.
- Grok 4.3 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Grok 4.3 also has the larger context window at 1M.

## Model Snapshot

| Property | Grok 4.3 | Grok 4.6 |
|----------|----------|----------|
| Creator | xAI | xAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 500K |
| Overall Score | 54.73 | 69.19 |
| Benchmarks Covered | 7 | 17 |
| Pricing (input/output) | $1.25 / $2.50 | $2.00 / $6.00 |

## Category Breakdown

### Agentic

- Winner: Grok 4.6
- Grok 4.3 public-lane score: 25.6 (Supported · #76/105)
- Grok 4.6 public-lane score: 67.9 (Supported · #8/105)

| Benchmark | Grok 4.3 | Grok 4.6 | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 43.86% | Coming soon | Coming soon |
| ResearchClawBench | 12.4% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 41.9% | 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
- Grok 4.3 public-lane score: 29.5 (Supported · #88/135)
- Grok 4.6 public-lane score: 62 (Supported · #14/135)

| Benchmark | Grok 4.3 | Grok 4.6 | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench (Vals) | 84.5% | 88.2% | Grok 4.6 |
| SWE-bench (Vals) | 71.4% | 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
- Grok 4.3 public-lane score: 66.3 (Unranked · 2 rankable rows)
- Grok 4.6 public-lane score: 57.6 (#16/19)

| Benchmark | Grok 4.3 | 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
- Grok 4.3 public-lane score: 65.7 (#26/50)
- Grok 4.6 public-lane score: Coming soon

### Knowledge

- Winner: Grok 4.6
- Grok 4.3 public-lane score: 53 (Supported · #49/158)
- Grok 4.6 public-lane score: 69 (Supported · #13/158)

| Benchmark | Grok 4.3 | Grok 4.6 | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 91.4% | 94.7% | Grok 4.6 |
| MMLU-Pro (Vals) | 85.8% | 89.4% | Grok 4.6 |

### Instruction Following

- Winner: Not comparable
- Grok 4.3 public-lane score: 93.2 (#2/124)
- Grok 4.6 public-lane score: Coming soon

## FAQ

### Which is better overall, Grok 4.3 or Grok 4.6?

Grok 4.6 is ahead overall on BenchLM right now.

### Where is the biggest gap between Grok 4.3 and Grok 4.6?

The widest category gap is in agentic, where the averages are 25.6 for Grok 4.3 and 67.9 for Grok 4.6.

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

Grok 4.3 currently has 7 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

- [Grok 4.3 vs GPT-6 Astra](/compare/gpt-6-astra-vs-grok-4-3)
- [Grok 4.6 vs GPT-6 Astra](/compare/gpt-6-astra-vs-grok-4-6)
- [Grok 4.3 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-grok-4-3)
- [Grok 4.6 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-grok-4-6)

## Explore More

- [Grok 4.3 profile](/models/grok-4-3)
- [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)