# Grok 4.20 vs Beam 1.0 501B-A23B NVFP4

> Side-by-side benchmark comparison for Grok 4.20 and Beam 1.0 501B-A23B NVFP4 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/grok-4-20-beta-vs-reflection-beam-nvfp4
- Last updated: October 16, 2026

- Shared sourced benchmarks: 5
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Beam 1.0 501B-A23B NVFP4 leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- Beam 1.0 501B-A23B NVFP4 has the higher overall point estimate 70 to 57.42. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in reasoning, where the averages are 44.9 for Grok 4.20 and 85.5 for Beam 1.0 501B-A23B NVFP4.
- The biggest single benchmark swing is DeepSearchQA in Agentic, with scores of 62.8% and 81.1%.
- Beam 1.0 501B-A23B NVFP4 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Grok 4.20 also has the larger context window at 2M.

## Model Snapshot

| Property | Grok 4.20 | Beam 1.0 501B-A23B NVFP4 |
|----------|----------|----------|
| Creator | xAI | Reflection AI |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 2M | 1M |
| Overall Score | 57.42 | null |
| Benchmarks Covered | 24 | 19 |
| Pricing (input/output) | $1.25 / $2.50 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Grok 4.20 public-lane score: 25.1 (Supported · #103/128)
- Beam 1.0 501B-A23B NVFP4 public-lane score: Coming soon

| Benchmark | Grok 4.20 | Beam 1.0 501B-A23B NVFP4 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 47.1% | Coming soon | Coming soon |
| DeepSearchQA | 62.8% | 81.1% | Beam 1.0 501B-A23B NVFP4 |
| Gert Labs | 38.36% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 44.2% | Coming soon | Coming soon |
| MazeBench | 0% | Coming soon | Coming soon |
| τ³-bench results | Coming soon | 35.4% | Coming soon |
| HLE w/ tools | Coming soon | 51.1% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 78.4% | Coming soon |
| MCP Atlas | Coming soon | 80.5% | Coming soon |
| BrowseComp | Coming soon | 75.6% | Coming soon |

### Coding

- Winner: Not comparable
- Grok 4.20 public-lane score: 21.6 (Supported · #118/150)
- Beam 1.0 501B-A23B NVFP4 public-lane score: Coming soon

| Benchmark | Grok 4.20 | Beam 1.0 501B-A23B NVFP4 | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench Pro | 74.2% | Coming soon | Coming soon |
| SWE-bench Verified | 76.7% | 80.7% | Beam 1.0 501B-A23B NVFP4 |
| SWE-bench Pro | 51.8% | 65.6% | Beam 1.0 501B-A23B NVFP4 |
| Vibe Code Bench | 4.06% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 84.3% | Coming soon | Coming soon |
| SWE-bench (Vals) | 72.2% | Coming soon | Coming soon |
| DeepSWE | Coming soon | 42.7% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 78.4% | Coming soon |
| SWE-Atlas Codebase QnA | Coming soon | 31.4% | Coming soon |
| SWE Multilingual | Coming soon | 77.5% | Coming soon |
| SciCode | Coming soon | 46.9% | Coming soon |

### Reasoning

- Winner: Not comparable
- Grok 4.20 public-lane score: 44.9 (Unranked · 2 rankable rows)
- Beam 1.0 501B-A23B NVFP4 public-lane score: 85.5 (Unranked · 3 rankable rows)

| Benchmark | Grok 4.20 | Beam 1.0 501B-A23B NVFP4 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 53.3% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.1% | Coming soon | Coming soon |
| CritPt | Coming soon | 15.4% | Coming soon |
| LongBench v2 | Coming soon | 67.2% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Grok 4.20 public-lane score: 53.4 (#47/54)
- Beam 1.0 501B-A23B NVFP4 public-lane score: Coming soon

| Benchmark | Grok 4.20 | Beam 1.0 501B-A23B NVFP4 | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 75.2% | Coming soon | Coming soon |
| CharXiv | 60.9% | Coming soon | Coming soon |
| ERQA | 54.1% | Coming soon | Coming soon |
| SimpleVQA | 57.4% | Coming soon | Coming soon |
| MedXpertQA (MM) | 65.8% | Coming soon | Coming soon |

### Knowledge

- Winner: Not comparable
- Grok 4.20 public-lane score: 53 (Supported · #69/184)
- Beam 1.0 501B-A23B NVFP4 public-lane score: Coming soon

| Benchmark | Grok 4.20 | Beam 1.0 501B-A23B NVFP4 | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 88.5% | 89.3% | Beam 1.0 501B-A23B NVFP4 |
| HLE w/o tools | 31.6% | 34.8% | Beam 1.0 501B-A23B NVFP4 |
| HealthBench Hard | 20.3% | Coming soon | Coming soon |
| MedXpertQA (Text) | 50.2% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 88.6% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 86.3% | Coming soon | Coming soon |

### Instruction Following

- Winner: Not comparable
- Grok 4.20 public-lane score: Coming soon
- Beam 1.0 501B-A23B NVFP4 public-lane score: 86.2 (#44/148)

| Benchmark | Grok 4.20 | Beam 1.0 501B-A23B NVFP4 | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 79.2% | Coming soon |

### Mathematics

- Winner: Not comparable
- Grok 4.20 public-lane score: Coming soon
- Beam 1.0 501B-A23B NVFP4 public-lane score: 87.9 (Unranked · 1 rankable row)

| Benchmark | Grok 4.20 | Beam 1.0 501B-A23B NVFP4 | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | Coming soon | 97.5% | Coming soon |

## FAQ

### Which is better overall, Grok 4.20 or Beam 1.0 501B-A23B NVFP4?

Beam 1.0 501B-A23B NVFP4 has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between Grok 4.20 and Beam 1.0 501B-A23B NVFP4?

The widest category gap is in reasoning, where the averages are 44.9 for Grok 4.20 and 85.5 for Beam 1.0 501B-A23B NVFP4.

### How many benchmarks does Grok 4.20 cover on BenchLM?

Grok 4.20 currently has 24 sourced benchmark scores on BenchLM.

### How many benchmarks does Beam 1.0 501B-A23B NVFP4 cover on BenchLM?

Beam 1.0 501B-A23B NVFP4 currently has 19 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Grok 4.20 vs Grok 4.20 Multi-agent](/compare/grok-4-20-beta-vs-grok-4-20-multi-agent-beta)
- [Beam 1.0 501B-A23B NVFP4 vs Grok 4.20 Multi-agent](/compare/grok-4-20-multi-agent-beta-vs-reflection-beam-nvfp4)
- [Grok 4.20 vs Beam 1.0 501B-A23B](/compare/grok-4-20-beta-vs-reflection-beam)
- [Beam 1.0 501B-A23B NVFP4 vs Beam 1.0 501B-A23B](/compare/reflection-beam-vs-reflection-beam-nvfp4)

## Explore More

- [Grok 4.20 profile](/models/grok-4-20-beta)
- [Beam 1.0 501B-A23B NVFP4 profile](/models/reflection-beam-nvfp4)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)