# Grok 4.5 vs Beam

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

- Canonical page: https://benchlm.ai/compare/grok-4-5-vs-reflection-beam
- Last updated: October 5, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Pick Grok 4.5 if you want the stronger benchmark profile. Beam only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Grok 4.5 leads overall 63.89 to 0.
- The biggest single benchmark swing is Terminal-Bench 2.1 in Agentic, with scores of 83.3% and 80.1%.
- Beam is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Grok 4.5 also has the larger context window at 500K.

## Model Snapshot

| Property | Grok 4.5 | Beam |
|----------|----------|----------|
| Creator | xAI | Reflection AI |
| Type | Proprietary | Pending |
| Reasoning | Reasoning | Reasoning |
| Context | 500K | null |
| Overall Score | 63.89 | null |
| Benchmarks Covered | 17 | 16 |
| Pricing (input/output) | $2.00 / $6.00 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Grok 4.5 public-lane score: 57.2 (Supported · #29/119)
- Beam public-lane score: Coming soon

| Benchmark | Grok 4.5 | Beam | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 3.0 | 15.7% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 83.3% | 80.1% | Grok 4.5 |
| deepSwe | 53% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 67.8% | Coming soon | Coming soon |
| MCP Atlas | Coming soon | 78.7% | Coming soon |
| BrowseComp | Coming soon | 77.4% | Coming soon |
| DeepSearchQA | Coming soon | 80.1% | Coming soon |

### Coding

- Winner: Not comparable
- Grok 4.5 public-lane score: 57.5 (Supported · #25/144)
- Beam public-lane score: Coming soon

| Benchmark | Grok 4.5 | Beam | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 64.7% | 65.5% | Beam |
| SWE Multilingual | 78% | 78% | Tie |
| Terminal-Bench 2.1 | 83.3% | 80.1% | Grok 4.5 |
| CursorBench 3.2 | 66.7% | Coming soon | Coming soon |
| VulcanBench v3 | 89.9% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 87.4% | Coming soon | Coming soon |
| SWE-bench (Vals) | 86.6% | Coming soon | Coming soon |
| PostTrainBench v1.1 | 23.4% | Coming soon | Coming soon |
| DeepSWE | Coming soon | 44.4% | Coming soon |
| SWE-Atlas Codebase QnA | Coming soon | 34.6% | Coming soon |
| SWE-bench Verified | Coming soon | 80.9% | Coming soon |
| SciCode | Coming soon | 49.7% | Coming soon |

### Reasoning

- Winner: Not comparable
- Grok 4.5 public-lane score: 50.4 (#27/27)
- Beam public-lane score: Coming soon

| Benchmark | Grok 4.5 | Beam | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 52.6% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.3% | Coming soon | Coming soon |
| ARC-AGI-1 | 85.67% | Coming soon | Coming soon |
| LongBench v2 | Coming soon | 65.5% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Grok 4.5 public-lane score: 79.5 (Unranked · 1 rankable row)
- Beam public-lane score: Coming soon

### Knowledge

- Winner: Not comparable
- Grok 4.5 public-lane score: 67 (Supported · #20/171)
- Beam public-lane score: Coming soon

| Benchmark | Grok 4.5 | Beam | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 92.9% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 89.2% | Coming soon | Coming soon |
| GPQA-D | Coming soon | 90.5% | Coming soon |
| HLE w/o tools | Coming soon | 36.2% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Grok 4.5 public-lane score: Coming soon
- Beam public-lane score: Coming soon

| Benchmark | Grok 4.5 | Beam | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 79.7% | Coming soon |

### Mathematics

- Winner: Not comparable
- Grok 4.5 public-lane score: Coming soon
- Beam public-lane score: Coming soon

| Benchmark | Grok 4.5 | Beam | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | Coming soon | 97.8% | Coming soon |

## FAQ

### Which is better overall, Grok 4.5 or Beam?

Grok 4.5 is ahead overall on BenchLM right now.

### How many benchmarks does Grok 4.5 cover on BenchLM?

Grok 4.5 currently has 17 sourced benchmark scores on BenchLM.

### How many benchmarks does Beam cover on BenchLM?

Beam currently has 16 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Grok 4.5 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-grok-4-5)
- [Beam vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-reflection-beam)
- [Grok 4.5 vs GPT-6 Astra](/compare/gpt-6-astra-vs-grok-4-5)
- [Beam vs GPT-6 Astra](/compare/gpt-6-astra-vs-reflection-beam)

## Explore More

- [Grok 4.5 profile](/models/grok-4-5)
- [Beam profile](/models/reflection-beam)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)