# Beam 1.0 501B-A23B NVFP4 vs Seed 2.1 Pro

> Side-by-side benchmark comparison for Beam 1.0 501B-A23B NVFP4 and Seed 2.1 Pro across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/reflection-beam-nvfp4-vs-seed-2-1-pro
- Last updated: October 16, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Beam 1.0 501B-A23B NVFP4 and Seed 2.1 Pro share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Beam 1.0 501B-A23B NVFP4 has the larger published context window at 1M.

## Model Snapshot

| Property | Beam 1.0 501B-A23B NVFP4 | Seed 2.1 Pro |
|----------|----------|----------|
| Creator | Reflection AI | ByteDance |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 256K |
| Independent public score (not head-to-head) | null | null |
| Benchmarks Covered | 19 | 11 |
| Pricing (input/output) | Pricing unavailable / Pricing unavailable | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Beam 1.0 501B-A23B NVFP4 public-lane score: Coming soon
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Beam 1.0 501B-A23B NVFP4 | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| τ³-bench results | 35.4% | Coming soon | Coming soon |
| HLE w/ tools | 51.1% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 78.4% | 71.0% | Beam 1.0 501B-A23B NVFP4 |
| MCP Atlas | 80.5% | Coming soon | Coming soon |
| BrowseComp | 75.6% | Coming soon | Coming soon |
| DeepSearchQA | 81.1% | Coming soon | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Beam 1.0 501B-A23B NVFP4 public-lane score: Coming soon
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Beam 1.0 501B-A23B NVFP4 | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| DeepSWE | 42.7% | Coming soon | Coming soon |
| SWE-bench Pro | 65.6% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 78.4% | 71.0% | Beam 1.0 501B-A23B NVFP4 |
| SWE-Atlas Codebase QnA | 31.4% | Coming soon | Coming soon |
| SWE Multilingual | 77.5% | Coming soon | Coming soon |
| SWE-bench Verified | 80.7% | Coming soon | Coming soon |
| SciCode | 46.9% | Coming soon | Coming soon |
| NL2Repo | Coming soon | 47% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Beam 1.0 501B-A23B NVFP4 public-lane score: 85.5 (Unranked · 3 rankable rows)
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Beam 1.0 501B-A23B NVFP4 | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| CritPt | 15.4% | Coming soon | Coming soon |
| LongBench v2 | 67.2% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Beam 1.0 501B-A23B NVFP4 public-lane score: Coming soon
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Beam 1.0 501B-A23B NVFP4 | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| MathVision | Coming soon | 92.6% | Coming soon |
| MMMU-Pro | Coming soon | 81.6% | Coming soon |
| ZeroBench | Coming soon | 18.0% | Coming soon |
| BabyVision | Coming soon | 73.7% | Coming soon |
| CharXiv | Coming soon | 85.4% | Coming soon |
| ERQA | Coming soon | 72.0% | Coming soon |
| Video-MME | Coming soon | 89.2% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Beam 1.0 501B-A23B NVFP4 public-lane score: Coming soon
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Beam 1.0 501B-A23B NVFP4 | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 89.3% | Coming soon | Coming soon |
| HLE w/o tools | 34.8% | Coming soon | Coming soon |
| SuperGPQA | Coming soon | 70.8% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Beam 1.0 501B-A23B NVFP4 public-lane score: 86.2 (#44/148)
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Beam 1.0 501B-A23B NVFP4 | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 79.2% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Beam 1.0 501B-A23B NVFP4 public-lane score: 87.9 (Unranked · 1 rankable row)
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Beam 1.0 501B-A23B NVFP4 | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 97.5% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between Beam 1.0 501B-A23B NVFP4 and Seed 2.1 Pro?

Not yet. The models share only 2 sourced benchmark rows, 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

- [Beam 1.0 501B-A23B NVFP4 vs Beam 1.0 501B-A23B](/compare/reflection-beam-vs-reflection-beam-nvfp4)
- [Seed 2.1 Pro vs Beam 1.0 501B-A23B](/compare/reflection-beam-vs-seed-2-1-pro)
- [Beam 1.0 501B-A23B NVFP4 vs Beam 1.0 501B-A23B FP8](/compare/reflection-beam-fp8-vs-reflection-beam-nvfp4)
- [Seed 2.1 Pro vs Beam 1.0 501B-A23B FP8](/compare/reflection-beam-fp8-vs-seed-2-1-pro)

## Explore More

- [Beam 1.0 501B-A23B NVFP4 profile](/models/reflection-beam-nvfp4)
- [Seed 2.1 Pro profile](/models/seed-2-1-pro)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)