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Beam 1.0 vs Llama 3.1 Nemotron Ultra 253B v1

Beam 1.0 leads the LLM Stats Score 44.6 to 18.7.

Reflection AI · NVIDIA · Updated for 2026

Which is better?

Beam 1.0 leads the overall LLM Stats Score 44.6 to 18.7, ranking #46 overall.

In the 2 individual benchmarks reported for both models, Beam 1.0 wins 2; this is a narrower head-to-head signal than the composite indexes.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Beam 1.0

  • overall performance matters — it scores 44.6 and ranks #46 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 2 of 2 exact shared results
  • you want the most recent training data — it shipped Oct 2026

Choose Llama 3.1 Nemotron Ultra 253B v1

  • you are already invested in the NVIDIA ecosystem

At a glance

The differences that matter most.

Beam 1.0
Reflection AI
Llama 3.1 Nemotron Ultra 253B v1
NVIDIA
Core performance indexes
LLM Stats Score
44.6
#46
18.7
#232
Reasoning
45.5
#37
18.4
#229
Coding
33.7
#39
12.2
#166
Cost, coverage & limits
Benchmark wins
2 of 2
0 of 2
Input price
$0.40 / M
— / M
Output price
$1.20 / M
— / M
Context window
1,048,576
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Beam 1.0
Llama 3.1 Nemotron Ultra 253B v1
Math
35.1#45
15.5#227
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

22 reported for Beam 1.0 · 6 for Llama 3.1 Nemotron Ultra 253B v1

2 shared

Beam 1.0 outperforms in 2 benchmarks (GPQA, LiveCodeBench), while Llama 3.1 Nemotron Ultra 253B v1 is better at 0 benchmarks.

Beam 1.0 significantly outperforms across most benchmarks.

Thu Oct 22 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

248.3B diff

Beam 1.0 has 248.3B more parameters than Llama 3.1 Nemotron Ultra 253B v1, making it 98.1% larger.

Reflection AI
Beam 1.0
501.3Bparameters
NVIDIA
Llama 3.1 Nemotron Ultra 253B v1
253.0Bparameters
501.3B
Beam 1.0
253.0B
Llama 3.1 Nemotron Ultra 253B v1

Context Window

Maximum input and output token capacity

Only Beam 1.0 specifies input context (1,048,576 tokens). Only Beam 1.0 specifies output context (131,072 tokens).

Reflection AI
Beam 1.0
Input1,048,576 tokens
Output131,072 tokens
NVIDIA
Llama 3.1 Nemotron Ultra 253B v1
Input- tokens
Output- tokens
Thu Oct 22 2026 • llm-stats.com

License

Usage and distribution terms

Beam 1.0 is licensed under Apache 2.0, while Llama 3.1 Nemotron Ultra 253B v1 uses Llama 3.1 Community License.

License differences may affect how you can use these models in commercial or open-source projects.

Beam 1.0

Apache 2.0

Open weights

Llama 3.1 Nemotron Ultra 253B v1

Llama 3.1 Community License

Open weights

Release Timeline

When each model was launched

Beam 1.0 was released on 2026-10-16, while Llama 3.1 Nemotron Ultra 253B v1 was released on 2025-04-07.

Beam 1.0 is 19 months newer than Llama 3.1 Nemotron Ultra 253B v1.

Beam 1.0

Oct 16, 2026

4 days ago

1.5yr newer
Llama 3.1 Nemotron Ultra 253B v1

Apr 7, 2025

1.5 years ago

Knowledge Cutoff

When training data ends

Beam 1.0 has a knowledge cutoff of 2026-06-30, while Llama 3.1 Nemotron Ultra 253B v1 has a cutoff of 2023-12-01.

Beam 1.0 has more recent training data (up to 2026-06-30), making it potentially better informed about events through that date compared to Llama 3.1 Nemotron Ultra 253B v1 (2023-12-01).

Beam 1.0

Jun 2026

2.5 yr newer
Llama 3.1 Nemotron Ultra 253B v1

Dec 2023

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Beam 1.0 and Llama 3.1 Nemotron Ultra 253B v1 side-by-side, then vote on the output you prefer.

Beam 1.0
✓ Preferred
Llama 3.1 Nemotron Ultra 253B v1
Open in Playground

FAQ

Common questions about Beam 1.0 vs Llama 3.1 Nemotron Ultra 253B v1.

Which is better, Beam 1.0 or Llama 3.1 Nemotron Ultra 253B v1?

Beam 1.0 leads the LLM Stats Score 44.6 to 18.7. Beam 1.0 is made by Reflection AI and Llama 3.1 Nemotron Ultra 253B v1 is made by NVIDIA. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Beam 1.0 compare to Llama 3.1 Nemotron Ultra 253B v1 in benchmarks?

Beam 1.0 scores AIME 2026: 97.7%, GPQA: 90.6%, LiveCodeBench: 88.3%, SWE-Bench Verified: 81.6%, MCP Atlas: 80.8%. Llama 3.1 Nemotron Ultra 253B v1 scores MATH-500: 97.0%, IFEval: 89.5%, GPQA: 76.0%, BFCL v2: 74.1%, AIME 2025: 72.5%.

What are the context window sizes for Beam 1.0 and Llama 3.1 Nemotron Ultra 253B v1?

Beam 1.0 supports 1.0M tokens and Llama 3.1 Nemotron Ultra 253B v1 supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Beam 1.0 and Llama 3.1 Nemotron Ultra 253B v1?

Key differences include LLM Stats Score (44.6 vs 18.7), licensing (Apache 2.0 vs Llama 3.1 Community License). See the full comparison above for benchmark-by-benchmark results.

Who makes Beam 1.0 and Llama 3.1 Nemotron Ultra 253B v1?

Beam 1.0 is developed by Reflection AI and Llama 3.1 Nemotron Ultra 253B v1 is developed by NVIDIA.

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