Beam 1.0 vs Solar Pro 4

Beam 1.0 leads the LLM Stats Score 44.6 to 34.7. Solar Pro 4 is 1.1x cheaper per token.

Reflection AI · Upstage · Updated for 2026

Which is better?

Beam 1.0 leads the overall LLM Stats Score 44.6 to 34.7, ranking #46 overall.

In the 8 individual benchmarks reported for both models, Beam 1.0 wins 8; this is a narrower head-to-head signal than the composite indexes.

On price, Solar Pro 4 is roughly 1.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Beam 1.0 also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

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 8 of 8 exact shared results
you process long inputs — it offers a 1,048,576 token context window
you want the most recent training data — it shipped Oct 2026
you need open weights you can self-host or fine-tune

Choose Solar Pro 4

cost matters — it's about 1.1x cheaper per token

At a glance

The differences that matter most.

Better token value: Solar Pro 4

Core performance indexes

LLM Stats Score

44.6

#46 · 22 evals

Best

34.7

#112 · 9 evals

Reasoning

45.5

#37 · 19 evals

Best

34.4

#108 · 9 evals

Coding

33.7

#39 · 9 evals

Best

20.5

#114 · 3 evals

Agents

28.8

#53 · 9 evals

Best

11.5

#131 · 3 evals

Cost, coverage & limits

Benchmark wins

8 of 8

Best

0 of 8

Input price

$0.40 / M

$0.30 / M

Best

Output price

$1.20 / M

Context window

1,048,576

Best

524,288

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared

Index

Beam 1.0

Solar Pro 4

Math

35.1#45 · 5 evals

32.1#66 · 2 evals

Tool use

26.4#32 · 4 evals

9.5#150 · 2 evals

Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

22 reported for Beam 1.0 · 9 for Solar Pro 4

8 shared

Beam 1.0 outperforms in 8 benchmarks (AA-LCR, AIME 2026, BrowseComp, GPQA, LiveCodeBench, SWE-Bench Verified, Tau3 Banking, Terminal-Bench 2.1), while Solar Pro 4 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

Pricing Analysis

Price comparison per million tokens

Solar Pro 4 costs less

For input processing, Beam 1.0 ($0.40/1M tokens) is 1.3x more expensive than Solar Pro 4 ($0.30/1M tokens).

For output processing, Beam 1.0 ($1.20/1M tokens) costs the same as Solar Pro 4 ($1.20/1M tokens).

In conclusion, Beam 1.0 is more expensive than Solar Pro 4.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers

Thu Oct 22 2026 • llm-stats.com

Beam 1.0

Input tokens$0.40

Output tokens$1.20

Best providerTogether

Solar Pro 4

Input tokens$0.30

Output tokens$1.20

Best providerUnknown Organization

Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

Beam 1.0 accepts 1,048,576 input tokens compared to Solar Pro 4's 524,288 tokens. Both models can generate responses up to 131,072 tokens.

Beam 1.0

Input1,048,576 tokens

Output131,072 tokens

Solar Pro 4

Input524,288 tokens

Output131,072 tokens

Thu Oct 22 2026 • llm-stats.com

License

Usage and distribution terms

Beam 1.0 is licensed under Apache 2.0, while Solar Pro 4 uses a proprietary 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

Solar Pro 4

Proprietary

Closed source

Release Timeline

When each model was launched

Beam 1.0 was released on 2026-10-16, while Solar Pro 4 was released on 2026-08-06.

Beam 1.0 is 2 months newer than Solar Pro 4.

Beam 1.0

Oct 16, 2026

3 days ago

2mo newer

Solar Pro 4

Aug 6, 2026

2 months ago

Knowledge Cutoff

When training data ends

Beam 1.0 has a documented knowledge cutoff of 2026-06-30, while Solar Pro 4's cutoff date is not specified.

We can confirm Beam 1.0's training data extends to 2026-06-30, but cannot make a direct comparison without Solar Pro 4's cutoff date.

Beam 1.0

Jun 2026

Solar Pro 4

—

Provider Availability

Beam 1.0 is available from Together, Reflection AI. Solar Pro 4 is available from Upstage.

Beam 1.0

Together

Input Price:Input: $0.40/1MOutput Price:Output: $1.20/1M

Unknown Organization

Solar Pro 4

Unknown Organization

Input Price:Input: $0.30/1MOutput Price:Output: $1.20/1M

* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Beam 1.0 and Solar Pro 4 side-by-side, then vote on the output you prefer.

Beam 1.0

✓ Preferred

Solar Pro 4

Open in Playground

FAQ

Common questions about Beam 1.0 vs Solar Pro 4.

Which is better, Beam 1.0 or Solar Pro 4?

Beam 1.0 leads the LLM Stats Score 44.6 to 34.7. Beam 1.0 is made by Reflection AI and Solar Pro 4 is made by Upstage. 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 Solar Pro 4 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%. Solar Pro 4 scores AIME 2026: 95.3%, GPQA: 89.0%, LiveCodeBench: 87.8%, MMLU-Pro: 86.3%, AA-LCR: 71.0%.

Is Beam 1.0 cheaper than Solar Pro 4?

Solar Pro 4 is 1.3x cheaper for input tokens. Beam 1.0 costs $0.40/M input and $1.20/M output via together. Solar Pro 4 costs $0.30/M input and $1.20/M output via upstage.

What are the context window sizes for Beam 1.0 and Solar Pro 4?

Beam 1.0 supports 1.0M tokens and Solar Pro 4 supports 524K 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 Solar Pro 4?

Key differences include LLM Stats Score (44.6 vs 34.7), context window (1.0M vs 524K), input pricing ($0.40 vs $0.30/M), licensing (Apache 2.0 vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes Beam 1.0 and Solar Pro 4?

Beam 1.0 is developed by Reflection AI and Solar Pro 4 is developed by Upstage.

Beam 1.0 vs Solar Pro 4