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LFM2.5-VL-3B vs Solar Pro 4

Comparing LFM2.5-VL-3B and Solar Pro 4 across benchmarks, pricing, and capabilities.

Liquid AI · Upstage · Updated for 2026

Which is better?

LFM2.5-VL-3B and Solar Pro 4 trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.

Based on current benchmark, pricing, and model metadata for 2026.

Choose LFM2.5-VL-3B

  • you want the most recent training data — it shipped Aug 2026
  • you need open weights you can self-host or fine-tune

Choose Solar Pro 4

  • you want predictable pricing at $0.30/M input and $1.20/M output

At a glance

The differences that matter most.

LFM2.5-VL-3B
Liquid AI
Solar Pro 4
Upstage
Benchmark wins
—
—
Input price
— / M
$0.30 / M
Output price
— / M
$1.20 / M
Context window
—
524,288
Released
Aug 2026
Aug 2026
License
LFM Open License v1.0
Proprietary

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

LFM2.5-VL-3B and Solar Pro 4don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Playground indexes and blind preference scores

Context Window

Maximum input and output token capacity

Only Solar Pro 4 specifies input context (524,288 tokens). Only Solar Pro 4 specifies output context (131,072 tokens).

Liquid AI
LFM2.5-VL-3B
Input- tokens
Output- tokens
Upstage
Solar Pro 4
Input524,288 tokens
Output131,072 tokens
Tue Aug 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

LFM2.5-VL-3B supports multimodal inputs, whereas Solar Pro 4 does not.

LFM2.5-VL-3B can handle both text and other forms of data like images, making it suitable for multimodal applications.

LFM2.5-VL-3B

Text
Images
Audio
Video

Solar Pro 4

Text
Images
Audio
Video

License

Usage and distribution terms

LFM2.5-VL-3B is licensed under LFM Open License v1.0, while Solar Pro 4 uses a proprietary license.

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

LFM2.5-VL-3B

LFM Open License v1.0

Open weights

Solar Pro 4

Proprietary

Closed source

Release Timeline

When each model was launched

LFM2.5-VL-3B was released on 2026-08-12, while Solar Pro 4 was released on 2026-08-06.

LFM2.5-VL-3B is 0 month newer than Solar Pro 4.

LFM2.5-VL-3B

Aug 12, 2026

1 weeks ago

6d newer
Solar Pro 4

Aug 6, 2026

2 weeks ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against LFM2.5-VL-3B and Solar Pro 4 side-by-side, then vote on the output you prefer.

LFM2.5-VL-3B
✓ Preferred
Solar Pro 4
Open in Playground

FAQ

Common questions about LFM2.5-VL-3B vs Solar Pro 4.

Which is better, LFM2.5-VL-3B or Solar Pro 4?

LFM2.5-VL-3B (Liquid AI) and Solar Pro 4 (Upstage) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does LFM2.5-VL-3B compare to Solar Pro 4 in benchmarks?

LFM2.5-VL-3B scores DocVQA: 91.1%, POPE: 88.7%, RefCOCO-avg: 87.9%, TextVQA: 84.3%, OCRBench: 84.2%. Solar Pro 4 scores AIME 2026: 95.3%, GPQA: 89.0%, LiveCodeBench: 87.8%, MMLU-Pro: 86.3%, AA-LCR: 71.0%.

What are the context window sizes for LFM2.5-VL-3B and Solar Pro 4?

LFM2.5-VL-3B supports an unknown number of 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 LFM2.5-VL-3B and Solar Pro 4?

Key differences include multimodal support (yes vs no), licensing (LFM Open License v1.0 vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes LFM2.5-VL-3B and Solar Pro 4?

LFM2.5-VL-3B is developed by Liquid AI and Solar Pro 4 is developed by Upstage.

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