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Grok-4 Heavy vs LFM3-VL-2B

Grok-4 Heavy leads the LLM Stats Score 40.3 to 15.5.

xAI · Liquid AI · Updated for 2026

Which is better?

Grok-4 Heavy leads the overall LLM Stats Score 40.3 to 15.5, ranking #78 overall.

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

Choose Grok-4 Heavy

  • overall performance matters — it scores 40.3 and ranks #78 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes

Choose LFM3-VL-2B

  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Grok-4 Heavy
xAI
LFM3-VL-2B
Liquid AI
Core performance indexes
LLM Stats Score
40.3
#78
15.5
#265
Reasoning
38.6
#80
16.2
#252
Cost, coverage & limits
Benchmark wins
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Input price
— / M
— / M
Output price
— / M
— / M
Context window
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Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Grok-4 Heavy
LFM3-VL-2B
Math
41.7#10
19.0#187
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

6 reported for Grok-4 Heavy · 41 for LFM3-VL-2B

No common benchmarks found

Grok-4 Heavy and LFM3-VL-2Bdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Input capabilities

Documented input modalities across available providers

Both Grok-4 Heavy and LFM3-VL-2B support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Grok-4 Heavy

Text
Images
Audio
Video

LFM3-VL-2B

Text
Images
Audio
Video

License

Usage and distribution terms

Grok-4 Heavy is licensed under a proprietary license, while LFM3-VL-2B uses LFM Open License v1.0.

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

Grok-4 Heavy

Proprietary

Closed source

LFM3-VL-2B

LFM Open License v1.0

Open weights

Release Timeline

When each model was launched

LFM3-VL-2B was released on 2026-10-27, while Grok-4 Heavy's release date is not specified.

We can confirm LFM3-VL-2B's release timeline, but cannot make a direct age comparison without Grok-4 Heavy's release date.

Grok-4 Heavy

—

LFM3-VL-2B

Oct 27, 2026

1 weeks ago

Knowledge Cutoff

When training data ends

Grok-4 Heavy has a documented knowledge cutoff of 2024-12-31, while LFM3-VL-2B's cutoff date is not specified.

We can confirm Grok-4 Heavy's training data extends to 2024-12-31, but cannot make a direct comparison without LFM3-VL-2B's cutoff date.

Grok-4 Heavy

Dec 2024

LFM3-VL-2B

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Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Grok-4 Heavy and LFM3-VL-2B side-by-side, then vote on the output you prefer.

Grok-4 Heavy
✓ Preferred
LFM3-VL-2B
Open in Playground

FAQ

Common questions about Grok-4 Heavy vs LFM3-VL-2B.

Which is better, Grok-4 Heavy or LFM3-VL-2B?

Grok-4 Heavy leads the LLM Stats Score 40.3 to 15.5. Grok-4 Heavy is made by xAI and LFM3-VL-2B is made by Liquid AI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Grok-4 Heavy compare to LFM3-VL-2B in benchmarks?

Grok-4 Heavy scores AIME 2025: 100.0%, HMMT25: 96.7%, GPQA: 88.4%, LiveCodeBench: 79.4%, USAMO25: 61.9%. LFM3-VL-2B scores DocVQA: 96.7%, CountBench: 93.0%, ChartQA: 92.7%, RefCOCO-avg: 90.5%, POPE: 88.7%.

What are the main differences between Grok-4 Heavy and LFM3-VL-2B?

Key differences include LLM Stats Score (40.3 vs 15.5), licensing (Proprietary vs LFM Open License v1.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok-4 Heavy and LFM3-VL-2B?

Grok-4 Heavy is developed by xAI and LFM3-VL-2B is developed by Liquid AI.

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