Grok-4 Heavy vs LFM3-1.7B
Grok-4 Heavy leads the LLM Stats Score 40.3 to 25.0.
xAI · Liquid AI · Updated for 2026
Which is better?
Grok-4 Heavy leads the overall LLM Stats Score 40.3 to 25.0, ranking #78 overall.
In the 2 individual benchmarks reported for both models, Grok-4 Heavy 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 Grok-4 Heavy
- overall performance matters — it scores 40.3 and ranks #78 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
Choose LFM3-1.7B
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
6 reported for Grok-4 Heavy · 20 for LFM3-1.7B
Grok-4 Heavy outperforms in 2 benchmarks (GPQA, Humanity's Last Exam), while LFM3-1.7B is better at 0 benchmarks.
Grok-4 Heavy significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Input capabilities
Documented input modalities across available providers
Grok-4 Heavy supports multimodal inputs, whereas LFM3-1.7B does not.
Grok-4 Heavy can handle both text and other forms of data like images, making it suitable for multimodal applications.
Grok-4 Heavy
LFM3-1.7B
License
Usage and distribution terms
Grok-4 Heavy is licensed under a proprietary license, while LFM3-1.7B uses LFM Open License v1.0.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
LFM Open License v1.0
Open weights
Release Timeline
When each model was launched
LFM3-1.7B was released on 2026-10-27, while Grok-4 Heavy's release date is not specified.
We can confirm LFM3-1.7B's release timeline, but cannot make a direct age comparison without Grok-4 Heavy's release date.
—
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 LFM3-1.7B'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 LFM3-1.7B's cutoff date.
Dec 2024
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Outputs Comparison
Judge for yourself.
Run your own prompts against Grok-4 Heavy and LFM3-1.7B side-by-side, then vote on the output you prefer.
FAQ
Common questions about Grok-4 Heavy vs LFM3-1.7B.