LFM3-1.7B vs Llama 3.1 405B Instruct
LFM3-1.7B leads the LLM Stats Score 25.0 to 14.3.
Liquid AI · Meta · Updated for 2026
Which is better?
LFM3-1.7B leads the overall LLM Stats Score 25.0 to 14.3, ranking #192 overall.
In the 2 individual benchmarks reported for both models, LFM3-1.7B 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 LFM3-1.7B
- overall performance matters — it scores 25.0 and ranks #192 on LLM Stats
- your work emphasizes reasoning — 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 405B Instruct
- you want predictable pricing at $0.89/M input and $0.89/M output
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
20 reported for LFM3-1.7B · 18 for Llama 3.1 405B Instruct
LFM3-1.7B outperforms in 2 benchmarks (GPQA, IFEval), while Llama 3.1 405B Instruct is better at 0 benchmarks.
LFM3-1.7B significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Model Size
Parameter count comparison
Llama 3.1 405B Instruct has 403.3B more parameters than LFM3-1.7B, making it 23310.4% larger.
Context Window
Maximum input and output token capacity
Only Llama 3.1 405B Instruct specifies input context (128,000 tokens). Only Llama 3.1 405B Instruct specifies output context (128,000 tokens).
License
Usage and distribution terms
LFM3-1.7B is licensed under LFM Open License v1.0, while Llama 3.1 405B Instruct uses Llama 3.1 Community License.
License differences may affect how you can use these models in commercial or open-source projects.
LFM Open License v1.0
Open weights
Llama 3.1 Community License
Open weights
Release Timeline
When each model was launched
LFM3-1.7B was released on 2026-10-27, while Llama 3.1 405B Instruct was released on 2024-07-23.
LFM3-1.7B is 28 months newer than Llama 3.1 405B Instruct.
Oct 27, 2026
6 days ago
2.3yr newerJul 23, 2024
2.3 years ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Outputs Comparison
Judge for yourself.
Run your own prompts against LFM3-1.7B and Llama 3.1 405B Instruct side-by-side, then vote on the output you prefer.
FAQ
Common questions about LFM3-1.7B vs Llama 3.1 405B Instruct.